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Edition: June 2005
Revision: July 2006
Publication No. SM6E-1V42U1
QUICK REFERENCE INDEX
A
GENERAL INFORMATION
B ENGINE
C
TRANSMISSION/
TRANSAXLE
D DRIVELINE/AXLE
E SUSPENSION
F BRAKES
G STEERING
H RESTRAINTS
I BODY
J AIR CONDITIONER
K ELECTRICAL
L MAINTENANCE
M INDEX
GI
General Information
EM
Engine Mechanical
LU
Engine Lubrication System
CO
Engine Cooling System
EC
Engine Control System
FL
Fuel System
EX
Exhaust System
ACC
Accelerator Control System
AT
Automatic Transaxle
FAX
Front Axle
RAX
Rear Axle
FSU
Front Suspension
RSU
Rear Suspension
WT
Road Wheels & Tires
BR
Brake System
PB
Parking Brake System
BRC
Brake Control System
PS
Power Steering System
SB
Seat Belts
SRS
Supplemental Restraint System (SRS)
BL
Body, Lock & Security System
GW
Glasses, Window System & Mirrors
RF
Roof
EI
Exterior & Interior
IP
Instrument Panel
SE
Seat
AP
Adjustable Pedal
ATC
Automatic Air Conditioner
MTC
Manual Air Conditioner
SC
Starting & Charging System
LT
Lighting System
DI
Driver Information System
WW
Wiper, Washer & Horn
BCS
Body Control System
LAN
LAN System
AV
Audio Visual, Navigation & Telephone System
ACS
Auto Cruise Control System
PG
Power Supply, Ground & Circuit Elements
MA
Maintenance
IDX
Alphabetical Index
A
B
C
D
E
F
G
H
I
J
K
L
M
© 2006 NISSAN NORTH AMERICA, INC.
All rights reserved. No p a rt of this Se rvice Man ual may be reproduc ed or sto re d in a retrie val system, or tran smitted in any
form, or by any means, electronic, mecha nical, photo-co pying, recording or oth erwise, without the prio r written permissi on
of Nissan North America, Inc.
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This manual contains maintenance and repair procedures for the
2006 NISSAN QUEST.
In order to assure your safety and the efficient functioning of the vehicle,
this manual should be read thoroughly. It is especially important that the
PRECAUTIONS in the GI section be completely understood before starting
any repair task.
All information in this manual is based on the latest product information
at the time of publication. The right is reserved to make changes in specifications and methods at any time without notice.
IMPORTANT SAFETY NOTICE
The proper performance of service is essential for both the safety of
the technician and the efficient functioning of the vehicle.
The service methods in this Service Manual are described in such a
manner that the service may be performed safely and accurately.
Service varies with the procedures used, the skills of the technician
and the tools and parts available. Accordingly, anyone using service
procedures, tools or parts which are not specifically recommended
by NISSAN must first be completely satisfied that neither personal
safety nor the vehicle’s safety will be jeopardized by the service
method selected.
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PLEASE HELP MAKE THIS SERVICE MANUAL BETTER!
Your comments are important to NISSAN and will help us to improve our Service Manuals.
Use this form to report any issues or comments you may have regarding our Service Manuals.
Please print this form and type or write your comments below. Mail or fax to:
Nissan North America, Inc.
Technical Service Information
39001 Sunrise Drive, P.O. Box 9200
Farmington Hills, MI USA 48331
FAX: (248) 488-3910
SERVICE MANUAL: Model: Year:
PUBLICATION NO. (Refer to Quick Reference Index ):
Please describe any Service Manual issues or problems in detail:
Page number(s)
Note: Please include a copy of each page, marked with your comments.
Are the trouble diagnosis procedures logical and easy to use? (circle your answer) YES NO
If no, what page number(s)?
Please describe the issue or problem in detail:
Is the organization of the manual clear and easy to follow? (circle your answer) YES NO
Please comment:
What information should be included in NISSAN Service Manuals to better support you in servicing or
repairing customer vehicles?
Note: Please include a copy of each page, marked with your comments.
DATE: YOUR NAME: POSITION:
DEALER: DEALER NO.: ADDRESS:
CITY: STATE/PROV./COUNTRY: ZIP/POSTAL CODE:
Page 4
QUICK REFERENCE CHART: QUEST
2006
QUICK REFERENCE CHART: QUEST PFP:00000
Engine Tune-Up Data
Cylinder arrangement V-6
Displacement
Bore and stroke 95.5 x 81.4 mm (3.760 x 3.205 in)
Valve arrangement DOHC
Firing order 1-2-3-4-5-6
Number of piston rings
Number of main bearings 4
Compression ratio 10.0:1
Compression pressure
Compression 2
Oil 1
Standard
Minimum
Differential limit
between cylinders
981 kPa (10.0 kg/cm
3,498 cm
1,275 kPa (13.0 kg/cm
98 kPa (1.0 kg/cm
3
(213.45 in3 )
2
, 185 psi) / 300
rpm
2
, 142 psi) / 300 rpm
2
, 14 psi) / 300 rpm
ELS001P9
Cylinder number
SEM713A
Valve timing (IVTC - OFF)
PBIC0187E
abcdef
240° 238° - 6° 64° 8° 52°
Unit: degree
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QUICK REFERENCE CHART: QUEST
Drive Belt Deflection and Tension
2006
1. Power steering oil pump 2. Idler pulley 3. Pow er steer in g oil pump
4. Crankshaft pulley 5. Air conditioner compressor 6. Gen e ra to r
Deflection adjustment Unit: mm (in) Tension adjustment* Unit: N (kg-f, lb-f)
Used belt
Limit After adjustment Limit After adjustment
Generator and
air conditioner
compressor
Power steering
oil pump
Applied pushing
force
*: If belt tension gauge cannot be installed at check points shown , che ck dr iv e belt tensi on at different locat ion on th e bel t.
7 (0.28)
11 (0.43)
98 N (10 kg-f, 22 lb-f) —
4.2 - 4.6
(0.17 - 0.18)
7.3 - 8.0
(0.29 - 0.30)
New belt
3.7 - 4.1
(0.15 - 0.16)
6.5 - 7.2
(0.26 - 0.28)
294 (30, 66)
196 (20, 44)
Used belt
730 - 818
(74.5 - 83.5,
164 - 184)
495 - 583
(50.5 - 59.5,
111 - 131)
Spark Plugs (Double Platinum Tipped)
Make NGK
Standard type PLFR5A-11
Hot type PLFR4A-11
Cold type PLFR6A-11
Gap (nominal) 1.1 mm (0.043 in)
WBIA0385E
New belt
838 - 926
(85.5 - 94.5,
188 - 208)
603 - 691
(61.5 - 70.5,
135.6 - 155.4)
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QUICK REFERENCE CHART: QUEST
2006
Front Wheel Alignmen t (Unladen*1)
Market United States
and Canada
Camber
degree minute (decimal degree)
Caster
degree minute (decimal degree)
Kingpin inclination
degree minute (decimal degree)
Minimum −1°15′ (−1.25°) −0°4′ (−0.07°)
Nominal −0°30′ (−0.50°) −0°4′ (−0.07°)
Maximum 0°15′ (0.25°)0°41′ (0.68°)
Left and right difference
Minimum 1°57′ (1.95°)2°27′ (2.45°)
Nominal 2°42′ (2.70°)2°27′ (2.45°)
Maximum 3°27′ (3.45°)3°12′ (3.20°)
Left and right difference
Minimum 13°39′ (13.65°)13°42′ (13.70°)
Nominal 14°24′ (14.40°)13°42′ (13.70°)
Maximum 15°09′ (15.15°)14°27′ (14.45°)
0°45′ (0.75°) or
less
0°45′ (0.75°) or
less
ELS001PA
Mexico
0°45′ (0.75°) or
less
0°45′ (0.75°) or
less
SFA234AC
Total toe-in
Distance (A − B)
mm (in)
Angle (left plus right)
degree minute (decimal degree)
Wheel turning angle
full turn*2
*1: Fuel, engine coolant and engine oil full. Spare tire, jack, hand tools and mats in designat ed positions.
*2: On power steering models, wheel tu rning fo rce (at circ umferenc e of steer ing wheel ) of 98 to 147 N (10 t o 15 kg-f, 22 to 33 lb-f) with
engine idle.
Inside
degree minute (decimal degree)
Outside
degree minute (decimal degree)
Minimum −0.75 (−0.0295) −0.75 (−0.0295)
Nominal 0.25 (0.0098) 0.25 (0.0098)
Maximum 1.25 (0.0492) 1.25 (0.0492)
Minimum 0° 3′ 30″ (0.06°)0° 3′ 30″ (0.06°)
Nominal 0° 6′ (0.10°)0° 6′ (0.10°)
Maximum 0° 8′ 30″ (0.14°)0° 8′ 30″ (0.14°)
Minimum 35°15′ (35.25°)35°15′ (35.25°)
Nominal 38°45′ (38.75°)38°45′ (38.75°)
Maximum 39°45′ (39.75°)39°45′ (39.75°)
Nominal 32°30′ (32.5°)32°30′ (32.5°)
Page 7
QUICK REFERENCE CHART: QUEST
2006
Rear Wheel Alignment (Unladen*)
Market
Minimum −1° 3' (−1.05°)0° 3' (0.05°)
Camber
Degree minute (Decimal degree)
SFA234AC
Distance (“A” − “B”)
mm (in)
Total toe-in
Angle (left plus right)
Degree minute (Decimal degree)
*: Fuel, engine coolant, and engine oil are full. Spare tire, jack, han d too ls and mats in designated positions.
Difference between LH, RH
Nominal −0° 33′ (−0.55°)0° 33′ (0.55°)
Maximum -0° 3′ (-0.05°)1° 3′ (1.05°)
Minimum 1.6 (0.063) 1.6 (0.063)
Nominal 3.2 (0.126) 3.2 (0.126)
Maximum 4.8 (0.189) 4.8 (0.189)
Minimum -2.0 (-0.079) -2.0 (-0.079)
Nominal 0 (0) 0 (0)
Maximum 2.0 (0.079) 2.0 (0.079)
Minimum 0° 3′ 35" (0.06°)0° 3′ 35" (0.06°)
Nominal 0° 7′ 48" (0.13°)0° 7′ 48" (0.13°)
Maximum 0° 12′ 0" (0.20°)0° 12′ 0" (0.20°)
United States
and Canada
ELS001PB
Mexico
Brake
Brake model AD35VB disc brake
Front brake
Rear brake
Master cylinder Cylinder bore diameter 25.4 (1.00)
Brake booster
Recommended brake fluid
Disc Brake - Repair Limits
Brake model AD35VB (Front) AD14VE (Rear)
Pad wear limit Minimum thickness 2.0 (0.079) 2.0 (0.079)
Cylinder bore diameter 47.62 (1.87)
Pad Length × width × thickness 132.0 × 53.5 × 10.0 (5.20 × 2.11 × 0.39)
Rotor outer diameter × thickness 290 × 28 (11.42 × 1.10)
Brake model AD14VE disc brake
Cylinder bore diameter 42.86 (1.69)
Pad Length × width × thickness 83.0 × 33.0 × 8. 5 (3.27 × 1.30 × 0.33)
Rotor outer diameter × thickness 308 × 16 (12.13 × 0.63)
Booster model M245T
Diaphragm diameter
Primary 252 (9.92)
Secondary 230 (9.06)
Genuine NISSAN Super Heavy Duty Brake Fluid
or equivalent, DOT 3 (US FMVSS No. 116)
ELS001PC
Unit: mm (in)
Unit: mm (in)
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QUICK REFERENCE CHART: QUEST
Brake model AD35VB (Front) AD 14VE (Re ar)
Maximum runout 0.04 (0.0016) 0.05 (0.0020)
Rotor repair limit
Brake Pedal
Minimum thickness 26.0 (1.02) 14.0 (0.5 5)
Maximum thickness variation
(measured at 8 positions)
0.015 (0.0006) or less
2006
Unit: mm (in)
WFIA0160E
Free height “H” * 156.3 - 166.3 (6.15 - 6.55)
Depressed pedal height “D” [under a force of 490 N (50 kg-f, 110 lb-f) with engine running * more than 90.3 (3.55)
1
Clearance “C
ASCD switch
Pedal play “A” 3 - 11 (0.12 - 0.43)
*: Measured from surface of dash reinforce me nt panel to surface of pedal pad
” or “C2 ” between pedal stopper and threaded end of stop lamp sw it ch or
0.74 - 1.96 (0.029 - 0.077)
Refill Capacities
Description
Fuel
Engine oil
Drain and refill
Dry engine (engine overhaul)
Cooling system With reservoir at “MAX” level
Automatic transaxle fluid (ATF)
Power steering fl uid (PSF)
Windshield washer fluid
With oil filter change
Without oil filter change
4 A/T
5 A/T
Metric US measure Imp measure
75.6
4.0
3.7
5.0
10.5
8.9
7.4
1.0
4.5
Capacity (approximate)
20 gal 16 5/8 gal
4 1/4 qt 3 1/2 qt
3 7/8 qt 3 1/4 qt
5 1/4 qt 4 3/8 qt
2 3/4 gal 2 3/8 gal
9 3/8 qt 7 7/8 qt
7 7/8 qt 6 1/2 qt
2 1/8 pt 1 3/4 pt
1 1/4 gal 1 gal
ELS001PD
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QUICK REFERENCE CHART: QUEST
2006
Description
Air conditioning system refrigerant 900 ± 50 g 1.98 ± 0.11 lb 1.98 ± 0.11 lb
Air conditioning system oil
Metric US measure Imp measure
220 m
Capacity (approximate)
7.44 fl oz 7.7 fl oz
Page 10
B ENGINE
A
ACC
SECTION
ACCELERATOR CONTROL SYSTEM
CONTENTS
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
ACCELERATOR CONTROL SYSTEM .......................3
Removal and Installation .......................................... 3
ADJUSTABLE PEDAL ........................................... 3
NON-ADJUSTABLE PEDAL ..................................4
ADJUSTABLE PEDAL ELECTRIC MOTOR .......... 5
SERVICE DATA AND SPECIFICATIONS (SDS) ........ 6
Accelerator Control ...................................................6
PEDAL TRAVEL .................................................... 6
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PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEA T
BELT PRE-TENSIONER”
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front sea t belt , helps t o redu ce th e r isk or s everi ty of injury to th e driv er an d front passenge r for c ertain
types of collisi on . Thi s s ys te m in cludes seat belt swi tch inp uts an d du al stage front air bag modul es . The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information ne ce ss ary t o se rvi ce th e sy stem saf e ly is i nclu de d in th e SR S and SB se ct i on of th is Ser vic e Manual.
WARNING:
● To avoid rendering the SRS inoperative, which could inc rease the ris k of personal inju ry or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer.
● Improper maintenance, including i ncorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For rem ova l of Sp iral Ca ble an d Air
Bag Module, see the SRS section.
● Do not use electrical test equipment on any circuit relate d to the SRS unless instructed to in t his
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors .
EBS00QUS
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ACCELERATOR CONTROL SYSTEM
ACCELERATOR CONTROL SYSTEM PFP:18005
Removal and Installation
Adjustable and Non-adjustable Accelerator Pedal
EBS00QAJ
A
ACC
C
D
E
F
G
LBIA0372E
1. Adjustable pedal electric motor 2. Adjustable accelerator pedal 3. Accelerator position sensor (adjustable pedal)
4. Accelerator position sensor (non-
adjustable pedal)
5. Non-adjustable accelerator pedal
CAUTION:
● Before removal and installation the accelera tor and brake pedals must be in the front mos t posi-
tion. This is to align the base position of the accelerator and brake pedals (adjustable type only).
● Do not disassemble the accelerator pedal assembly.
● Do not remove the accelerator pedal position sensor from the accelerator pedal bracket.
● Do not disassemble the accelerator pedal adjusting mechanism (adjustable type only).
● Avoid damage from dropping the accelerator pedal assembly during handling.
● Keep the accelerator pedal assembly away from water.
ADJUSTABLE PEDAL
Removal
1. Move the accelerator and brake pedals to the frontmost position.
2. Turn the ignition switch OFF and disconnect the negative battery terminal.
3. Remove the heater and cooling unit assembly. Refer to ATC-151, "FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
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ACCELERATOR CONTROL SYSTEM
4. Disconnect t he adjustable brake pedal cable from the adjustable
pedal electric motor.
● Unlock (1) then pull (2) the adjustable brake pedal cable end
to disconnect it from the adjustable pedal electric motor as
shown.
● When unlocking the cable end, do not spread open the lock
tabs more than is necessary to release the cable end.
5. Disconnect the adjustable pedal electric motor electrical connector.
6. Disconnect the accelerator position sensor electrical connector.
7. Remove the upper and lower accelerator pedal nuts.
8. Remove the adjustable accelerator pedal assembly.
CAUTION:
● Do not disassemble the pedal as sembly. Do not remove the accelerator pe dal position sensor
from the pedal brack e t.
● Avoid damage from dropping the accelerator pedal assemb ly during handling.
● Keep the accelerator pedal assembly away from water.
9. Disconnect the adjustable accelerator pedal cable from the
adjustable accelerator pedal.
● Unlock (1) then pull (2) the adjustable accelerator pedal cable
end to disconnec t it from the adjustable ac celerator pedal as
shown.
● When unlocking the cable end, do not spread open the lock
tabs more than is necessary to release the cable end.
NOTE:
The rear view of the adjustable accelerator pedal is show n for
clarity.
LBIA0374E
LBIA0373E
10. Remove the adjustable pedal electric motor from the adjustable accelerator pedal bracket.
Installation
Installation is in the reverse order of removal.
● Check the accelerator pedal for smooth operation. There should be no binding or sticking when applying
or releasing the accelerato r peda l.
● Chec k the accelerator pedal adjustable feature for smooth operation. There should be no binding or stick-
ing when adjusting the accelerator pedal forward or backward.
● Check that the cable end is locked securely onto th e adjustable pedal electric motor.
CAUTION:
Whenever the harness connector of the accelerator pedal position sensor has been disconnected,
perform the “Accelerator Pedal Released Position Learning”. Refer to EC-82, "
Accelerator Pedal
Released Position Learn ing" .
NON-ADJUSTABLE PEDAL
Removal
1. Disconnect the accelerator position sensor electrical connector.
2. Remove the upper and lower accelerator pedal nuts.
3. Remove the accel erator pedal assembly.
CAUTION:
● Do not disassemble the pedal as sembly. Do not remove the accelerator pe dal position sensor
from the pedal brack e t.
● Avoid damage from dropping the accelerator pedal assemb ly during handling.
● Keep the accelerator pedal assembly away from water.
Installation
Installation is in the reverse order of removal.
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ACCELERATOR CONTROL SYSTEM
● Check the accelerator pedal for smooth operation. There should be no binding or sticking when applying
or releasing the accelerator pedal.
CAUTION:
Whenever the harness connector of the accelerator pedal position sensor has been disconnected,
perform the “Accelerator Pedal Released Position Learning”. Refer to EC-82, "
Released Position Learning" .
ADJUSTABLE PEDAL ELECTRIC MOTOR
Removal
1. Move the accelerator and brake pedals to the frontmost position.
2. Turn the ignition switch OFF and disconnect the negative battery terminal.
3. Disconnect the adjustable brake pedal cable from the adjustable
pedal electric motor.
● Unlock (1) then pull (2) the adjustable brake pedal cable end
to disconnect it from the adjustable pedal electric motor as
shown.
● When unlocking the ca ble end, do not spread open the lock
tabs more than is necessary to release the cable end.
4. Disconnect the a djus t able peda l elec tri c mot or el ectr ica l con nector.
Accelerator Pedal
LBIA0374E
A
ACC
C
D
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5. Disconnect the adjustable accelerator pedal cable from the
adjustable accelerator pedal.
● Unlock (1) then pull (2) the adjustable accelerator pedal cable
end to disconnect it from the adjustable ac celerator pedal as
shown.
● When unlocking the ca ble end, do not spread open the lock
tabs more than is necessary to release the cable end.
NOTE:
The rear view of the adjustable accelerator pedal is shown for
clarity.
LBIA0373E
6. Remove the adjustable pedal electric motor from the adjustable accelerator pedal bracket.
CAUTION:
● Do not disassemble the adjustable pedal electric motor.
● Avoid damage from dropping the adjustable pedal electric motor during handling.
● Keep the adjustable pedal electric motor away from water.
Installation
Installation is in the reverse order of removal.
● Check th e accelerator pedal adjustable fea ture for smooth operation. There shou ld be no bind ing or stick-
ing when adjus ting the accele rator pedal f orward or backward.
● Check that the cable end is locked securely onto the adjustable pe dal electric motor.
CAUTION:
Whenever the harness connector of the accelerator pedal position sensor has been disconnected,
perform the “Accelerator Pedal Released Position Learning”. Refer to EC-82, "
Released Position Learning" .
Accelerator Pedal
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS) PFP:00030
Accelerator Control
PEDAL TRAVEL
Accelerator control pedal - total travel 73.2 mm (2.88 in)
EBS00QAK
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K ELECTRICAL
A
B
SECTION
AUTO CRUISE CONTROL SYSTEM
CONTENTS
AUTOMA TIC SPEED CONTROL DEVICE (ASCD) ..... 2
Description ............................................................... 2
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) PFP:18930
Description
Regarding the information for ASCD system, refer to EC-31, "AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" .
EKS00FOM
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C TRANSMISSION/TRANSAXLE
A
B
SECTION
CONTENTS
RE4F04B
TROUBLE DIAGNOSIS - INDEX ................................ 8
Alphabetical & P No. Index for DTC ......................... 8
PRECAUTIONS ........................................................ 10
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 10
Precautions for On Board Diagnostic (OBD) System
of A/T and Engine .................................................. 10
Precautions ............................................................ 10
Service Notice or Precautions ................................ 12
PREPARATIO N ................. .................... .................... 14
Special Service Tools ............................................. 14
Commercial Service Tools ...................................... 16
A/T FLUID ................................................................. 18
Changing A/T Fluid .. ...... ....... ...... ....... .................... 18
Checking A/T Fluid ................................................. 18
A/T Fluid Cooler Cleaning ...................................... 19
OVERALL SYSTEM ................................................. 22
A/T Electrical Parts Location .................................. 22
Circuit Diagram ...................................................... 23
Cross-sectional View .............................................. 24
Hydraulic Control Circuit ........................................ 25
Shift Mechanism ..................................................... 26
Control System ... ...... ...... ....... ...... ....... ...... ....... ....... 34
CAN Communication .............................................. 35
Control Mechanism ............... ...... ....... ...... ....... ....... 36
Control Valve ............ ...... ....... ...... ........................... 41
ON BOARD DIAGNOSTIC SYSTEM DESCRIP-
TION ............................ .......................... .................... 42
Introduction ............................................................ 42
OBD-II Function for A/T System ............................. 42
One or Two Trip Detection Logic of OBD-II ............ 42
OBD-II Diagnostic Trouble Code (DTC) ................. 42
Malfunction Indicator Lamp (MIL) ........................... 46
CONSULT-II Function (A/T) ................................... 46
Diagnostic Procedure Without CONSULT-II ........... 58
TROUBLE DIAGNOSIS - INTRODUCTION ............. 63
Introduction ............................................................ 63
Work Flow .............................................................. 67
AUTOMATIC TRANSAXLE
TROUBLE DIAGNOSIS - BASIC INSPECTION .......69
A/T Fluid Check ...................................................... 69
A/T Fluid Cooler Cleaning ......................................69
Stall Test .................................................................70
Line Pressure Test .................................................. 73
Road Test ............................................................... 74
TROUBLE DIAGNOSIS - GENERAL DESCRIP-
TION ..........................................................................88
Symptom Chart .......................................................88
TCM Terminals and Reference Value ..................... 97
TROUBLE DIAGNOSIS FOR POWER SUPPLY ....101
Wiring Diagram — AT — MAIN ............................101
Diagnostic Procedure ...........................................102
DTC U1000 CAN COMMUNICATION LINE ............104
Description ................... ...... ....... ...... ......................104
On Board Diagnosis Logic ....................................104
Possible Cause .....................................................104
DTC Confirmation Procedure ...............................104
Wiring Diagram — AT — CAN ..............................105
Diagnostic Procedure ...........................................106
DTC P0705 P ARK/NEUTRAL POSITION SWITCH .107
Description ................... ...... ....... ...... ......................107
On Board Diagnosis Logic ....................................107
Possible Cause .....................................................107
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure .......................... ...... ....... ...... ....... ...... ....... ..107
Wiring Diagram — AT — PNP/SW .......................109
Diagnostic Procedure ...........................................110
DTC P0710 A/T FLUID TEMPERATURE SENSOR
CIRCUIT ..................................................................113
Description ................... ...... ....... ...... ......................113
On Board Diagnosis Logic ....................................113
Possible Cause .....................................................113
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure .......................... ...... ....... ...... ....... ...... ....... ..113
Wiring Diagram — AT — FTS ..............................115
Diagnostic Procedure ...........................................116
DTC P0720 VEHICLE SPEED SENSOR·A/T (REV-
OLUTION SENSOR) ...............................................119
Description ................... ...... ....... ...... ......................119
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On Board Diagnosis Logic ....................................119
Possible Cause .....................................................119
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ....................... .......................... ..................119
Wiring Diagram — AT — VSSA/T .........................121
Diagnostic Procedure ...........................................122
DTC P0725 ENGINE SPEED SIGNAL ...................124
Description ................ .......................... ..................124
On Board Diagnosis Logic ....................................124
Possible Cause .....................................................124
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ....................... .......................... ..................124
Wiring Diagram — AT — ENGSS .........................125
Diagnostic Procedure ...........................................126
DTC P0731 A/T 1ST GEAR FUNCTION .................128
Description ................ .......................... ..................128
On Board Diagnosis Logic ....................................128
Possible Cause .....................................................128
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ....................... .......................... ..................128
Wiring Diagram — AT — 1ST ...............................130
Diagnostic Procedure ...........................................131
DTC P0732 A/T 2ND GEAR FUNCTION ................133
Description ................ .......................... ..................133
On Board Diagnosis Logic ....................................133
Possible Cause .....................................................133
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ....................... .......................... ..................133
Wiring Diagram — AT — 2ND ..............................135
Diagnostic Procedure ...........................................136
DTC P0733 A/T 3RD GEAR FUNCTION ................138
Description ................ .......................... ..................138
On Board Diagnosis Logic ....................................138
Possible Cause .....................................................138
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ....................... .......................... ..................138
Wiring Diagram — AT — 3RD ..............................140
Diagnostic Procedure ...........................................141
DTC P0734 A/T 4TH GEAR FUNCTION ................143
Description ................ .......................... ..................143
On Board Diagnosis Logic ....................................143
Possible Cause .....................................................143
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ....................... .......................... ..................143
Wiring Diagram — AT — 4TH ...............................145
Diagnostic Procedure ...........................................146
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE ............................... ...... ....... .....150
Description ................ .......................... ..................150
On Board Diagnosis Logic ....................................150
Possible Cause .....................................................150
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ....................... .......................... ..................150
Wiring Diagram — AT — TCV ..............................152
Diagnostic Procedure ...........................................153
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) .155
Description ................ .......................... ..................155
On Board Diagnosis Logic ....................................155
Possible Cause .....................................................155
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ...................................................................155
Wiring Diagram — AT — TCCSIG ........................157
Diagnostic Procedure ............................................158
DTC P0745 LINE PRESSURE SOLENOID VALVE .163
Description ............................................................163
On Board Diagnosis Logic ....................................163
Possible Cause .....................................................163
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ...................................................................163
Wiring Diagram — AT — LPSV ............................165
Diagnostic Procedure ............................................166
DTC P0750 SHIFT SOLENOID VALVE A ...............169
Description ............................................................169
On Board Diagnosis Logic ....................................169
Possible Cause .....................................................169
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ...................................................................169
Wiring Diagram — AT — SSV/A ...........................171
Diagnostic Procedure ............................................172
DTC P0755 SHIFT SOLENOID VALVE B ...............174
Description ............................................................174
On Board Diagnosis Logic ....................................174
Possible Cause .....................................................174
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ...................................................................174
Wiring Diagram — AT — SSV/B ...........................176
Diagnostic Procedure ............................................177
DTC P1705 THROTTLE POSITION SENSOR
[ACCELERATOR PEDAL POSITION (APP) SEN-
SOR] ........................................................................179
Description ............................................................179
On Board Diagnosis Logic ....................................179
Possible Cause .....................................................179
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ...................................................................179
Diagnostic Procedure ............................................180
DTC P1760 OVERRUN CLUTCH SOLENOID
VALVE ................................... ....... ............. ............. ..181
Description ............................................................181
On Board Diagnosis Logic ....................................181
Possible Cause .....................................................181
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ...................................................................181
Wiring Diagram — AT — OVRCSV ......................183
Diagnostic Procedure ............................................184
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP
SENSOR CIRCUIT AND TCM POWER SOURCE) .186
Description ............................................................186
On Board Diagnosis Logic ....................................186
Possible Cause .....................................................186
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure ...................................................................186
Wiring Diagram — AT — BA/FTS .........................188
Diagnostic Procedure ............................................189
DTC VEHICLE SPEED SENSOR MTR ...................192
Description ............................................................192
On Board Diagnosis Logic ....................................192
Possible Cause .....................................................192
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Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure .................................................................. 192
Wiring Diagram — AT — VSSMTR ...................... 194
Diagnostic Procedure ........................................... 195
DTC TURBINE REVOLUTION SENSOR ............... 197
Description ........................................................... 197
On Board Diagnosis Logic ................................... 197
Possible Cause .................................................... 197
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure .................................................................. 197
Wiring Diagram — AT — TRSA/T ........................ 199
Diagnostic Procedure ........................................... 200
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM) ..................................................................... 202
Description ........................................................... 202
On Board Diagnosis Logic ................................... 202
Possible Cause .................................................... 202
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure .................................................................. 202
Diagnostic Procedure ........................................... 203
DTC CONTROL UNIT (EEP ROM) ......................... 204
Description ........................................................... 204
On Board Diagnosis Logic ................................... 204
Possible Cause .................................................... 204
Diagnostic Trouble Code (DTC) Confirmation Pro-
cedure .................................................................. 204
Diagnostic Procedure ........................................... 205
TROUBLE DIAGNOSIS FOR SYMPTOMS ............ 206
Wiring Diagram — AT — NONDTC ...................... 206
O/D OFF Indicator Lamp Does Not Come On ..... 209
Engine Cannot Be Started in P and N Position .....211
In P Position, Vehicle Moves Forward or Backward
When Pushed ....................................................... 212
In N Position, Vehicle Moves ................................ 212
Large Shock. N → R Position ............ ...... ....... ..... 214
Vehicle Does Not Creep Backward in R Position . 215
Vehicle Does Not Creep Forward in D or L Position . 217
Vehicle Cannot Be Started From D
A/T Does Not Shift: D
D
4 → D2 ............................................................... 221
A/T Does Not Shift: D
A/T Does Not Shift: D
1 → D2 or Does Not Kickdown:
2 → D 3 ................... ............ 223
3 → D4 ............................... 225
1 ..................... 219
A/T Does Not Perform Lock-up ............................ 227
A/T Does Not Hold Lock-up Condition ................. 229
Lock-up Is Not Released ...................................... 230
Engine Speed Does Not Return To Idle (Light Braking D
4 → D3 ) ....................................................... 231
Vehicle Does Not Start From D
A/T Does Not Shift: D
4 → D3 , When Overdrive Con-
1 ........................... 233
trol Switch ON → OFF ......................................... 233
A/T Does Not Shift: D
3 → L2 , When Sele ctor Lever
D → L Position ............................ ....... ...... ....... ..... 234
Vehicle Does Not Decelerate By Engine Brake ... 234
TCM Self-diagnosis Does Not Activate ................ 236
A/T SHIFT LOCK SYSTEM .................................... 242
Description ........................................................... 242
Shift Lock System Electrical Parts Location ......... 242
Wiring Diagram — AT — SHIFT ........................... 243
Diagnostic Procedure ........................................... 244
SHIFT CONTROL SYSTEM ....................................246
Removal and Installation ......................................246
Control Cable ........................................................247
KEY INTERLOCK CABLE ......................................248
Components .........................................................248
Removal ...............................................................248
Installation ............................................................249
ON-VEHICLE SERVICE ..........................................250
Control Valve Assembly and Accumulators ..........250
Revolution Sensor Replacement ..........................252
Turbine Revolution Sensor (Power Train Revolution
Sensor) Replacement ...........................................252
Park/Neutral Position (PNP) Switch Adjustment ..252
ATF Cooler ...........................................................252
ATF Cooler Valve ..................................................253
Control Cable Adjustment .....................................255
Differential Side Oil Seal Replacement ....... ....... ..255
REMOVAL AND INSTALLATION ...........................257
Removal ...............................................................257
Inspection After Removal .....................................257
Installation ............................................................257
OVERHAUL ............................................................258
Components .........................................................258
Oil Channel ...........................................................263
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ..........................264
DISASSEMBLY .......................................................265
Disassembly .........................................................265
REPAIR FOR COMPONENT PARTS .....................280
Manual Shaft ........................................................280
Oil Pump ...............................................................283
Control Valve Assembly ........................................287
Control Valve Upper Body ....................................296
Control Valve Lower Body ....................................300
Reverse Clutch .....................................................302
High Clutch ..... ...... ....................................... ....... ..305
Forward and Overrun Clutches ............................310
Low & Reverse Brake ...........................................316
Rear Internal Gear, Forward Clutch Hub and Over-
run Clutch Hub .......................... ...... ....... ...... ....... ..319
Output Shaft, Idler Gear, Reduction Pinion Gear and
Bearing Retainer ...................................................323
Band Servo Piston Assembly ...............................328
Final Drive ............................................................333
ASSEMBLY ....................................... ......................338
Assembly (1) .........................................................338
Adjustment (1) ......................................................339
Assembly (2) .........................................................344
Adjustment (2) ......................................................351
Assembly (3) .........................................................354
SERVICE DATA AND SPECIFICATIONS (SDS) ....361
General Specifications . ...... ....... ...... ......................361
Shift Schedule ......................................................361
Stall Revolution .....................................................361
Line Pressure .......................................................362
Control Valves ......................................................362
Accumulator ................. ...... ....... ............................362
Clutch and Brakes ................................................363
Final Drive ............................................................365
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Planetary Carrier and Oil Pump ............................365
Input Shaft ............................................................366
Reduction Pinion Gear .........................................366
Band Servo ...........................................................367
Output Shaft .........................................................367
Bearing Retainer ...................................................368
Total End Play .......................................................368
Reverse Clutch End Play ......................................368
Removal and Installation ......................................368
Shift Solenoid Valves ............................................369
Solenoid Valves .. ...... ...... ....... ...... ....... ...... ....... .....369
A/T Fluid Temperature Sensor ..............................369
Revolution Sensor ................................................369
Dropping Resistor .................................................369
Turbine Revolution Sensor (Power Train Revolution
Sensor) .................................................................369
RE5F22A
INDEX FOR DTC .....................................................370
Alphabetical Index ................................................370
DTC No. Index ................ ....... ...... ....... ...... ....... .....371
PRECAUTIONS ........................ ...... ....... ...... ....... .....372
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................... .......................... ..................372
Precautions for On Board Diagnostic (OBD) System
of A/T and Engine .................................................372
Precautions for A/T Assembly or TCM Replacement .373
Precautions ............... .......................... ..................374
Service Notice or Precautions ..............................375
PREPARATION .......................................................376
Special Service Tools ............................... ....... .....376
Commercial Service Tools .................. ...... ............378
A/T FLUID ...............................................................379
Changing A/T Fluid ...............................................379
Checking A/T Fluid ...................... ....... ...... ....... .....379
A/T Fluid Cooler Cleaning ....................................380
A/T CONTROL SYSTEM ........................................383
Cross-Sectional View ............................................383
Shift Mechanism ...................................................384
TCM Function .......................................................399
Input/Output Signal of TCM ..................................400
CAN Communication ............................................400
Line Pressure Control ...........................................401
Shift Control ..........................................................401
Lock-Up Control .. ...... ...... ....... ...... ....... ...... ....... .....403
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..........405
Introduction ............... ............................................405
OBD-II Function for A/T System ...........................405
One or Two Trip Detection Logic of OBD-II ..........405
OBD-II Diagnostic Trouble Code (DTC) ...............405
Malfunction Indicator Lamp (MIL) .........................408
TROUBLE DIAGNOSIS ..........................................409
DTC Inspection Priority Chart ...............................409
Fail-Safe ...............................................................409
How T o Perform Trouble Diagnosis For Quick and
Accurate Repair ....................................................411
A/T Electrical Parts Location .................................417
Circuit Diagram ............................... ....... ...... ....... ..418
Inspections Before Trouble Diagnosis ..................419
Check Before Engine is Started ............. ...............423
Check at Idle ... ....................................... ...... ....... ..423
Cruise Test - Part 1 ...............................................425
Cruise Test - Part 2 ...............................................426
Cruise Test - Part 3 ...............................................427
Shift Schedule .......................................................429
Symptom Chart .....................................................429
TCM Input/Output Signal Reference Values .........436
CONSULT-II Function (A/T) ..................................439
Diagnostic Procedure ............................................445
DTC U1000 CAN COMMUNICATION LINE ............448
Description ............................................................448
On Board Diagnosis Logic ....................................448
Possible Cause .....................................................448
DTC Confirmation Procedure ................................448
Wiring Diagram — AT — CAN ..............................449
Diagnostic Procedure ............................................450
DTC P0500 VEHICLE SPEED SENSOR MTR .......451
Description ............................................................451
On Board Diagnosis Logic ....................................451
Possible Cause .....................................................451
DTC Confirmation Procedure ................................451
Diagnostic Procedure ............................................452
DTC P0613 TCM PROCESSOR .............................453
Description ............................................................453
On Board Diagnosis Logic ....................................453
Possible Cause .....................................................453
DTC Confirmation Procedure ................................453
Diagnostic Procedure ............................................454
DTC P0705 PARK/N EUTRAL PO SITION SWIT CH .455
Description ............................................................455
On Board Diagnosis Logic ....................................455
Possible Cause .....................................................455
DTC Confirmation Procedure ................................455
Wiring Diagram — AT — PNP/SW .......................456
Diagnostic Procedure ............................................458
Component Inspection ..........................................460
DTC P0710 A/T FLUID TEMPERATURE SENSOR
CIRCUIT ..................................................................461
Description ............................................................461
On Board Diagnosis Logic ....................................461
Possible Cause .....................................................461
DTC Confirmation Procedure ................................461
Wiring Diagram — AT — FTS ...............................462
Diagnostic Procedure ............................................463
Component Inspection ..........................................465
DTC P0711 FL UID TEMPERA TURE SENSOR PER-
FORMANCE ............................................................466
Description ............................................................466
On Board Diagnosis Logic ....................................466
Possible Cause .....................................................466
DTC Confirmation Procedure ................................466
Wiring Diagram — AT — FTSP ............................467
Diagnostic Procedure ............................................468
Component Inspection ..........................................470
DTC P0717 TURBINE REVOLUTION SENSOR CIR-
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CUIT ............................ ............................................ 471
Description ........................................................... 471
On Board Diagnosis Logic ................................... 471
Possible Cause .................................................... 471
DTC Confirmation Procedure ............................... 471
Wiring Diagram — AT — TRSC ........................... 472
Diagnostic Procedure ........................................... 473
Component Inspection ......................................... 474
DTC P0722 VEHICLE SPEED SENSOR A/T (REV-
OLUTION SENSOR) CIRCUIT ............................... 475
Description ........................................................... 475
On Board Diagnosis Logic ................................... 475
Possible Cause .................................................... 475
DTC Confirmation Procedure ............................... 475
Wiring Diagram — AT — VSSATC ....................... 476
Diagnostic Procedure ........................................... 477
Component Inspection ......................................... 478
DTC P0726 ENGINE SPEED INPUT CIRCUIT PER-
FORMANCE ........................................................... 479
Description ........................................................... 479
On Board Diagnosis Logic ................................... 479
Possible Cause .................................................... 479
DTC Confirmation Procedure ............................... 479
Diagnostic Procedure ........................................... 479
DTC P0731 A/T 1ST GEAR FUNCTION ................ 481
Description ........................................................... 481
On Board Diagnosis Logic ................................... 481
Possible Cause .................................................... 481
DTC Confirmation Procedure ............................... 481
Wiring Diagram — AT — 1STSIG ........................ 482
Diagnostic Procedure ........................................... 483
DTC P0732 A/T 2ND GEAR FUNCTION ................ 484
Description ........................................................... 484
On Board Diagnosis Logic ................................... 484
Possible Cause .................................................... 484
DTC Confirmation Procedure ............................... 484
Wiring Diagram — AT — 2NDSIG ........................ 486
Diagnostic Procedure ........................................... 488
DTC P0733 A/T 3RD GEAR FUNCTION ................ 490
Description ........................................................... 490
On Board Diagnosis Logic ................................... 490
Possible Cause .................................................... 490
DTC Confirmation Procedure ............................... 490
Wiring Diagram — AT — 3RDSIG ........................ 492
Diagnostic Procedure ........................................... 494
DTC P0734 A/T 4TH GEAR FUNCTION ................ 496
Description ........................................................... 496
On Board Diagnosis Logic ................................... 496
Possible Cause .................................................... 496
DTC Confirmation Procedure ............................... 496
Wiring Diagram — AT — 4THSIG ........................ 498
Diagnostic Procedure ........................................... 499
DTC P0735 A/T 5TH GEAR FUNCTION ................ 501
Description ........................................................... 501
On Board Diagnosis Logic ................................... 501
Possible Cause .................................................... 501
DTC Confirmation Procedure ............................... 501
Wiring Diagram — AT — 5THSIG ........................ 503
Diagnostic Procedure ........................................... 505
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) .507
Description ................... ...... ....... ...... ......................507
On Board Diagnosis Logic ....................................507
Possible Cause .....................................................507
DTC Confirmation Procedure ...............................507
Wiring Diagram — AT — TCCSIG ........................508
Diagnostic Procedure ...........................................509
DTC P0745 PRESSURE CONTROL SOLENOID
VALVE A (LINE PRESSURE) .................................510
Description ................... ...... ....... ...... ......................510
On Board Diagnosis Logic ....................................510
Possible Cause .....................................................510
DTC Confirmation Procedure ...............................510
Wiring Diagram — AT — PC/A .............................511
Diagnostic Procedure ...........................................512
Component Inspection ..........................................514
DTC P0750 SHIFT SOLENOID VALVE A ...............515
Description ................... ...... ....... ...... ......................515
On Board Diagnosis Logic ....................................515
Possible Cause .....................................................515
DTC Confirmation Procedure ...............................515
Wiring Diagram — AT — SSV/A ...........................516
Diagnostic Procedure ...........................................517
Component Inspection ..........................................519
DTC P0755 SHIFT SOLENOID VALVE B ...............520
Description ................... ...... ....... ...... ......................520
On Board Diagnosis Logic ....................................520
Possible Cause .....................................................520
DTC Confirmation Procedure ...............................520
Wiring Diagram — AT — SSV/B ...........................521
Diagnostic Procedure ...........................................522
Component Inspection ..........................................524
DTC P0760 SHIFT SOLENOID VALVE C ...............525
Description ................... ...... ....... ...... ......................525
On Board Diagnosis Logic ....................................525
Possible Cause .....................................................525
DTC Confirmation Procedure ...............................525
Wiring Diagram — AT — SSV/C ..........................526
Diagnostic Procedure ...........................................527
Component Inspection ..........................................529
DTC P0762 SHIFT SOLENOID VALVE C STUCK ON .530
Description ................... ...... ....... ...... ......................530
On Board Diagnosis Logic ....................................530
Possible Cause .....................................................530
DTC Confirmation Procedure ...............................530
Wiring Diagram — AT — SSV/CS ........................531
Diagnostic Procedure ...........................................532
Component Inspection ..........................................534
DTC P0765 SHIFT SOLENOID VALVE D ...............535
Description ................... ...... ....... ...... ......................535
On Board Diagnosis Logic ....................................535
Possible Cause .....................................................535
DTC Confirmation Procedure ...............................535
Wiring Diagram — AT — SSV/D ..........................536
Diagnostic Procedure ...........................................537
Component Inspection ..........................................539
DTC P0770 SHIFT SOLENOID VALVE E ...............540
Description ................... ...... ....... ...... ......................540
On Board Diagnosis Logic ....................................540
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Possible Cause .....................................................540
DTC Confirmation Procedure ...............................540
Wiring Diagram — AT — SSV/E ...........................541
Diagnostic Procedure ...........................................542
Component Inspection ..........................................544
DTC P0775 PRESSURE CONTROL SOLENOID
VALVE B (SHIFT PRESSURE) ...............................545
Description ................ .......................... ..................545
On Board Diagnosis Logic ....................................545
Possible Cause .....................................................545
DTC Confirmation Procedure ...............................545
Wiring Diagram — AT — PC/B .............................546
Diagnostic Procedure ...........................................547
Component Inspection ..........................................549
DTC P0780 SHIFT ...................................................550
Description ................ .......................... ..................550
On Board Diagnosis Logic ....................................550
Possible Cause .....................................................550
DTC Confirmation Procedure ...............................550
Wiring Diagram — AT — SFTFNC .......................551
Diagnostic Procedure ...........................................553
DTC P0795 PRESSURE CONTROL SOLENOID
VALVE C (TCC AND SHIFT PRESSURE) ..............554
Description ................ .......................... ..................554
On Board Diagnosis Logic ....................................554
Possible Cause .....................................................554
DTC Confirmation Procedure ...............................554
Wiring Diagram — AT — PC/C .............................555
Diagnostic Procedure ...........................................556
Component Inspection ..........................................558
DTC P0797 PRESSURE CONTROL SOLENOID
VALVE C STUCK ON ..............................................559
Description ................ .......................... ..................559
On Board Diagnosis Logic ....................................559
Possible Cause .....................................................559
DTC Confirmation Procedure ...............................559
Wiring Diagram — AT — PC/CS ..........................560
Diagnostic Procedure ...........................................561
Component Inspection ..........................................563
DTC P0825 LEVER SWITCH CIRCUIT ..................564
Description ................ .......................... ..................564
On Board Diagnosis Logic ....................................564
Possible Cause .....................................................564
DTC Confirmation Procedure ...............................564
Wiring Diagram — AT — LVRSW .........................565
Diagnostic Procedure ...........................................566
Component Inspection ..........................................567
DTC P0882 TCM POWER INPUT SIGNAL ............568
Description ................ .......................... ..................568
On Board Diagnosis Logic ....................................568
Possible Cause .....................................................568
DTC Confirmation Procedure ...............................568
Wiring Diagram — AT — PWR/IN ........................569
Diagnostic Procedure ...........................................571
Component Inspection ..........................................572
DTC P1726 ELECTRIC THROTTLE CONTROL
SYSTEM ............................ ......................................573
Description ................ .......................... ..................573
TROUBLE DIAGNOSIS FOR SYMPTOMS ............574
O/D OFF Indicator Lamp Does Not Come On ......574
Engine Cannot Be Started In “P” or “N” Position ...576
In “P” Position, Vehicle Moves When Pushed .......576
In “N” Position, Vehicle Moves ..............................577
Large Shock (“N” to “D” Position) ..........................578
Vehicle Does Not Creep Backward In “R” Position .579
Vehicle Does Not Creep Forward In “D” or “L” Posi-
tion ........................................................................580
Vehicle Cannot Be Started From D
A/T Does Not Shift: D
A/T Does Not Shift: D
A/T Does Not Shift: D
A/T Does Not Shift: D
1 → D2 ................................581
2 → D3 ................................582
3 → D4 ................................583
4 → D5 ................................584
1 .....................581
A/T Does Not Perform Lock-up .............................585
A/T Does Not Hold Lock-up Condition ..................586
Lock-up Is Not Released .......................................587
A/T Does Not Shift: 5th gear → 4th gear, When Lever
Switch “OFF” → “ON” .. ...... ....... ...... ....... ...... ....... ..588
A/T Does Not Shift: 4th gear → 3rd gear, When
Selector Lever “D” → “L” Position .........................589
A/T Does Not Shift: 3rd gear → 2nd gear, When
Lever Switch “OFF” → “ON” .................................591
A/T Does Not Shift: 2nd gear → 1st gear, When
Release Accelerator Pedal ...................................592
Vehicle Does Not Decelerate By Engine Brake ....593
TCM Self-diagnosis Does Not Activate .................594
A/T SHIFT LOCK SYSTEM .....................................596
Description ............................................................596
Shift Lock System Electrical Parts Location ..........596
Wiring Diagram — AT — SHIFT ...........................597
Diagnostic Procedure ............................................598
SHIFT CONTROL SYSTEM ....................................600
Removal and Installation .......................................600
Control Cable ........................................................601
KEY INTERLOCK CABLE ......................................602
Components ....................... .................... ...............602
Removal ............................. ...................................602
Installation .......................... ...................................603
ON-VEHICLE SERVICE ..........................................604
Revolution Sensor Replacement ..........................604
Turbine Revolution Sensor Replacement .............604
Park/Neutral Position (PNP) Switch Adjustment ...604
ATF Cooler ............................................................605
ATF Cooler Valve ..................................................605
Control Cable Adjustment .....................................606
Side cover .............................................................607
Control Valve Assembly ........................................607
Transmission wire .................................................607
REMOVAL AND INSTALLATION ............................609
Removal ............................. ...................................609
Inspection After Removal ......................................609
Installation .......................... ...................................609
OVERHAUL ................................. ............................610
Components ....................... .................... ...............610
Locations of Needle Bearings, Bearing Races and
Thrust Washers .................. ....... ...... ....... ...... ....... ..616
DISASSEMBLY .......................................................617
Disassembly ....................... ....... ............. ............. ..617
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REPAIR FOR COMPONENT PARTS ..................... 636
Oil Pump, 2nd Coast Brake & 2nd Brake ............. 636
One-Way Clutch Outer Race Sub Assembly & 2nd
Coast Brake Hub & One-Way Clutch No.1 ........... 642
Transaxle Case Cover & B5 Brake ...................... 644
Differential Gear Assembly .................................. 650
ASSEMBLY ............................................................. 652
Assembly (1) ........................................................ 652
Adjustment ........................................................... 660
Assembly (2) ........................................................ 662
SERVICE DATA AND SPECIFICATIONS (SDS) .... 677
General Specifications ......................................... 677
Shift Schedule ......................................................677
Stall Speed ...........................................................678
Line Pressure .......................................................678
Time Lag ...............................................................678
Shift Solenoid Valves ............................................678
Solenoid Valves ....................................................679
Clutch, Gear and Brakes ......................................679
Final Drive ............................................................681
A/T Fluid Temperature Sensor ..............................682
Turbine Revolution Sensor ...................................682
Revolution Sensor ................................................682
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TROUBLE DIAGNOSIS - INDEX
[RE4F04B]
TROUBLE DIAGNOSIS - INDEX PFP:00000
Alphabetical & P No. Index for DTC
ECS00DZ8
ALPHABETICAL INDEX FOR DTC
NOTE:
If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for DTC U1000. Refer to
AT-104, "
A/T 1ST GR FNCTN P0731 AT-128
A/T 2ND GR FNCTN P0732 AT-133
A/T 3RD GR FNCTN P0733 AT-138
A/T 4TH GR FNCTN P0734 AT-143
A/T TCC S/V FNCTN P0744 AT-155
ATF TEMP SEN/CIRC P0710 AT-113
CAN COMM CIRCUIT U1000 AT-104
ENGINE SPEED SIG P0725 AT-124
L/PRESS SOL/CIRC P0745 AT-163
O/R CLTCH SOL/CIRC P1760 AT-181
PNP SW/CIRC P0705 AT-107
SFT SOL A/CIRC
SFT SOL B/CIRC
TCC SOLENOID/CIRC P0740 AT-150
THROTTLE POSI SEN
VEH SPD SEN/CIR AT
*1: These numbers are prescribed by SAE J2012.
*2: When the fail-safe operation occurs, th e MIL ill um in ate s.
*3: The MIL illuminates when bot h the “Revolution sens or signal” and the “Vehicle speed sensor si gnal” meet the fail-safe condi tion at
the same time.
DTC U1000 CAN COMMUNICATION LINE" .
Items
(CONSULT-II screen terms)
*2
*2
*2
*3
DTC
CONSULT-II
*1
GST
P0750 AT-169
P0755 AT-174
P1705 AT-179
P0720 AT-119
Reference page
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AT-8
Page 26
TROUBLE DIAGNOSIS - INDEX
[RE4F04B]
P NO. INDEX FOR DTC
NOTE:
If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for DTC U1000. Refer to
AT-104, "
*1: These numbers are prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates.
*3: The MIL illuminates when both the “Rev olution sensor sign al” and the “Vehicle speed sensor signal” meet the fail-safe condi tion at
the same time.
DTC U1000 CAN COMMUNICATION LINE" .
DTC
CONSULT-II
*1
GST
P0705 PNP SW/CIRC AT-107
P0710 ATF TEMP SEN/CIRC AT-113
P0720
P0725 ENGINE SPEED SIG AT-124
P0731 A/T 1ST GR FNCTN AT-128
P0732 A/T 2ND GR FNCTN AT-133
P0733 A/T 3RD GR FNCTN AT-138
P0734 A/T 4TH GR FNCTN AT-143
P0740 TCC SOLENOID/CIRC AT-150
P0744 A/T TCC S/V FNCTN AT-155
P0745 L/PRESS SOL/CIRC AT-163
P0750
P0755
P1705
P1760 O/R CLTCH SOL/CIRC AT-181
U1000 CAN COMM CIRCUIT AT-104
VEH SPD SEN/CIR AT
SFT SOL A/CIRC
SFT SOL B/CIRC
THROTTLE POSI SEN
(CONSULT-II scr e en te rms )
*2
*2
Items
*3
*2
Reference page
AT-119
AT-169
AT-174
AT-179
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PRECAUTIONS
[RE4F04B]
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEA T
BELT PRE-TENSIONER”
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front sea t belt , helps t o redu ce th e r isk or s everi ty of injury to th e driv er an d front passenge r for c ertain
types of collisi on . Thi s s ys te m in cludes seat belt swi tch inp uts an d du al stage front air bag modul es . The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information ne ce ss ary t o se rvi ce th e sy stem saf e ly is i nclu de d in th e SR S and SB se ct i on of th is Ser vic e Manual.
WARNING:
● To avoid rendering the SRS inoperative, which could inc rease the ris k of personal inju ry or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer.
● Improper maintenance, including i ncorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For rem ova l of Sp iral Ca ble an d Air
Bag Module, see the SRS section.
● Do not use electrical test equipment on any circuit relate d to the SRS unless instructed to in t his
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors .
ECS00DZ9
Precautions for On Board Diagnostic (OBD) System of A/T and Engine
ECS00DZA
The ECM has an on bo ard diagnostic system. It wil l light up the malfunction in dicator lam p (MIL) to warn the
driver of a malfuncti on caus in g em is si on deterioration.
CAUTION:
● Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any
repair or inspection work. Th e open/short circuit of related switc hes, sensors, solenoid valves,
etc. will cause the MIL to light up.
● Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
● Be sure to route and secure the harnesses pr operly after w ork. Interfe rence of the harne ss with a
bracket, etc. may cause the MIL to light up due to a short circuit.
● Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to a malfunction of the EGR system or fuel injection system, etc.
● Be sure to erase the unnecessary malfu nction information (repairs completed) from the TC M or
ECM before returning the vehicle to the customer.
Precautions
● Before connecting or disconnecting th e TCM harness con-
ECS00DZB
nector, turn ignition switch OFF and disconnect negative
battery cable. Failure to do so may damage the TCM.
Because battery voltage is applied to TCM even if ignition
switch is turned off.
SEF289H
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AT-10
Page 28
PRECAUTIONS
● When connecting or disconn ecting pin connectors into or
from TCM, take care not to dama ge pin terminals (bend or
break).
Make sure that there are not any ben ds or breaks on TCM
pin terminal, when connecting pin connectors.
● Before replacing TCM, perform TCM input/output signal
inspection and make sure wheth er TCM functions properly
or not. Refer to AT-98, "
TCM INSPECTION TABLE" .
[RE4F04B]
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AAT470A
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MEF040DA
● After performing each TROUBLE DIAGNOSIS, perform
“DTC (Diagnostic Trouble Code) CONFIRMATION PROCEDURE”.
The DTC should not be displ ayed in the “DTC CONFIRMATION PROCEDURE” if the repair is completed.
● Before proceeding with disas sembly, thoroughly clean the out-
side of the tran saxle. It is i mportant to preven t the in ternal parts
from becoming c ontaminated by dirt or other foreign matter.
● Disassembly should be done in a clean work area.
● Use lint-free cloth or towels for wiping parts clean. Common
shop rags can leav e f iber s th at co uld in te rf er e wi th th e oper a t ion
SAT964I
of the transaxle.
● Place disassembled p arts in ord er for easier and proper assemb ly.
● All parts should be carefull y cleaned with a g eneral purp ose, no n-flamm able so lvent be fore inspe ction or
reassembly.
● Gaskets, seals and O-rings should be replaced any time the transaxle is disassembled.
● It is very important to perform functional tests whenever they are indicated.
● The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent
springs and small parts from becoming scattered or lost.
● Properly installed valves, sleeves, plugs, etc. w ill slide along bores in valve body under their own weight.
● Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings
and seals, or hold bearings and washers in place during assembly. Do not use grease.
● Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
● Clean or replace ATF cooler if excessive foreign material is found in oil pan or clogging strainer. Refer to
AT-12, "
● After overhaul, refill the transaxle with new ATF.
● When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque
ATF COOLER SERVICE" .
converter and ATF cooling system.
Always follow the procedures when changing A/T fluid. Refer to MA-25, "
Changing A/T Fluid" .
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PRECAUTIONS
[RE4F04B]
Service Notice or Precaution s
ECS00DZC
FAIL-SAFE
The TCM has an electronic Fail-Safe (limp home mode). This allows the vehicle to be driven even if a major
electrical input/output device circuit is damaged.
Under Fail-Safe, the vehicle always runs in third gear, even with a shift lever position of L or D. The customer
may complain of sl ug gi sh or poor ac ce leration.
When the ignition key is turned ON followi ng Fail-Safe operatio n, O/D OFF indicator lamp blinks for about 8
seconds. [F or “TCM Self-diagnos tic Procedure (No Tools)”, refer to AT- 5 8 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" .]
The blinking of the O/D OFF ind icator lamp for abou t 8 seconds will a ppear only once an d be cleared. The
customer may resume normal driving conditions.
Always follow the “Work Flow” (Refer to AT-67, "
Work Flow" ).
The SELF-DIAGNOSIS results will be as follows:
● The first SELF-DIAGNOSIS will indicate damage to the vehicle speed sensor or the revolution sensor.
● During the next SELF-DIAGNOSIS, performed after checking the sensor, no damages will be indicated.
TORQUE CONVERTER SERVICE
The torque converter should be replaced under any of the following conditions:
● External leaks in the hub weld area.
● Converter hub is scored or damaged.
● Converter pilot is broken, damaged or fits poorly into crankshaft.
● Steel p articles are found after flushing the cooler and cooler lines.
● Pump is damaged or steel particles are found in the converter.
● Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses
have been made. (Converter clutch material may be glazed.)
● Converter is contaminated with engine coolant containing antifreeze.
● Internal failure of stator roller clutch.
● Heav y clutch debris due to overheating (blue converter).
● Steel particles or clutch lining material found in fluid filter or on magnet when no internal parts in unit are
worn or damaged — indicates that lining material came from converter.
The torque converter sho uld not be replaced if:
● The fluid has an odor, is discolored, and there is no evidence of metal or clutch facing par ticles.
● The threads in one or more of the converter bolt holes are damaged.
● Transaxle fai l ure di d no t dis pl ay evi den ce o f d amage d o r worn i nt ern al p ar t s, st ee l p a rt ic les or clut ch pl ate
lining material in unit and inside the fluid filter.
● Vehicle has been exposed to high mileage (only). The exception may be where the torque converter
clutch dampen er plat e li ning has se en ex ces s wear by vehi cl es op erate d in he avy a nd/ or con stant traffic,
such as taxi, delivery or police use.
ATF COOLER SERVICE
If A/T fluid contains frictional material (clutches, bands, etc.), or if an A/T is repaired, overhauled, or replaced,
inspect and cl ean t he A/T fluid coo ler m ounte d in the ra diato r o r repla ce t he rad iator. Flush cool er lin es u sing
cleaning solvent and compressed air after repair. For A/T fluid cooler cleaning procedure, refer to AT- 69, "
A/T
Fluid Cooler Cleaning" . For radiat or replacement , refer to CO-14, "RADIATOR" .
OBD-II SELF-DIAGNOSIS
● A/T self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the O/D OFF indicator or the malfunction indicator lamp (MIL). Refer to the table on
AT-47
for the indicator used to display each self-diagnostic result.
● The self-diagnostic results ind ic at ed by th e M IL are automaticall y s t ore d in bo th th e EC M an d TCM mem-
ories.
Always perform the procedure “HOW TO ERASE DTC” on AT-44
unnecessary blinking of the MIL.
● The following self-diagn ostic items can b e detected usi ng ECM self-diagn ostic results mode* only when
the O/D OFF indicator lamp does not indicate any malfunctions.
– park/neutral position (PNP) switch
Revision: July 2006 2006 Quest
AT-12
to complete the re pair and av oid
Page 30
PRECAUTIONS
[RE4F04B]
*: For details of OBD-II, refer to EC-50, "ON BOARD DIAGNOSTIC (OBD) SYSTEM" .
● Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness con nec tor.
For description and how to disconnect, refer to PG-66, "
HARNESS CONNECTOR" .
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PREPARATION
[RE4F04B]
PREPARATION PFP:00002
Special Service Tools
The actual shapes of Kent-Moore tools may differ from those of spe ci al se rvice tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
KV381054S0
(J-34286)
Puller
ST33400001
(J-26082)
Drift
—
(J-34301-C)
Oil pressure gauge set
1 —
(J-34301-1)
Oil pressure gauge
2 —
(J-34301-2)
Hoses
3 —
(J-34298)
Adapter
4 —
(J-34282-2)
Adapter
5 —
(790-301-1230-A)
60° Adapter
6 —
(J-34301-15)
Square socket
ST27180001
(J-25726-A)
Puller
NT414
NT086
AAT896
Description
● Removing differential side oil seals
● Removing differential side bearing outer
race
● Removing idler gear bearing outer race
a: 250 mm (9.84 in)
b: 160 mm (6.30 in)
● Installing differential side oil seal
(RH side)
● Installing oil seal on oil pump housing
a: 60 mm (2.36 in) dia.
b: 47 mm (1.85 in) dia.
Measuring line pressure
Removing idler gear
a: 100 mm (3.94 in)
b: 110 mm (4.33 in)
c: M8 x 1.25P
ECS00DZE
NT424
ST23540000
(J-25689-A)
Pin punch
Removing and installing parking rod plate and
manual plate pins
a: 2.3 mm (0.091 in) dia.
b: 4 mm (0.16 in) dia.
NT442
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AT-14
Page 32
PREPARATION
[RE4F04B]
Tool number
(Kent-Moore No.)
Tool name
ST25710000
(J-25689-A)
Pin punch
KV32101000
(J-25689-A)
Pin punch
KV31102400
(J-34285 and J-34285-87)
Clutch spring compressor
KV40100630
(J-26092)
Drift
NT410
NT410
NT423
Description
Aligning groove of manual shaft and hole of
transmission case
a: 2 mm (0.08 in) dia.
● Removing and installing manual shaft re-
taining pin
● Removing and installing pinion m at e shaf t
lock pin
a: 4 mm (0.16 in) dia.
● Removing and installing clutch return
springs
● Installing low & reverse brake piston
a: 320 mm (12.60 in)
b: 174 mm (6.85 in)
● Installing reduction gear bearing inner race
● Installing idler gear bearing inner race
a: 67.5 mm (2.657 in) dia.
b: 44 mm (1.73 in) dia.
c: 38.5 mm (1.516 in) dia.
A
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ST30720000
(J-25405 and J-34331)
Bearing installer
ST35321000
( — )
Drift
—
(J-34291-A)
Shim setting gauge set
NT107
NT115
NT073
NT101
Installing idler gear bearing outer race
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.
Installing output shaft bearing
a: 49 mm (1.93 in) dia.
b: 41 mm (1.61 in) dia.
● Selecting oil pump cover beari ng rac e and
oil pump thrust washer
● Selecting side gear thrust washer
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AT-15
Page 33
PREPARATION
[RE4F04B]
Tool number
(Kent-Moore No.)
Tool name
ST33230000
(J-25805-01)
Drift
—
(J-34290)
Shim selecting tool set
ST3306S001
(J-22888-D)
Differential side bearing puller set
1 ST33051001
(J-22888-D)
Puller
2 ST33061000
(J-8107-2)
Adapter
ST3127S000
(J-25765-A)
Preload gauge
1 GG91030000
(J-25765-A)
Torque wrench
2 HT62940000
( — )
Socket adapter
3 HT62900000
( — )
Socket adapter
ST35271000
(J-26091)
Drift
Description
Installing differential side bearing inner race
(RH side)
a: 51 mm (2.01 in) dia.
b: 28.5 mm (1.122 in) dia.
NT084
Selecting differential side bearing adjusting
shim
NT080
Removing differential side bearing in ner race
a: 38 mm (1.50 in) dia.
b: 28.5 mm (1.122 in) dia.
c: 130 mm (5.12 in)
d: 135 mm (5.31 in)
e: 100 mm (3.94 in)
AMT153
Checking differential side bearing preload
NT124
Installing idler gear
a: 72 mm (2.83 in) dia.
b: 63 mm (2.48 in) dia.
NT115
—
(J-39713)
Preload adapter
NT087
Commercial Service Tools
Revision: July 2006 2006 Quest
AT-16
● Selecting differential side bearing adjusting
shim
● Checking different ial side bearing preload
ECS00DZF
Page 34
PREPARATION
[RE4F04B]
Tool name Description
Puller
NT077
Puller Removing reduction gear bearin g inne r race
NT411
Drift Installing needle bearing on bearing retain er
NT083
Drift Removing needle bearing from bearing retain-
● Removing idler gear bear in g inn er race
● Removing and installing ba nd ser vo pist on
snap ring
a: 60 mm (2.36 in) dia.
b: 35 mm (1.38 in) dia.
a: 36 mm (1.42 in) dia.
er
a: 33.5 mm (1.319 in) dia.
A
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NT083
Drift Installing differential side bearing outer race
(RH side)
a: 75 mm (2.95 in) dia.
NT083
● Removing transaxl e assembly
● Removing transaxle oil pan
● Removing transaxle case an d cove r
Power tool
PBIC0190E
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AT-17
Page 35
A/T FLUID
[RE4F04B]
A/T FLUID PFP:KLE40
Changing A/T Fluid
ECS00EE7
1. Run the engine to warm up the tr ansaxle until the fluid is at f ull operating t emperature “HOT”.
Temperature range
COLD : 30° – 50° C (86° – 122° F)
HOT : 50° – 80° C (122° – 176° F)
2. Stop the engine.
3. Remove the engine undercover.
4. Drain the A/T fluid by removing the drain plug. Reinstall the drain
plug to the specified tightness using a new drain washer.
Drain plug : 34 N·m (3.5 kg-m, 25 ft-lb)
WLIA0009E
5. Refill the transaxle with new specified A/T fluid through the A/T fluid charging pipe. Always refill the tran-
saxle with the same volume amount that was drained out.
Fluid grade and capacity Refer to MA-9, "RECOMMENDED FLUIDS AND LUBRICANTS" .
CAUTION:
Do not overfill the transaxle.
6. Run the engine at id le speed for five minutes.
7. Check fluid level and condition. Refer to AT-1 8 , "
Checking A/T Fluid" . If th e fluid is still contaminated,
repeat step 2 through 5.
Checking A/T Fluid
1. Warm up the engine.
2. Check for any transaxle fluid leaks.
3. Before drivin g, the fluid level can be chec ked at fluid tempera-
ture using the “COLD” range on the A/T fluid level gauge.
Temperature range
COLD : 30° – 50° C (86° – 122° F)
HOT : 50° – 80° C (122° – 176° F)
a. Park the vehicle on a level surface and set parking brake.
b. Start the engine and move the transax le selector lever through
each gear position. Leave the selector lever in the “P” park position.
c. Check the fluid level with t he engine idling.
CAUTION:
Firmly secure the A/T fluid level gauge into the A/T fluid
charging pipe using the attached stopper, this will provide
an accurate reading on the gauge.
d. Remove the A/T fluid level gauge and wipe it clean with a lint-
free paper.
e. Re-insert th e A/T fluid lev el gauge in to the chargi ng pipe as far
as it will go .
ECS00EE8
WLIA0013E
WLIA0008E
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AT-18
Page 36
A/T FLUID
[RE4F04B]
f. Remove the A/T fluid level ga uge and note the re ading. If the read ing is at or belo w the low side of th e
range, add the necessary specified A/T fluid through the A/T fluid charging pipe and then re-insert the A/T
fluid level gauge.
CAUTION:
● Do not overfill the transaxle.
● Firmly secure the A/T fluid le vel ga uge into the A/T fluid ch arg ing pipe using the attached s top-
per , th is will prov ide an accu rate readi ng on the gau ge, an d wil l keep th e gau ge in po sit ion wh ile
driving.
4. Drive the vehicle for approximately 5 minutes at moderate speeds.
5. Re-check the fluid level at fluid temperatures using the “HOT”
range on the A/T fluid level gauge.
Temperature range
COLD : 30° – 50° C (86° – 122° F)
HOT : 50° – 80° C (122° – 176° F)
CAUTION:
Firmly secure the A/T fluid level gauge into the A/T fluid
charging pipe using the attached stopper, this will provide
an accurate reading on the gauge, a nd will keep the gauge
in position while driving.
6. Check the fluid fo r the following conditions:
● If the fluid is very dark or s mells burned , refer to the AT sec-
tion for check ing the opera tion of the tran saxle. Flus h the AT
fluid cooling system after repairing the transaxle.
● If the fluid contains frictional material (from the clutches or
bands), remove th e ra di ator and flush the co oler lines using a
cleaning solven t and compress ed air after c ompleting r epairs
to the transaxle. Refer to CO-14, "
RADIATOR" .
WLIA0013E
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SMA853B
A/T Fluid Cooler Cleaning
ECS00EE9
Whenever an au tomatic transaxle is repaired, overhauled, or replaced, the A/T fluid cooler mounted in the
radiator must be inspected and cleaned.
Metal debris and fri ct ion ma teri al, i f pres ent, can beco me trapp ed i n the A/T fl uid c oole r. This debris ca n co ntaminate the newly serviced A/T or, in severe cases, can block or restrict the flow of A/T fluid. In either case,
malfunction of the newly serviced A/T may result.
Debris, if present, may build up as A/T fluid enters the cooler inlet. It will be necessary to back flush the cooler
through the cooler outlet in order to flush out any built up debris.
A/T FLUID COOLER CLEANING PROCEDURE
1. Position an oil pan under the au tomatic transaxle's inlet and outlet cooler hoses.
2. Identify the inlet and outlet fluid cooler hoses.
3. Disconnect the fluid cooler inlet and outlet rubber hoses from the
steel cooler tubes or bypass valve.
NOTE:
Replace the cooler hoses if rubber material from the hose
remains on the tube fitting.
4. Allow any A/T fluid that remains in the cooler hoses to drain into
the oil pan.
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SCIA2945E
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AT-19
Page 37
A/T FLUID
5. Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissa n P/N 999M P-AM0 06) into the co oler ou tlet hose.
CAUTION:
● Wear safety glasses and rubber gloves when spraying
the Transmission Cooler Cleaner.
● Spray cooler cleaner only with adequate ventilation.
● Avoid contact with eyes and skin.
● Do not breath vapors or spray mist.
6. Hold the hose and can as high as possible and spray Transmission Cooler Cleaner in a continuous stream into the cooler outlet
hose until fluid flows out of the cooler inlet hose for 5 seconds.
7. Insert the tip of an air gun into the end of the cooler outlet hose.
8. Wrap a shop rag around the air gun tip and of the cooler outlet
hose.
[RE4F04B]
SCIA2955E
SCIA2962E
2
9. Blow compresse d air regulated to 5 - 9 kg/c m
(70 - 130 psi) through the cooler outlet hose for 10 sec-
onds to force out any remaining fluid.
10. Repeat steps 5 through 9 three additional times.
11. Position an oil pan under the banjo bolts that connect the fluid cooler steel lines to the transaxle.
12. Remove the banjo bolts.
13. Flush each steel line from the cooler side back toward the transaxle by spraying Transmission Cooler
Cleaner in a continuous stream for 5 seconds.
2
14. Blow compress ed air re gu la te d to 5 - 9 k g/c m
(70 - 130 psi) through each steel line from the cooler side
back toward the transaxle for 10 seconds to force out any remaining fluid.
15. Ensure all debris is removed from the steel cooler lines.
16. Ensure all debris is removed from the banjo bolts and fittings.
17. Perform AT-20, "
A/T FLUID COOLER DIAGNOSIS PROCEDURE" .
A/T FLUID COOLER DIAGNOSIS PROCEDURE
NOTE:
Insufficient cleaning of the cooler inlet hose exterior may lead to inaccurate debris identification.
1. Position an oil pan under the automatic transaxle's inlet and outlet cooler hoses.
2. Clean the exterior and tip of the cooler inlet hose.
3. Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissa n P/N 999M P-AM0 06) into the co oler ou tlet hose.
CAUTION:
● Wear safety glasses and rubber gloves when spraying
the Transmission Cooler Cleaner.
● Spray cooler cleaner only with adequate ventilation.
● Avoid contact with eyes and skin.
● Do not breath vapors or spray mist.
4. Hold the hose and can as high as possible and spray Transmission Cooler Cleaner in a continuous stream into the cooler outlet
hose until fluid flows out of the cooler inlet hose for 5 seconds.
SCIA2955E
Revision: July 2006 2006 Quest
AT-20
Page 38
A/T FLUID
5. Tie a common white, basket-type coffee filter to the end of the
cooler inlet hose.
6. Insert the tip of an air gun into the end of the coo ler outlet hose.
7. Wrap a shop rag around the air gun tip and end of cooler outlet
hose.
8. Blow compressed air regulated to 5 - 9 kg/cm
through the cool er outlet hose to force any remaining A/T fluid
into the coffee filter.
9. Remove the coffee filter from the end of the cooler inlet hose.
10. Perform AT-21, "
A/T FLUID COOLER INSPECTION PROCE-
DURE" .
2
(70 - 130 psi)
[RE4F04B]
A
B
AT
SCIA2965E
D
E
F
G
SCIA2966E
A/T FLUID COOLER INSPECTION PROCEDURE
1. Inspect the coffee filter for debris.
a. If smal l metal debris less than 1mm (0.040 in) in size or metal
powder is found in the coffee filter, this is normal. If normal
debris is found, the A/T fluid cooler/radiator can be re-used and
the procedur e is ended.
b. If one or more pieces of debris are found that are over 1mm
(0.040in) in size and/or peeled clutch facing material is found in
the coffee filter, the fluid cooler is not serviceable. The radiator/
fluid cooler must be replaced and the inspection procedure is
ended.
SCIA2967E
SCIA5257E
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A/T FLUID COOLER FINAL INSPECTION
After performing all procedures, ensure that all remaining oil is cleaned from all components.
Revision: July 2006 2006 Quest
AT-21
Page 39
OVERALL SYSTEM
[RE4F04B]
OVERALL SYSTEM PFP:00000
A/T Electrical Parts Location
ECS00DZG
BCIA0001E
Revision: July 2006 2006 Quest
AT-22
Page 40
OVERALL SYSTEM
[RE4F04B]
Circuit Diagram
ECS00DZH
A
B
AT
D
E
F
G
H
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BCWA0433E
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AT-23
Page 41
OVERALL SYSTEM
[RE4F04B]
Cross-sectional View
ECS00DZI
SCIA3174E
1. Band servo piston 2. Reve rse clutch drum 3 . Converter housi ng
4. Oil pump 5. Brake band 6. Reverse clutch
7. High clutch 8. Front planetary gear 9. Low one-way clutch
10. Rear planetary gear 11. Forward clutch 12. Overrun clutch
13. Low & reverse brake 14. Output gear 15. Idler gear
16. Forward one-way clutch 17. Pinion red uct i on gear 18. Final gear
19. Differential case 20. Input shaft 21. Torque converter
22. Side cover 23. Transaxle case
Revision: July 2006 2006 Quest
AT-24
Page 42
OVERALL SYSTEM
[RE4F04B]
Hydraulic Control Circuit
ECS00DZJ
A
B
AT
D
E
F
G
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SAT489K
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AT-25
Page 43
OVERALL SYSTEM
[RE4F04B]
Shift Mechanism
CONSTRUCTION
1. Torque converter 2. Oil pump 3. Input shaft
4. Brake band 5. R ev ers e clu tc h 6. High clutch
7. Front sun gear 8. Front pinion gear 9. Front internal gear
10. Front planetary carrier 11. Rear sun gear 12. Rear pinion gear
13. Rear internal gear 14. Rear planetary carrier 15. Forward clutch
16. Forward one-way clutch 17. Overrun clutch 18. Low one-way clutch
19. Low & reverse brake 20. Parking pawl 21. Parking gear
22. Output shaft 23. Idle gear 24. Output gear
ECS00DZK
SAT998I
FUNCTION OF CLUTCH AND BRAKE
Clutch and brake components Abbr. Function
Reverse clutch 5 R/C To transmit input power to front sun gear 7 .
High clutch 6 H/C To transmit input power to front planetary carrier 10 .
Forward clutch 15 F/C To connect front planetary carrier 10 with forward one-way clutch 16 .
Overrun clutch 17 O/C To connect front planetary carrier 10 with rear internal gear 13 .
Brake band 4 B/B To lock front sun gea r 7 .
Forward one-way clutch 16 F/O.C When forward clutch 15 is engaged, to stop rear internal gear 13
from rotating in opposite direction against engine r evol ut i on.
Low one-way clutch 18 L/O.C To stop front planetary carrier 10 from rotating in opposite direction
against engine revolution.
Low & reverse brake 19 L & R/B To lock front planetary carrier 10 .
Revision: July 2006 2006 Quest
AT-26
Page 44
OVERALL SYSTEM
[RE4F04B]
CLUTCH AND BAND CHART
Band servo For-
Re-
Shift position
P
RO O
N
D*4
L
*1: Operates when overdrive control sw itch is set in “OFF” position.
*2: Oil pressure is applied to both 2nd “apply” side and 3rd “release” side of band s ervo pi ston. H oweve r, brake band does not contract
because oil pressure area on the “release” side is greater than that on the “apply” side.
*3: Oil pressure is applied to 4th “apply” side in condi tion *2 above, and brake band contracts.
*4: A/T will not shift to 4th when selector lever is set in 3 position.
O: Operates
A: Operates when throttle opening is less than 3/16, activating engine brake.
B: Operates during “progressive” acceleration.
C: Operates but does not affect power transmission.
D: Operates when throttle opening is less than 3/16, but does not affect engine brake.
verse
clutch
1st O *1D B B
2nd O *1 A O B
3rd O O *1 A *2C C B *1O
4th O C *3C C O O
1st O O B B
2nd O O O B
3rd OOO*2CC B
High
clutch
5
6
For-
ward
clutch
15
Over-
run
clutch
17
2nd
apply
3rd re-
lease
4th
apply
ward
one-
way
clutch
16
Low
one-
way
clutch
18
Low &
reverse
brake
19
Lock-
up
Remarks
PARK POSI-
TION
REVERSE
POSITION
NEUTRAL
POSITION
Automatic
shift
1 ⇔ 2 ⇔ 3
⇔ 4
Automatic
shift
1 ⇔ 2 ⇐ 3
A
B
AT
D
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F
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Revision: July 2006 2006 Quest
AT-27
Page 45
OVERALL SYSTEM
[RE4F04B]
POWER TRANSMISSION
P and N Positions
● P position
Similar to the N po sitio n, th e clu tche s do not opera te. Th e parkin g pawl enga ges with th e parking gea r to
mechanically hold the out put shaft so th at the power train is locked.
● N position
Power from the input shaft is not transmitted to the output shaft because the clutches do not operate.
SAT991I
Revision: July 2006 2006 Quest
AT-28
Page 46
D1 and L1 Positions
OVERALL SYSTEM
[RE4F04B]
A
B
AT
D
E
F
G
● Forward one-way clutch
● Forward clutch
● Low one-way clutch
Overrun clutch
engagement conditions
(Engine brake)
SCIA3325E
Rear internal gear is locked to rotate counterclockwi se because of the functioning of these
three clutches.
D
1 : Overdrive control switch “OFF” and throttle opening is less than 3/16
L
1 : Always engaged
1 and L1 positions, engine brake i s not activ ate d due to free turni ng of low one -way
At D
clutch.
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Revision: July 2006 2006 Quest
AT-29
Page 47
D2 and L2 Positions
OVERALL SYSTEM
[RE4F04B]
● Forward clutch
● Forward one-way clutch
● Brake band
Overrun clutch
engagement conditions
SCIA3326E
Rear sun gear drives rear planetary carrier and combined front internal gear. Front internal
gear now rotates around front sun gear accompanying fron t planetary car rie r.
As front planetary carrier transfers the power to rear internal gear through forward clutch and
forward one-way clutch, this rotation of rear internal gear increases the speed of rear planetary carrier compared with that of the 1st speed.
2 : Overdrive control switch “OFF” and throttle opening is less than 3/16
D
2 : Always engaged
L
Revision: July 2006 2006 Quest
AT-30
Page 48
D3 and L3 Positions
OVERALL SYSTEM
[RE4F04B]
A
B
AT
D
E
F
G
● High clutch
● Forward clutch
● Forward one-way clutch
Overrun clutch
engagement conditions
SCIA3327E
Input power is transmitted to front planetary carrier throug h hig h clutc h. And front planetary
carrier is connected to rear internal gear by operation of forward clutch and forward one-way
clutch.
This rear internal gear rotation and another input (the rear sun gear ) acc om pany rear pla netary carrier to turn at the same speed.
3 : Overdrive control switch “OFF” and throttle opening is less than 3/16
D
3 : Always engaged
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Revision: July 2006 2006 Quest
AT-31
Page 49
D4 Position
OVERALL SYSTEM
[RE4F04B]
SCIA3328E
● High clutch
● Brake band
● Forward clutch (Does not affect
power transmission)
Engine brake At D4 position, there is no one-way clutc h in the power tr ansm i ssion line and engine brake
Input power is transmitted to front carrier through high clutch.
This front carrier turns around the sun gear which is fixed by brake band and makes front
internal gear (output) turn faster.
can be obtained when decelerating.
Revision: July 2006 2006 Quest
AT-32
Page 50
R Position
OVERALL SYSTEM
[RE4F04B]
A
B
AT
D
E
F
G
SCIA3329E
● Reverse clutch
● Low & reverse brake
Engine brake As there is no one-way clutch in the power transmission line, engine brake can be obtained
Front planetary carrier is stationary because of the operation of low & reverse brake.
Input power is transmitted to front sun gear through reverse clutch, which drives front internal gear in the opposite direction.
when dece l erating.
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AT-33
Page 51
OVERALL SYSTEM
[RE4F04B]
Control System
ECS00DZL
OUTLINE
The automatic transaxle senses ve hicle operating c onditions throug h various sensors . It always controls the
optimum shift position and reduces shifting and lock-up shocks.
SENSORS (or SIGNALS) TCM ACTUATORS
Park/neutral position (PNP) switch
Accelerator pedal position (APP) signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed signal
Overdrive control switch
ASCD control signal
Stop lamp switch
Turbine revolution sensor (power train
revolution sensor)
Shift control
Line pressure control
Lock-up control
Overrun clutch control
Timing control
Fail-safe control
Self-diagnosis
CAN communication line control
Shift solenoid valve A
Shift solenoid valve B
Overrun clutch solenoid valve
T orque converter clutch solenoid
valve
Line pressure solenoid valve
O/D OFF indicator lamp
CONTROL SYSTEM
WCIA0569E
Revision: July 2006 2006 Quest
AT-34
Page 52
OVERALL SYSTEM
[RE4F04B]
TCM FUNCTION
The function of the TCM is to:
● Receive input signals sent from various switches and sensors.
● Determine required line pressure, shifting point, lock-up operation, and engine brake operation.
● Send required output signals to the respective solenoids.
INPUT/OUTPUT SIGNAL OF TCM
Control Item Function
Park/neutral position (PNP) switch Detects select lever position and sends a signal to TCM.
Accelerator pedal position (APP) signal Detects throttle valve position and sends a signal to TCM.
Detects throttle valves fully-closed posit ion and sends a signal from ECM to
TCM.
Detects throttle valve position of greater than 1/2 or full thro ttle and sends a
signal from ECM to TCM.
Used as an auxiliary vehicle speed sensor. Sends a signal when revolution
sensor (installed on transmission) malfunctions.
4 (overdrive) position , to the TCM.
Sends the cruise signal and D
TCM.
Detects forward clutch drum rpm and sends a signal to TCM .
Selects shifting point suited to driving conditions in relati on to a signa l sent
from TCM.
Regulates (or decreases) line pressure suited to driving conditions in relation
to a signal sent from TCM.
Regulates (or decreases) lock-up pr essure suited to driving conditions in relation to a signal sent from TCM.
Controls an “engine brake” effect suited to driving conditions in relation to a
signal sent from TCM.
4 (overdrive) cancellation signal from ECM to
4 (lock-up).
Input
Output
Closed throttle position signal
Wide open throttle position signal
Engine speed signal Receives signal from ECM.
A/T fluid temperature sensor Detects transmission fluid temperature and sends a signal to TCM.
Revolution sensor Detects output shaft rpm and sends a signal to TCM.
Vehicle speed sensor
Overdrive control switch Sends a signal, which prohibits a shift to D
ASCD control signal
Turbine revolution sensor (power train
revolution sensor)
Stop lamp switch Send the lock-up release signal to the TCM at time of D
Shift solenoid val v e A/B
Line pressure solenoid valve
Torque converter clutch solenoid valve
Overrun clutch solenoid valve
O/D OFF indicator lamp Shows TCM faults, when A/T control components malfunction.
A
B
AT
D
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CAN Communication
ECS00DZM
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during opera tion (not independent). In CA N communication, cont rol units are connected with 2
communicatio n lines ( CAN H lin e, CAN L li ne) al lowi ng a high rate of in forma tio n trans missi on wi th less w iring .
Each control unit transmit s/receives data but selectively reads required data only.
For details, refer to LAN-24, "
Revision: July 2006 2006 Quest
CAN COMMUNICATION" .
AT-35
M
Page 53
OVERALL SYSTEM
[RE4F04B]
Control Mechanism
ECS00DZN
LINE PRESSURE CONTROL
TCM has various line pressure control charac teristics to meet the driving conditions.
An ON-OFF duty signal is sent to the line pressure solenoid valve based on TCM characteristics.
Hydraulic pr es sure o n t h e c lut ch an d br ak e is el ect ro nic al ly co nt rol l ed t hr oug h t h e l ine pr e ssur e so leno id va l ve
to accommodate engine tor q ue. This results in smo oth shift operation.
Normal Control
The line pres sure to thr ottl e open ing char acte rist ics i s set f or s uit able
clutch operatio n.
SCIA3359E
Back-up Control (Engine brake)
If the selector lev er is shifted to L position w hile driving in D4 (O/D)
or D
3 , great driving force is applied to the clutch inside the transmis-
sion. Clutch operating pressure (line pressure) must be increased to
deal with this driving force.
SCIA3360E
During Shift Change
The line pressure is temporari ly reduce d correspon ding to a c hange
in engine torqu e w h en s hi ftin g ge ars (t ha t is , w he n t he s hif t s ol en oi d
valve is switched for clutch operation) to reduce shifting shock.
SAT005J
At Low Fluid Temperature
● Fluid viscosity and frictional characteristics of the clutch facing change with fluid temperature. Clutch
engaging or band-contacting pressure is compensated for, according to fluid temperature, to stabilize
shifting quality.
Revision: July 2006 2006 Quest
AT-36
Page 54
OVERALL SYSTEM
● The line pressure is reduced below 60°C (140°F) to prevent
shifting shock due to low viscosity of automatic transmission
fluid when te mperature is low .
● Line pressure is increased to a maximum irrespective of the
throttle openin g when fluid temperature dro ps to −10°C (14°F).
This pressure rise is adopted to prevent a delay in clutch and
brake operation due to extreme drop of fluid viscosity at low
temperature.
[RE4F04B]
A
B
AT
SAT006J
D
E
F
G
SAT007J
SHIFT CONTROL
The shift is regulated entirely by electronic control to accommodate vehicle speed and varying engine operations. This i s accomplished by e lectrical signals transm itted by the revolution sensor and the ECM (throttle
opening). This results i n improved acceleration performance and fue l economy.
Control of Shift Solenoid Valves A and B
The shift sole noid valve perfor ms simple ON-OFF op eration. When
set to ON, the drain circu it cl os es and pilo t pre ssure is ap pl ied to the
shift valve.
The TCM activa tes shift solenoid valv es A and B according t o signals from the ECM (throttle opening) and revolution sensor to select
the optimum gear p osition on the basis of the shift sc hedule me morized in the TCM.
SAT008J
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Revision: July 2006 2006 Quest
AT-37
Page 55
OVERALL SYSTEM
Relation between shift solenoid valves A and B and gear positions
Shift solenoid valve
A ON (Closed) OFF (Open) OFF (Open) ON (Closed) ON (Closed)
B ON (Closed) ON (Closed) OFF (Open) OFF (Open) ON (Closed)
1 , L1 D2 , L2 D3 D4 (O/D) N-P
D
Control of Shift Valves A and B
Gear position
[RE4F04B]
Pilot pressure generated by the operation of shift solenoid valves A and B is applied to the end face of shift
SAT009J
valves A and B.
The drawing above shows the operation of shift valve B. When the shift solenoid valve is ON, pilot pressure
applied to the end face of the shift valve overcomes spring force, moving the valve upward.
LOCK-UP CONTROL
The torque converter clutch piston in the torque converter is locked to eliminate torque converter slip to
increase powe r transmis sion effici ency. The solenoid valve is contro lled by an ON-O FF duty signal sent from
the TCM. The signal is converted to an oil pressure signal which controls the lock-up piston.
Conditions for Lock-up Operation
When vehicle is driven in 3rd or 4th gear positions, vehicle speed and throttle opening are detected. If the
detected values fall within the lock-up zone memorized in the TCM, lock-up is performed.
Selector lever D position
Overdrive control switch ON OFF
Gear position D
Vehicle speed sensor More than set value
ECM (throttle opening) Less than se t ope ning
Closed throttle position signal OFF
A/T fluid temperature sensor More than 20°C (68°F)
4 D3
Revision: July 2006 2006 Quest
AT-38
Page 56
OVERALL SYSTEM
Torque Converter Clutch Control Valve Control
LOCK-UP CONTROL SYSTEM DIAGRAM
[RE4F04B]
A
B
AT
D
E
F
LOCK-UP RELEASED
SCIA3330E
In the lock-up re leased state, the torqu e converter clutch control valve is set into the unlocked s tate by the
torque conver ter cl utc h s ol en oid a nd the l oc k- up a pp l y p res su re is d rai ne d an d th e to rqu e co nv ert er cl utch p is ton release pressure is generated.
In this way, the torque converter clutch piston is not coupled.
LOCK-UP APPLIED
In the lock-up ap plied state, the torque converter cl utc h c on t rol v al ve i s s et in to th e locked state by th e to rque
converter clutch solenoid and lock-up apply pressure is generated and the torque converter clutch piston
release pressure is drained.
In this way, t he torque converter clutch piston is pressed and coupled.
Smooth Lock-up Control
When shifting f rom the lock -up releas ed st at e to the lock- up ap plied st ate, the cur rent outp ut to the tor que converter clutch sole noid is controlled with the TCM. In this w ay, when shifting to t he lock-up applied s tate, the
torque converter clutch is temporarily set to the half-clutched state to reduce the shock.
HALF-CLUTCHED STATE
The current outpu t from the TCM to the torque convert er clutch solenoid is varied to stea dily increase the
torque converter clutc h so le noid pressure.
In this way, the lock-up apply pressure gradually rises and while the torque converter clutch piston is put into
half-clutched status, the torque converter clutch piston operating pressure is increased and the coupling is
completed smoothly.
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AT-39
Page 57
OVERALL SYSTEM
[RE4F04B]
OVERRUN CLUTCH CONTROL (ENGINE BRAKE CONTROL)
Forward one-way clutch is used to reduce shifting shocks in downshifting operations. This clutch transmits
engine torque to the wheels. However, drive force from the wheels is not transmitted to the engine because
the one-way clutch rotates idle. This me ans the engine brake is not effective.
The overrun clutch operates when the engine brake is needed.
Overrun Clutch Operating Conditi ons
SCIA3361E
Selector lever position Gear position Throttle opening
D position D
L position L
1 , D2 , D3 gear position Less than 3/16
1 , L2 gear position At any position
Overrun Clutch Solenoid Valve Control
The overrun clutch solenoid valve is operated by an ON-OFF signal
transmitted by the TCM to provide overrun clutch control (engine
brake control).
When this solenoid valve is ON, the pilot pressure drain port closes.
When it is OFF, the drain port opens.
During the solenoid valve ON pilot pressure is applied to the end
face of the overrun clutch cont rol valve.
Overrun Clutch Control Valve Operation
When the solenoid valve is ON, pilot pressure is applied to the overrun clutch control va lve. This pushes up the overrun clutch control
valve. The line pressure is then shut off so that the clutch does not
engage.
When the solenoid valve is OFF, pilot pressure is not generated. At
this point, the overrun clutch control valve moves downward by
spring force. As a result, overrun clutch operation pressure is provided by the overrun clutch reducing valve. This causes the overrun
clutch to engage .
In the L position, the overrun clutch control valve remains pushed
down so that the overrun clutch is engaged at all times.
SAT015J
SCIA3362E
Revision: July 2006 2006 Quest
AT-40
Page 58
OVERALL SYSTEM
[RE4F04B]
Control Valve
ECS00DZO
FUNCTION OF CONTROL VALVES
V alve name Function
Pressure regulator valve, plug and sleeve
plug
Pressure modifier valve and sleeve Used as a signal supplementary valve to the pressur e regulator valve. Regulates pres-
Pilot valve Regulates line pressure to maintain a constant pilot pressure level which controls lock-up
Accumulator control valve Regulates accumulator back-pressure to pressu re suit ed to driving conditions.
Manual valve Directs line pressure to oil circuits corresponding to select positions.
Shift valve A Simultaneously switches three oil circuits using output pressure of shift solenoid valve A
Shift valve B Simultaneously switches two oil circuits using output pressure of shift solenoid valve B in
Overrun clutch control valve Switches hydr aul ic circui ts to preven t eng agem ent of the overrun clutch simultaneously
“1” reducing valve Reduces low & reverse brake pressure to dampen engine-brake shock when down-shift-
Overrun clutch reducing valve Reduces oil pressure directed to the over ru n clu tc h and pre vents eng in e-b rak e shock.
Torque converter relief valve Prevents an excessive rise in torque converter pressure.
Torque converter clutch control valve, plug
and sleeve
1-2 accumulator valve and piston Dampens the shock enco unt ere d wh en 2nd gear band servo contracts, and provides
3-2 timing valve Switches the pace that oil pressure is released depending on vehicle speed; maximizes
Shuttle valve Determines if the overrun clutch solenoid valve should control the 3-2 timing valve or the
Cooler check valve A t low sp eeds and with a small load when little heat is generated, saves th e volume of
Regulates oil discharged from the oil pum p to provi de opt i mu m line pre ssur e fo r all driv ing conditions.
sure-modifier pressure (signal press ure) which controls optimum line pressure for all
driving conditions.
mechanism, overrun clutch, shift timing.
Hydraulic pressure drains when the shif t lever is in Neut ral.
to meet driving conditions (vehicle spe ed, throt tle open in g, etc. ).
Provides automatic downshifting and up-shifting (1st → 2nd → 3rd → 4th gears/4th →
3rd → 2nd → 1st gears) in combinat i on w ith shif t valve B.
relation to driving conditions (vehicle speed, throttle opening, etc.).
Provides automatic downshifting and up-shifting (1st → 2nd → 3rd → 4th gears/4th →
3rd → 2nd → 1st gears) in combinat i on w ith shif t valve A.
with application of the brake band in D
engages during D
ing from the L position L
In 1st and 2nd positions, line pressure acts on the overrun clutch reducing valve to
increase the pressure-regulating poi nt , with resultant engi ne br ake capability.
Activates or inactivates the lock-up function.
Also provides smooth lock-up through transi ent application and release of the lock-up
system.
smooth shifting.
the high clutch release timing, and allows for sof t down shifting.
overrun clutch control valve and switches between the two.
cooler flow, and stores the oil pressure for lock up.
4 .)
2 to L1 .
4 . (Interlocking occurs if the overrun clutch
A
B
AT
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AT-41
Page 59
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
[RE4F04B]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION PFP:00000
Introduction
ECS00DZP
The A/T system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (OBD-II) performed by the TCM (transmission
control module) in combina tion with the EC M. The mal function is in dicated by t he MIL (malfu nction indica tor
lamp) and is stored as a DTC in the ECM me m ory but no t the TCM me m ory.
The second is the TC M original self-diagnos is indicated by the O/D OFF in dicator lamp. The malfun ction is
stored in the TCM memory. The detected items are overlapped with OBD-II self-diagnostic items. For details,
refer to AT-47, "
OBD-II Function for A/T System
SELF-DIAGNOSTIC RESULT TEST MODE" .
ECS00DZQ
The ECM provides emission-related on board diagnostic (OBD-II) functions for the A/T system. One function
is to receive a signal from the TCM used with OBD-related parts of the A/T system. The signal is sent to the
ECM when a mal function occurs in the corre sponding OBD-related part. The other function is to ind icate a
diagnostic result by means of the MIL (malfunction indicator lamp) on the instrument panel. Sensors, switches
and solenoid valves are used as sensing elements.
The MIL automatically illuminates in One or Two Trip Detection Logic when a malfunction is sensed in relation
to A/T system parts.
One or Two Trip Detection Logic of OBD-II
ECS00DZR
ONE TRIP DETECTION LOGIC
If a malfunction is sensed during the first test drive, the MIL w ill illuminate and the malfunction will be stored in
the ECM memory as a DTC. The TCM is no t provided with such a memory function.
TWO TRIP DETECTION LOGIC
When a malfuncti on is sensed during the fi rst test drive, it is stored in the ECM memory as a 1st trip DT C
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MIL will not illuminate. — First Trip
If the same malf unction as that experien ced during the first test drive is sense d during the second te st drive,
the MIL will illuminate. — Second Trip
A/T-related parts for which the MIL illuminates during the first or second test drive are listed below.
Items
Shift solenoid valve A — DTC: P0750 X
Shift solenoid valve B — DTC: P0755 X
Accelerator pedal position (APP) sensor — DTC: P1705 X
Except above X
One trip de tection Two trip detectio n
MIL
The “trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation.
OBD-II Diagnostic Trouble Code (DTC)
ECS00DZS
HOW TO READ DTC AND 1ST TRIP DTC
DTC and 1st trip DTC can be read by the following methods.
( With CONSULT-II or GST) CONSULT-II or GST (Generic Scan Tool) Examples: P0705, P0710,
P0720, P0725, etc.
These DTCs are prescribed by SAE J2012.
(CONSULT-II also displays the malfunctioning component or system.)
● 1st trip DTC No. is the same as DTC No.
● Outpu t of the diagnos tic trouble c ode indica tes that the in dicated circuit has a malfu nction. How -
ever, in case of the Mode II and GST they do not indicate whether the malfunction is still occurring
or occurred in the past and returned to normal.
CONSULT-II can identify them as shown below. Therefore, using CONSULT-II (if available) is recommended.
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A sample of CONSULT-II display for DTC and 1st trip DTC is shown
in the following page. DTC or 1st trip DTC o f a malfunction is displayed in “SELF DIAGNOSIS” mode for “ENGINE” with CONSULTII. Time data indicates how many times the vehicle was driven after
the last detection of a DTC.
If the DTC is being detected currently, the time data will be “0”.
[RE4F04B]
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BCIA0030E
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If a 1st trip DTC is stored in the ECM, the time data will be “1t”.
SAT016K
Freeze Frame Data and 1st Trip Freeze Frame Data
The ECM has a me mory function, whic h stores the driving c ondition such as fuel s ystem status, calcul ated
load value, engin e coolant temperature, short te rm fuel trim, long term fuel trim, engin e speed and vehicle
speed at the moment the ECM detects a malfunction.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data,
and the data, s tored to gether with t he DTC data, a re call ed freez e fram e data an d disp layed on CO NSULT-II
or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
details, refer to EC-56, "
Only one set of freeze frame data (either 1st trip freeze frame data of freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze fr ame data and it is update d each time a different 1st trip DTC is det ected. However, once
freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. R eme mber, only one set of free ze fra me da ta can be stored in the ECM . The ECM has th e following pri orities to up date the data.
Priority Items
1
Freeze frame data
2 Except the above items (Includes A/T relat ed item s)
3 1st trip freeze frame data
FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA" .
Misfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
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Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM memory is erased.
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[RE4F04B]
HOW TO ERASE DTC
The diagnostic trouble code can be erased by CONSULT-II, GST or ECM DIAGNOSTIC TEST MODE as
described following.
● If the battery terminal is disconnected, the diagnostic trouble code will be lost within 24 hours.
● When you erase the DTC, usi n g CON SU LT-II or GST is ea sier a nd q uic ker than switchin g t he m od e
selector on the ECM.
The following em ission-related diagnostic in formation is cleared from the ECM me mory when erasing DTC
related to OBD-II. For details, refer to EC-51, "
● Diagnostic trouble codes (DTC)
● 1st trip diagnostic trouble codes (1st trip DTC)
● Freeze frame data
● 1st trip freeze frame data
● System readiness test (SRT) codes
● Test val ues
HOW TO ERASE DTC (WITH CONSULT-II)
● If a DTC is displayed for both ECM and TCM, it needs to be erased for both ECM and TCM.
1. If the ign iti on s witc h stays ON aft er re pair work , b e su re to turn ignition s w itc h OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Turn CONSULT-II “ON” and touch “A/T”.
3. Touch “SELF-DIAG RESULTS”.
4. Touch “ERASE”. (The DTC in the TCM will be erased.) Then touch “BACK” twice.
5. Touch “ENGINE”.
6. Touch “SELF DIAGNOSIS”.
7. Touch “ERASE”. (The DTC in the ECM will be erased.)
Emission-related Diagnostic Information" .
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[RE4F04B]
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HOW TO ERASE DTC (WITH GST)
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Perform “TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)”. Refer to AT-58, "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" . (The engine warm-up step can be skipped when performing the
diagnosis only to erase the DTC.)
3. Select Mode 4 with Generic Scan Tool (GST). For details, refer to EC-134, "
Generic Scan Tool (GST)
Function" .
HOW TO ERASE DTC (NO TOOLS)
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Perform “TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)”. Refer to AT-58, "
NOSTIC PROCEDURE (NO TOOLS)" . (The engine warm-up step can be skipped when performing the
diagnosis only to erase the DTC.)
3. Perform “OBD-II SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)”. Refer to EC-64, "
.
TCM SELF-DIAG-
How to Erase DTC"
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[RE4F04B]
Malfunction Indicator Lamp (MIL)
1. The malfunction indicator lamp will light up when the ignition
switch is turned ON without the engine running. This is for
checking the lamp.
● If the malfunction indicator lamp does not light up, refer to DI-
21, "WARNING LAMPS" .
[Or see EC-726, "
MIL AND DATA LINK CONNECTOR" .]
2. When the engine is started, the malfunction indicator lamp
should go off.
If the lamp remains on, the on board diagnostic system has
detected an emission-related (OBD-II) malfunction. For details,
refer to EC-51, "
EMISSION-RELATED DIAGNOSTIC INFOR-
MATION ITEMS" .
CONSULT-II Function (A/T)
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
A/T diagnostic mode Description
Supports inspections and adjustments. Commands are transmitted to the TCM for setting the status
WORK SUPPORT
SELF-DIAG RESULTS Di splays TCM self-diagnosis results.
DATA MONITOR Displays TCM input/ out put data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
FUNCTION TEST Conducted by CONSULT-II instead of a technician to determine whether each system is "OK" or "NG".
ECU PART NUMBER TCM part number can be read.
suitable for required operation, input/output si gnals ar e received from the TCM and received data is
displayed.
ECS00DZT
SAT964I
ECS00DZU
After performing “SELF -DIAGNOSTIC place check marks for results on the “Diag nostic Worksheet”, AT-64,
"DIAGNOSTIC WORKSHEET" . Reference pages are provide following the items.
SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
● For details, refer to the separate “CONSULT-II Operations Manual”.
1. Touch on CONSULT-II, touch “START (NISSAN BASED
VHCL)”, and touch “ENGINE” for OBD-II detected items or touch
“A/T” for TCM self-diagnosis.
If “ENGINE” or “A/T” is not displaye d, go to GI-38, "
Data Link Connector (DLC) Circuit" .
CONSULT-II
BCIA0030E
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2. Touch “SELF DIAG RESULTS”.
Display shows malfunction experienced since the last erasing
operation.
CONSULT-II performs “Real Time Diagnosis”.
Also, any malfunction detected while in this mode will be displayed at real time.
SELF-DIAGNOSTIC RESULT TEST MODE
Detected items
(Screen terms for CONSULT-II, “SELF
DIAGNOSIS” test mode)
“A/T”“ENGINE”
Park/neutral position (PNP) switch circuit
— PNP SW/CIRC
Revolution sensor
VHCL SPEED SEN·A/T
Vehicle speed signal from meter
VHCL SPEED
SEN·MTR
A/T 1st gear function
A/T 1ST GR FNCTN
A/T 2rd gear function
A/T 2ND GR FNCTN
A/T 3rd gear function
A/T 3RD GR FNCTN
A/T 4th gear function
A/T 4TH GR FNCTN
A/T TCC S/V function (lock-up)
A/T TCC S/V FNCTN
Shift solenoid valve A
SHIFT SOLENOID/V A SFT SOL A/CIRC
Shift solenoid valve B
SHIFT SOLENOID/V B SFT SOL B/CIRC
Overrun clutch solenoid valve
OVERRUN CLUTCH S/VO/R CLUCH SOL/
T/C clutch solenoid valve
T/C CLUTCH SOL/V
VEH SPD SEN/
CIR AT
—
A/T 1ST GR
FNCTN
A/T 2ND GR
FNCTN
A/T 3RD GR
FNCTN
A/T 4TH GR
FNCTN
A/T TCC S/V
FNCTN
CIRC
TCC SOLENOID/
CIRC
Malfunction is detected when...
● TCM does not receive the cor re ct
voltage signal (based on the gear
position) from the switch.
● TCM does not receive the pro per
voltage signal from the sensor.
● TCM does not receive the pro per
voltage signal from the combination meter.
● A/T cannot be shifted to the 1st
gear position even if electrical circuit is good.
● A/T cannot be shifted to the 2nd
gear position even if electrical circuit is good.
● A/T cannot be shifted to the 3rd
gear position even if electrical circuit is good.
● A/T cannot be shifted to the 4th
gear position even if electrical circuit is good.
● A/T cannot perform lock-up even if
electrical circuit is good.
● TCM detects an improper voltage
drop when it tries to operate the
solenoid valve.
● TCM detects an improper voltage
drop when it tries to operate the
solenoid valve.
● TCM detects an improper voltage
drop when it tries to operate the
solenoid valve.
● TCM detects an improper voltage
drop when it tries to operate the
solenoid valve.
[RE4F04B]
TCM self-diagnosis OBD-II (DTC)
Available by malfunc-
Available by O/D OFF
indicator lamp
— P0 705
XP0720
X —
— P0731*1
— P0732*1
— P0733*1
— P0734*1
— P0744*1
XP0750
X P0755
XP1760
XP0740
tion indicator lamp*2,
“ENGINE” on
CONSULT-II or GST
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[RE4F04B]
Detected items
(Screen terms for CONSULT -II, “SELF
DIAGNOSIS” test mode)
“A/T”“ENGINE”
Line pressure solenoid valve
LINE PRESSURE S/V
Accelerator pedal position (APP) sensor
THROTTLE POSI SEN TP/SEN/CIRC A/T
Engine speed signal
ENGINE SPEED SIG
A/T fluid temperature sensor
BATT/FLUID TEM P
SEN
CAN communication*3
CAN COMM CIRCUIT
Turbine revolution sensor
(power train revolution sensor
TURBINE REV —
TCM (RAM)
CONTROL UNIT
(RAM)
TCM (ROM)
CONTROL UNIT
(ROM)
TCM (EEP RO M)
CONT UNIT(EEP
ROM)
Initial start
INITIAL START —
No failure
(NO SELF DIAGNOSTIC FAILURE INDICATED FURTHER TESTING MAY BE
REQUIRED**)
X: Applicable
−: Not applicable
*1: These malfunctions cannot be displayed by MIL if another malfunction is assigned to MIL.
*2: Refer to EC-66, "
*3: If malfunction is detected in multiple sys te ms including CAN communication line, CAN comm uni cation line trouble diagnosis shal l be
performed first.
L/PRESS SOL/
CIRC
ENGINE SPEED
SIG
ATF TEMP SEN/
CIRC
CAN COMM CIRCUIT
—
—
—
Malfunction Indicator Lamp (MIL)" .
Malfunction is detected when...
● TCM detects an improper voltage
drop when it tries to operate the
solenoid valve.
● TCM receives an excessi vely low
or high voltage from this sensor
● TCM does not receive the prop er
voltage signal from the ECM.
● TCM receives an excessi vely low
or high voltage from the sensor.
● When malfunction is detected in
CAN communication line.
● TCM does not receive proper volt-
age signal from sensor
● TCM memory (RAM) is malfunc-
tioning
● TCM memory (ROM) is malfunc-
tioning
● TCM memory (EEP ROM) is mal-
functioning.
● This is not a malfunction message
(Whenever shutting off a power
supply to the TCM, this message
appears on the screen.)
● No failure has been dete ct ed. X X
TCM self-diagnosis OBD - II (DTC)
Available by malfunc-
Available by O/D OFF
indicator lamp
X P0745
X P1705
X P0725
X P0710
X U1000
X —
——
——
——
X —
tion indicator lamp*2,
“ENGINE” on
CONSULT-II or GST
DATA MONITOR MODE (A/T)
NOTICE:
1. The CONSULT-II electri cal ly dis play s shif t tim ing an d lock -up t imin g (that is, op erat ion ti ming of eac h solenoid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, me chan ical parts (exc ept s olen oids , sens ors, e tc .) may be ma lfunc tion ing. C hec k me chan ical
parts using applicable diagnostic procedures.
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[RE4F04B]
2. Shift sc hedu le (wh ich impl ie s gear po sitio n) disp laye d on CON SULT-II and that indicated in Service Manual may differ slightly. This occurs because of the following reasons:
– Actual shift sche du le ha s mo re or les s tol era nc e or allow a nc e,
– Shift schedule indicated in Service Manual refers to the point where shifts start, and
– Gear position displayed on CONSULT-II indicates the point where shifts are completed.
3. Shift solenoid valve “A” or “B” is displayed on CONSULT-II at the start of shifting. Gear position is displayed upon completion of shift ing (which is computed by TCM).
Selection monitor item
Item Display
Vehicle speed sensor 1
(A/T)
(Revolution sensor)
Vehicle speed sensor 2
(Meter)
Accelerator pedal position (APP) sensor
A/T fluid temperature
sensor
Battery voltage BATTERY
Engine speed ENG INE
Turbine revolution sensor (power train revolution sensor)
Overdrive control switch OVERDRIVE
PN position (PNP) switch PN POSI SW
R position switch R POSITION
VHCL/S SE-A/
T
[km/h] or [mph] X —
VHCL/S SEMTR
[km/h] or [mph]
THRTL POS
SEN
[V]
FLUID TEMP
SE
[V]
VOLT
[V]
SPEED
[rpm]
TURBINE REV
[rpm]
SW
[ON/OFF]
[ON/OFF]
SW
[ON/OFF]
TCM
INPUT
SIG-
NALS
X —
X —
X —
X —
XX
X —
X —
X —
X —
MAIN
SIG-
NALS
SELEC-
TION
FROM
MENU
Description Remarks
● Vehicle speed com-
puted from signal of
revolution sensor is
displayed.
● Vehicle speed com-
puted from signal of
vehicle speed sensor is
displayed.
● Accelerator pedal posi-
tion (APP) sensor signal voltage is displayed
● A/T fluid temperature
sensor signal voltage is
displayed.
● Signal voltage lowers
as fluid temperature
rises.
● Source voltage of TCM
is displayed.
● Engine speed, com-
puted from engine
speed signal, is displayed.
● Checks changing
speed then performs
oil pressure control and
torque down control
● ON/OFF state com-
puted from signal of
overdrive control
switch, is displayed.
● ON/OFF state com-
puted from signal of
PN position switch, is
displayed.
● ON/OFF state com-
puted from signal of R
position switch, is displayed.
● When racing engine in
● Vehicle speed display
● Engine speed display
● Error may occur under
N or P with vehicle stationary, CONSULT-II
data may not indicate
0 km/h (0 mph).
may not be accurate
under approx. 10 km/h
(6 mph). It may not
indicate 0 km/h (0
mph) when vehicle is
stationary.
may not be accurate
under approx. 800
rpm. It may not indicate 0 rpm even when
engine is not running.
approx. 800 rpm and
will not indicate 0 rpm
even if engine is not
running.
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Item Display
D position switch D POSITION
SW
[ON/OFF]
L position switch 2 POSITION
SW
[ON/OFF]
1 position switch 1 POSITION
SW
[ON/OFF]
ASCD cruise signal AS CD-
CRUISE
[ON/OFF] X —
ASCD OD cut signal ASCD-OD
CUT
[ON/OFF]
Kickdown switch KICKDOWN
SW
[ON/OFF]
A/T mode switch POWER
SHIFT SW
[ON/OFF]
Closed throttle position
signal
Wide open throttle position signal
Shift solenoid valve A *SHIFT S/V A
Shift solenoid valve B *SHIFT S/V B
Overrun clutch solenoid
valve
A/T mode switch HOLD SW
Stop lamp switch BRAKE SW
CLOSED THL/
SW
[ON/OFF]
W/O THRL/PSW
[ON/OFF] X —
[ON/OFF]
[ON/OFF]
*OVRRUN/C
S/V
[ON/OFF]
[ON/OFF]
[ON/OFF]
Selection monitor item
TCM
INPUT
SIG-
NALS
MAIN
SIG-
NALS
X —
X —
X —
X —
X —
X —
X —
——
——
——
X —
X —
SELEC-
TION
FROM
MENU
Description Remarks
● ON/OFF state com-
puted from signal of D
position switch, is displayed.
● ON/OFF status, com-
puted from signal of L
(2nd) position switch, is
displayed.
● ON/OFF status, com-
● This is displayed even
puted from signal of 1st
position switch, is displayed.
● Status of ASCD cruise
signal is displayed.
ON ... Cruising state
OFF ... Normal running state
● Status of ASCD OD
release signal is displayed.
ON ... OD released
OFF ... OD not
released
● ON/OFF status, com-
● This is displayed even
puted from signal of
kickdown switch, is displayed.
● Not mounted but dis-
● ON/OFF status, com-
● This means closed
puted from signal of
closed throttle position
signal, is displayed.
● ON/OFF status, com-
● This means wide open
puted from signal of
wide open throttle position signal, is displayed.
● Displays status of
check signal (reinput
signal) for TCM control
signal output. Remains
unchanged when solenoid valves are open or
shorted.
● Not mounted but dis-
● ON/OFF status is dis-
played.
ON ... Brake pedal is
depressed.
OFF ... Brake pedal is
released.
[RE4F04B]
when no 1st position
switch is equipped.
when no kickdown
switch is equipped.
played
throttle position signal
input via CAN communication line.
throttle position signal
input via CAN communication line.
played
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
[RE4F04B]
Item Display
Gear position GEAR
Selector lever position SLCT LVR
POSI
Vehicle speed VEHICLE
SPEED
[km/h] or [mph]
Throttle position THROTTLE
POSI
[/8]
Line pressure duty LINE PRES
DTY
[%] — X
Torque converter clutch
solenoid valve duty
TCC S/V
DUTY
[%]
Shift solenoid valve A SHIFT S/V A
[ON/OFF]
Shift solenoid valve B SHIFT S/V B
[ON/OFF]
Overrun clutch solenoid
valve
OVERRUN/C
S/V
[ON/OFF] — X
Self-diagnosis display
lamp (O/D O FF indicat o r
lamp)
Torque converter slip
ratio
Torque converter slip
speed
SELF-D DP
LMP
[ON/OFF]
TC SLIP
RATIO [0.000]
TC SLIP
SPEED
[rpm] ——
Voltage Voltage
[V] ——
Selection monitor item
TCM
INPUT
SIG-
NALS
MAIN
SIG-
NALS
— X
— X
— X
— X
— X
— X
— X
— X
——
SELEC-
TION
FROM
MENU
Description Remarks
● Gear position data,
used for computation
by TCM, is displayed.
● Selec tor lever p o s ition
● A specific value used
data, used for computation by TCM, is displayed.
● Vehicle speed data,
used for computation
by TCM, is displayed.
● Throttle position data,
● A specific value used
used for computation
by TCM, is displayed.
● Control value of line
pressure solenoid
valve, computed by
TCM from each input
signal, is displayed.
● Control value of torque
converter clutch solenoid valve, computed
by TCM from each
input signal, is displayed.
● Control value of shift
● Control value of sole-
solenoid valve A, computed by TCM from
each input signal, is
displayed.
● Control value of shift
solenoid valve B, computed by TCM from
each input signal, is
displayed.
● Control value of over-
run clutch solenoid
valve computed by
TCM from each input
signal is displayed.
● Control status of O/D
OFF indicator lamp is
displayed.
● Ratio of engine revolu-
tion to input shaft revolution of torque
converter.
● Difference in revolu-
● Display does not indi-
tion between input
shaft revolution and
torque converter input
shaft revolution.
● Value measured by
voltage probe is displayed.
for control is displayed
if fail-safe is activated
due to error.
for control is displayed
if fail-safe is activated
due to error.
noid is displayed even
if solenoid circuit is disconnected.
The OFF signal is displayed if solenoid circuit is sh o rted.
cate engine is stopped
even if 0 rpm — this is
not a malfunction.
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Item Display
Frequency Frequency [Hz]
Duty cycle (high) DUTY-HI
[%]
Duty cycle (low) DUTY-LOW
[%]
Plus width (high) PLS WIDTH-HI
[msec]
Plus width (low) PLS WIDTH-
LOW
[msec]
X: Applicable
—: Not applicable
: Option
Selection monitor item
TCM
INPUT
SIG-
NALS
——
——
——
——
——
MAIN
SIG-
NALS
SELEC-
TION
FROM
MENU
[RE4F04B]
Description Remarks
● Value measured by
pulse probe is displayed. If measurement is impossible, "#"
sign is displayed. "#"
sign is also displayed
at the final data value
until the measurement
result is obtained.
● Duty cycle value for
measurement probe is
displayed.
● Measured pulse width
of measurement probe
is displayed.
DTC WORK SUPPORT MODE WITH CONSULT-II
CONSULT-II Setting Procedure
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
● For d etails, re fer t o th e separat e “CONSULT-II Operations Man-
ual”.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector, which is located in instrument lower panel on
driver side.
BBIA0336E
3. Turn ignition switch to ON position. (Do not start engine.)
4. Touch “START (NISSAN BASED VHCL)”.
BCIA0029E
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5. Touch “A/T”.
If “A/T” is not indicated, go to GI-38, "
Connector (DLC) Circuit" .
6. Touch “DTC WORK SUPPORT”.
CONSULT-II Data Link
[RE4F04B]
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7. Touch select item menu (1ST, 2ND, etc.).
8. Touch “START”.
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
9. Perform driving test according to “DTC CONFIRMATION PROCEDURE” in “TROUBLE DIAGNOSIS FOR DTC”.
● When testing conditions are satisfied, CONSULT-II screen
changes from “OUT OF CONDITION” to “TESTING”.
[RE4F04B]
SAT019K
10. Stop vehicle. If “NG” appears on the screen, malfunction may
exist. Go to “DIAGNOSTIC PROCEDURE”.
SAT591J
SAT592J
SAT593J
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AT-54
Page 72
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
11. Perfo rm te st dr ive t o ch eck gear sh ift fe eling in a cco rdanc e with
instructions displayed.
12. Touch “YES” or “NO”.
[RE4F04B]
A
B
AT
SAT594J
D
E
F
G
SAT595J
13. CONSULT-II procedure ended.
If “NG” appears on the scene, a malfunction may exist. Go to
“DIAGNOSTIC PROCEDURE”.
SAT596J
SAT593J
H
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AT-55
Page 73
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
DTC WORK SUPPORT MODE
DTC work support item Description Check item
1ST GR FNCTN P0731
2ND GR FNCTN P0732
3RD GR FNCTN P0733
4TH GR FNCTN P0734
TCC S/V FNCTN P0744
Following items for “A/T 1st gear function (P0731)” can be confirmed.
● Self-diagnosis status (whether the diagnosis is being conducted
or not)
● Self-diagnosis result (OK or NG)
Following items for “A/T 2nd gear function (P0732)” can be confirmed.
● Self-diagnosis status (whether the diagnosis is being conducted
or not)
● Self-diagnosis result (OK or NG)
Following items for “A/T 3rd gear function (P0733)” can be confirmed.
● Self-diagnosis status (whether the diagnosis is being conducted
or not)
● Self-diagnosis result (OK or NG)
Following items for “A/T 4th gear function (P0734)” can be confirmed.
● Self-diagnosis status (whether the diagnosis is being conducted
or not)
● Self-diagnosis result (OK or NG)
Following items for “A/T TCC S/V function (lock-up) (P0744)” can
be confirmed.
● Self-diagnosis status (whether the diagnosis is being conducted
or not)
● Self-diagnosis result (OK or NG)
● Shift solenoid valve A
● Shift solenoid valve B
● Each clutch
● Hydraulic control circuit
● Shift solenoid valve B
● Each clutch
● Hydraulic control circuit
● Shift solenoid valve A
● Each clutch
● Hydraulic control circuit
● Shift solenoid valve A
● Shift solenoid valve B
● Overrun clutc h sol enoi d val ve
● Line pressure sole noid val ve
● Each clutch
● Hydraulic control circuit
● Torque converter clutch sole-
noid valve
● Each clutch
● Hydraulic control circuit
[RE4F04B]
CAN DIAGNOSTIC SUPPORT MONITOR
CONSULT-II Setting Procedure
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
● For d etails, re fer t o th e separat e “CONSULT-II Operations Man-
ual”.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector, which is located in instrument lower panel on
driver side.
BBIA0336E
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AT-56
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
3. Turn ignition switch to ON position. (Do not start engine.)
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “A/T”.
If “A/T” is not indicated, go to GI-38, "
Connector (DLC) Circuit" .
CONSULT-II Data Link
[RE4F04B]
A
B
AT
BCIA0029E
D
E
F
G
BCIA0030E
6. Touch “CAN DIAG SUPPORT MNTR”.
BCIA0031E
H
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AT-57
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
[RE4F04B]
Diagnostic Procedure Without CONSULT-II
OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)
Refer to EC-134, "Generic Scan Tool (GST) Function" .
OBD-II SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Refer to EC-66, "Malfunction Indicator Lamp (MIL)" .
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
1. CHECK O/D OFF INDICATOR LAMP
1. Move selector lever to P position.
Start engine and warm it up to norm al e ngine opera ting temp erature.
2. Turn ignition switch to OFF position.
3. Wait 5 seconds.
4. Turn ignition switch to ON position. (Do not start engine.)
5. Does O/D OFF indicator lamp come on for about 2 seconds?
Yes or No
Yes >> GO TO 2.
No >> Stop procedure. Perform AT-209, "
Lamp Does Not Come On" before proceeding.
O/D OFF Indicator
ECS00DZV
BCIA0002E
2. JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch to OFF position.
2. Push and hold shift lock release button.
3. Move selector l ever to D position.
4. Push and hold ov erd riv e co ntrol switch to ON position .
5. Turn ignition switch to ON position. (Do not start engine.)
Wait more than 2seconds after turning ignition switch to ON.
>> GO TO 3.
BCIA0003E
SCIA3532E
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AT-58
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
[RE4F04B]
3. JUDGEMENT PROCEDURE STEP 2
1. Move selector lever to L position.
2. Rele as e ov erd riv e co ntrol switch to OFF positi on .
(O/D OFF indicator lamp: O N)
>> GO TO 4.
4. JUDGEMENT PROCEDURE STEP 3
1. Move selector lever to D position.
2. Push and hold overdr ive control switch to ON position.
(O/D OFF indicator lamp: OFF)
>> GO TO 5.
A
B
AT
D
SCIA3534E
E
F
G
H
5. JUDGEMENT PROCEDURE STEP 4
1. Depress accelerator pedal fully and release it.
>> GO TO 6.
6. CHECK SELF-DIAGNOSTIC CODE
Check O/D OFF indicator lamp.
Refer to AT-60, "
>> DIAGNOSIS END
JUDGEMENT OF SELF-DIAGNOSIS CODE" .
SCIA3537E
I
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SAT981F
M
BCIA0003E
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AT-59
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
JUDGEMENT OF SELF-DIAGNOSIS CODE
O/D OFF indicator lamp:
All judgement flickers are the same.
SCIA3387E SCIA3388E
All circuits that can be confirmed by self-diagnos is are O K.
2nd judgement flicker is longer than others.
[RE4F04B]
1st judgement flicker is longer than others.
Revolution sensor circuit is short-circui te d or disconnected.
Þ Go to AT-119, "
(REVOLUTION SENSOR)" .
3rd judgement flicker is longer than others.
DTC P0720 VEHICLE SPEED SENSOR·A/T
SCIA3389E SCIA3390E
Vehicle speed signal circuit is short-circuited or disconnected.
Þ Go to AT-192, "
4th judgement flicker is longer than others.
Shift solenoid valve A circuit is short-circuited or disconnected.
Þ Go to AT-169, "
DTC VEHICLE SPEED SENSOR MTR" .
SCIA3391E SCIA3392E
DTC P0750 SHIFT SOLENOID VALVE A" .
Accelerator pedal position (APP) sensor circuit is short-circuited
or disconnected.
Þ Go to AT-179, "
[ACCELERA TOR PEDAL POSITION (APP) SENSOR]" .
5th judgement flicker is longer than others.
Shift solenoid valve B circuit is short-circuited or disco nnected.
Þ Go to AT-174, "
DTC P1705 THROTTLE POSITION SENSOR
DTC P0755 SHIFT SOLENOID VALVE B" .
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AT-60
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
[RE4F04B]
O/D OFF indicator lamp:
6th judgement flicker is longer than others.
SCIA3393E SCIA3394E
Overrun clutch solenoid valve circuit is shor t-ci rc ui ted or disconnected.
Þ Go to AT-181, "
VALVE" .
8th judgement flicker is longer than others.
DTC P1760 OVERRUN CLUTCH SOLENOID
7th judgement flicker is longer than others.
Torque converter clutch solenoid valve circuit is short -circ uite d or
disconnected.
Þ Go to AT-150, "
SOLENOID VALVE" .
9th judgement flicker is longer than others.
DTC P0740 TORQUE CONVERTER CLUTCH
A
B
AT
D
E
F
G
H
SCIA3395E SCIA3396E
A/T fluid temperature sensor is disconnected or TCM power
source circuit is damaged.
Þ Go to A T-186, "
TEMP SENSOR CIRCUIT AND TCM POWER SOURCE)" .
10th judgement flicker is longer than others.
Turbine revolution sensor (power train revolution sensor) circuit is
short-circuited or disconnected.
Þ Go to A T-197, "
DTC BATT/FLUID TEMP SEN (A/T FLUID
SCIA3397E SCIA3398E
DTC TURBINE REVOLUTION SENSOR" .
Engine speed signal circuit is short-circuited or disconnected.
Þ Go to AT -124, "DTC P0725 ENGINE SPEED SIGNAL" .
11th judgement flicker is longer than others.
Line pressure solenoid valve circuit is short-circuited or disconnected.
Þ Go to AT-163, "
VALVE" .
DTC P0745 LINE PRESSURE SOLENOID
I
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AT-61
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
O/D OFF indicator lamp:
12th judgement flicker is longer than other s.
SCIA3399E SCIA3400E
CAN communication line is damaged.
Þ Go to AT-104, "DTC U1000 CAN COMMUNICATION LINE" .
Flickers as shown below.
[RE4F04B]
Lamp does not blink.
Park/neutral position (PNP) switch, ove rdri ve cont r ol swit ch,
closed throttle position signal or wide-open throttle position signal
circuit is disconnected or TCM is damaged.
Þ Go to AT-236, "TCM Self-diagnosis Does Not Activate" .
SCIA3401E
Battery power is low.
Battery has been disconnected for a long t ime.
Battery is connected conversely.
(When reconnecting TCM connec tors.—This is not a problem.)
t1 = 2.5 seconds t2 = 2.0 seconds t3 = 1.0 second t4 = 1.0 second
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AT-62
Page 80
TROUBLE DIAGNOSIS - INTRODUCTION
[RE4F04B]
TROUBLE DIAGNOSIS - INTRODUCTION PF P:00000
Introduction
The TCM receives a signal from the vehicle speed sensor, ECM
(throttle openin g) or park/n eutral po sitio n (PNP) sw itch and p rovid es
shift control or lock-up control via A/T solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing el ements used with the OBD-rel ated parts of the
A/T system for m alfunction-diagno stic purposes. The TCM is capable of diagnosing malfunctioning parts while the ECM can store malfunctions in its memory.
Input and output signals must always be correct and stable in the
operation of th e A/T sy stem. T he A/T system m ust be in good oper ating condition and be free of valve seizure, solenoid valve malfunction, etc.
It is much more difficult to diagnos e a problem th at occurs interm ittently rather than continuously. Most intermittent problems are
caused by poor electric connections or improper wiring. In this case,
careful checking of sus pect ed circui ts may he lp prev ent th e repla cement of good parts.
A visual che ck only, may not find the ca use o f the p roblems . A road
test with CONSU LT-II (or GST) or a circu it tester connected sh ould
be performed. Follow the “Work Flow”. Refer to AT-67, "
Work Flow" .
ECS00DZW
SAT631IA
A
B
AT
D
E
F
G
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a drive ability complaint. The customer can supply g ood inform ation about s uch probl ems, espec ially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “DIAGNOSTIC WORKSHEET” like the
example on page AT-65
should be used.
Start your diagnosis by looking for “conventional” problems first. This
will help troubles hoot drivea bility proble ms on an electr onically con trolled engine vehicle.
Also check related Serv ice bulletins for infor m ation.
SAT632I
SEF234G
H
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AT-63
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TROUBLE DIAGNOSIS - INTRODUCTION
DIAGNOSTIC WORKSHEET
Information from Customer
KEY POINTS
WHAT ........ Vehicle & A/T model
WHEN ........ Date, Frequencies
WHERE ..... Road conditions
HOW .......... Operating conditions, Symptoms
Customer name MR/MS Model & Year VIN
Trans. model Engine Mileage
Incident Date Manuf. Date In Service Date
Frequency ❏ Continuous ❏ Intermi ttent ( times a day)
Symptoms ❏ Vehicle does not move. (❏ Any position ❏ Particular posi tion)
❏ No up-shift (❏ 1st → 2nd ❏ 2nd → 3rd ❏ 3r d → 4th)
❏ No down-shift (❏ 4th → 3rd ❏ 3rd → 2nd ❏ 2nd → 1st)
❏ Lockup malfunction
❏ Shift point too high or too low.
❏ Shift shock or slip (❏ N → D ❏ Lockup ❏ Any drive position)
❏ Noise or vibration
❏ No kickdown
❏ No pattern select
❏ Others
()
O/D OFF indicator lamp Blinks for about 8 seconds.
❏ Continuously lit ❏ Not lit
Malfunction indicator lamp (MIL) ❏ Continuously lit ❏ Not lit
[RE4F04B]
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AT-64
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TROUBLE DIAGNOSIS - INTRODUCTION
[RE4F04B]
Diagnostic Worksheet
1. ❏ Read the Fail-safe and listen to customer complaints. AT-12
2. ❏ CHECK A/T FLUID AT-69
❏ Leakage (Follow specified proce dur e)
❏ Fluid condition
❏ Fluid level
3. ❏ Perform STALL TEST and PRESSURE TEST. AT-70
❏ Stall test — Mark possible damaged components/others.
❏ Torque converter one-way clutch
❏ Reverse clutch
❏ Forward clutch
❏ Overrun clutch
❏ Forward one-way clutch
❏ Line pressure test — Suspected parts:
4. ❏ Perform all ROAD TEST and mark required procedures. AT-74
4-1. Check before engine is started. AT-76
❏ O/D OFF Indicator Lamp Does No t Come On, AT-209
❏ SELF-DIAGNOSTIC PROCEDURE - Mark detected items.
❏ Park/neutral position (PNP) switch, AT-107
❏ A/T fluid temperature sensor, AT-113
❏ Vehicle speed sensor·A/T (Revolution sensor), AT-119
❏ Engine speed signal, AT-124
❏ Turbine revolution sensor (power train revolution sensor) , AT-197
❏ Torque converter clutch solenoid valve, AT-150
❏ Line pressure solenoid valve, AT-163
❏ Shift solenoid valve A, AT-169
❏ Shift solenoid valve B, AT-174
❏ Accelerator pedal position (APP) sensor, AT-179
❏ Overrun clutch solenoid valve, AT-181
❏ A/T fluid temperature sensor, AT-113
❏ Vehicle speed sensor·MTR, AT-192
❏ CAN communication line, AT-104
❏ Control unit (RAM), Control unit (ROM), AT-202
❏ Control unit (EEP ROM), AT-204
❏ Park/neutral position (PNP) & ov erd rive control switches, closed throttle position signa l and wide-
open throttle position signals check AT-236 .
❏ Battery
❏ Others
.
.
.
.
.
.
.
.
.
.
❏ Low & reverse brake
❏ Low one-way clutch
❏ Engine
❏ Line pressure is low
❏ Clutches and brakes except high clutch and
brake band are OK
.
.
.
.
.
.
AT-73
A
B
,
AT
D
E
F
G
H
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AT-65
M
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TROUBLE DIAGNOSIS - INTRODUCTION
[RE4F04B]
4-2. Check at idle AT-76
❏ Engine Cannot Be Started In P and N Position, AT-211 .
❏ In P Position, Vehicle Moves Forward or Backward When Pushed, AT-212
❏ In N Position, Vehicle Moves, AT-212
❏ Large Shock. N → R Position, AT-214
❏ Vehicle Does Not Creep Backward In R Position, AT-215
❏ Vehicle Does Not Creep Forward In D or L Position, AT-217
.
.
.
.
4-3. Cruise test AT-78
Part-1
❏ Vehicle Cannot Be Started From D
❏ A/T Does Not Shift: D
❏ A/T Does Not Shift: D
❏ A/T Does Not Shift: D
1 → D2 or Does Not Kickdown: D4 → D2 , AT-221 .
2 → D3 , AT-223 .
3 → D4 , AT-225 .
❏ A/T Does Not Perform Lock-up, AT-227
❏ A/T Does Not Hold Lock-up Condition, AT-229
❏ Lock-up Is Not Released, AT-230
❏ Engine Speed Does Not Return To Idle (Light Braking D
1 , AT-219 .
.
.
.
4 → D3 ), AT-231 .
Part-2 AT-85
❏ Vehicle Does Not Start From D1 , AT-233 .
❏ A/T Does Not Shift: D
❏ A/T Does Not Shift: D
❏ A/T Does Not Shift: D
4.
Part-3 AT-86
1 → D2 or Does Not Kickdown: D4 → D2 , AT-221 .
2 → D3 , AT-223 .
3 → D4 , AT-225 .
❏ A/T Does Not Shift: D4 → D3 , When Overdrive Control Switch ON → OFF, AT-233 .
❏ Engine Speed Does Not Return To Idle (Engine Brake In D
❏ A/T Does Not Shift: D
3 → L2 , When Selector Lever D → L Position, AT-234 .
❏ Vehicle Does Not Decelerate By Engine Brake, AT-234
3 ), AT-231 .
.
❏ SELF-DIAGNOSTIC PROCEDURE — Mark detected items.
❏ Park/neutral position (PNP) switch, AT-107
❏ A/T fluid temperature sensor, AT-113
❏ Vehicle speed sensor·A/T (Revolution sensor), AT-119
❏ Engine speed signal, AT-124
.
.
.
.
❏ Turbine revolution sensor (power train revolution sensor) , AT-197
❏ Torque converter clutch solenoid valve, AT-150
❏ Line pressure solenoid valve, AT-163
❏ Shift solenoid valve A, AT-169
❏ Shift solenoid valve B, AT-174
.
.
.
❏ Accelerator pedal position (APP) sensor, AT-179
❏ Overrun clutch solenoid valve, AT-181
❏ A/T fluid temperature sensor, AT-113
❏ Vehicle speed sensor·MTR, AT-192
❏ CAN communication line, AT-104
.
.
.
.
❏ Control unit (RAM), Control unit (ROM), AT-202
❏ Control unit (EEP ROM), AT-204
.
.
.
.
❏ Park/neutral position (PNP) & overdrive contro l swi tches, cl osed throttle position signal and wideopen throttle position signals check AT-236 .
❏ Battery
❏ Others
5. ❏ For self-diagnosis NG items, inspect each componen t. Repair or replace the damaged parts. AT-250
6. ❏ Perform all ROAD TEST and re-mark required procedures. AT-74
7. ❏ Perform DTC CONFIRMATION PROCEDURE for following MIL indicating items and check out NG items.
Refer toEC-51, "
Emission-related Diagnostic In form a tion" .
❏ DTC (P0731) A/T 1st gear function, AT-128 .
❏ DTC (P0732) A/T 2nd gear function, AT-133
❏ DTC (P0733) A/T 3rd gear function, AT-138
❏ DTC (P0734) A/T 4th gear function, AT-143
❏ DTC (P0744) A/T TCC S/V function (lock-up), AT-155
.
.
.
.
.
AT-82
.
EC-51
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AT-66
Page 84
TROUBLE DIAGNOSIS - INTRODUCTION
[RE4F04B]
8. ❏ Perform the Diagnostic Procedures for all remaining items marked NG. Repair or replace the damaged parts.
Refer to the Symptom Chart when you perform the procedures. (The chart also shows some other poss ib le
symptoms and the component inspecti on or der s.)
9. ❏ Erase DTC from TCM and ECM memories. AT-44
Work Flow
AT-46
AT-58
ECS00DZX
HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, ea ch custo mer fe els di ff er ently ab out a pr obl em. It is impor t ant to fu lly unders ta nd the sympt oms or
conditions for a customer complaint.
Make good use of the two sheets provided, AT-64, "
sheet" , to perform the best troubleshooting possible.
Information from Customer" and AT-65, "Diagnostic Work-
A
B
AT
D
E
F
G
H
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AT-67
Page 85
WORK FLOW CHART
TROUBLE DIAGNOSIS - INTRODUCTION
[RE4F04B]
SAT086JI
*1: AT-64 *2: AT-65 *3: AT-12
*4: AT-69 *5: AT-70, AT-73 *6: AT-74
*7: AT-46 *8: AT-42 *9: AT-42
*10: AT-42 *11: AT-42 *12: AT-206
*13: AT-206 *14: AT-88 *15: AT-44
*16: AT-107 *17: AT-186 *18: EC-51
Revision: July 2006 2006 Quest
AT-68
Page 86
TROUBLE DIAGNOSIS - BASIC INSPECTION
[RE4F04B]
TROUBLE DIAGNOSIS - BASIC INSPECTION PFP:00000
A/T Fluid Check
FLUID LEAKAGE CHECK
1. Clean area suspected of leaking. — for example, mating surface
of converter housing and transmission case.
2. Start engine, apply foot bra ke, pl ace selec tor l ever in D position
and wait a few minutes.
3. Stop engine.
ECS00DZY
A
B
AT
D
4. Check for fresh leakage.
FLUID CONDITION CHECK
Fluid status Conceivable Cause Required Operation
Replace the A/T fluid and check the
Varnished (viscous
varnish state)
Milky white or
cloudy
Large amou nt of
metal powder mixed
in
Clutch, brake
scorched
Water in the flu id
Unusual wear of
sliding parts within
A/T
A/T main unit and the vehicle for
malfunctions (wire harnesses,
cooler pipes, etc.)
Replace the A/T fluid and check for
places where water is getting in.
Replace the A/T fluid and check for
improper operation of the A/T.
BCIA0007E
SAT288G
SAT638A
E
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FLUID LEVEL CHECK
Refer to MA-23, "Checking A/T Fluid" .
A/T Fluid Cooler Cleaning
ECS00DZZ
Refer to AT-19, "A/T Fluid Cooler Cleaning" .
A/T FLUID COOLER CLEANING PROCEDURE
Refer to AT-19, "A/T FLUID COOLER CLEANING PROCEDURE" .
A/T FLUID COOLER DIAGNOSIS PROCEDURE
Refer to AT-20, "A/T FLUID COOLER DIAGNOSIS PROCEDURE" .
A/T FLUID COOLER INSPECTION PROCEDURE
Refer to AT-21, "A/T FLUID COOLER INSPECTION PROCEDURE" .
A/T FLUID COOLER FINAL INSPECTION
Refer to AT-21, "A/T FLUID COOLER FINAL INSPECTION" .
Revision: July 2006 2006 Quest
AT-69
M
Page 87
TROUBLE DIAGNOSIS - BASIC INSPECTION
[RE4F04B]
Stall Test
STALL TEST PROCEDURE
1. Check A/T fluid and engine oil levels. If necessar y, add fluid and
oil.
2. Drive vehicle for approximately 10 minutes or until fluid and oil
reach operating temperature.
ATF operating temperature :50 - 80°C (122 - 176°F)
3. Set parking brake and block wheels.
4. Install a tachometer where it can be seen by driver during test.
● It is good practice to mark the point of specified engine
rpm on indicator.
ECS00E00
SAT647B
5. Start engine, apply foot brake, and place selector lever in D
position.
6. Accelerate to wide open throttle gradually while applying foot
brake.
7. Quickly no te th e e ng in e s tall revolution and im me di ately release
throttle.
● During test, never hold throttle wide open for more than 5
seconds.
Stall revolution : 2,500 - 3,050 rpm
8. Move selector l ever to N position.
9. Cool off ATF.
● Run engine at idle for at least one minute.
10. Repeat steps 5 through 9 with selector lever in L and R positions.
SCIA1224E
SAT514G
BCIA0008E
JUDGEMENT OF STALL TEST
The test result and possible damaged components relating to each result are shown in the illustrations on next
page.
In order to pinpoint the possible damaged components, refer to AT-68, "
NOTE:
Stall revolution is too high in D or L position:
● Slippage occurs in 1st gear but not in 2nd and 3rd gears. ..... Low one-way clutch slippage
● Slippage occurs in the followi ng gears:
Revision: July 2006 2006 Quest
AT-70
WORK FLOW CHART" .
Page 88
TROUBLE DIAGNOSIS - BASIC INSPECTION
[RE4F04B]
1st through 3rd gears in D position and engine brake functions.
1st and 2nd gea rs in L posit ion and engi ne brake fun ctions with ac celerator peda l released (fu lly closed
throttle). ..... Forward clutch or forward one-way clutch slippage
Stall revolution is too high in R position:
● Engine brake does not function in R position. ..... Low & reverse brake slippage
● Engine brake functions in R position. ..... Reverse clutch slippage
Stall revolution within specifications:
● Vehicle does not achieve spee d of more than 80 km/ h (50 MPH). ..... On e-way clutch seiz ure in torque
converter housing
CAUTION:
Be careful since automatic fluid temperature increases abnormally.
● Slippage occurs in 3rd and 4th gears in D position. ..... High clutch slippage
● Slippage occurs in 2nd and 4th gear in D position. ..... Brake band slippage
● Engine brake does not function in 2nd and 3rd gears in D position with overdrive control switch set to ON
and 2nd gear in L position. ..... Overrun clutch slippage
Stall revolution less than specifications:
● Poor acceleration during starts. ..... One-way clutch seizure in torque converter
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[RE4F04B]
Line Pressure Test
LINE PRESSURE TEST PORTS
Location of line pressure test ports are shown in the illustration.
● Always replace pressure plugs as they are self-sealing
bolts.
LINE PRESSURE TEST PROCEDURE
1. Check A/T fluid and engine oil levels. If necessary, add fluid and
oil.
2. Drive vehicle for approximately 10 minutes or until fluid and oil
reach operating temperature.
ATF operating temperature :50 - 80°C (122 - 176°F)
ECS00E01
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3. Install pres s ure gaug e to co rres p on din g lin e pre ssure port .
4. Set parking brake and block wheels.
● Continue to depress bra ke pe da l fu lly w hi le line p res sure
test is being performed at stall speed.
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5. Start engine and measure line pressure at idle and stall speed.
● When measuring line press ure at stall speed, follow the
stall test procedure.
[RE4F04B]
Line pressure : AT-362, "
Line Pressure"
JUDGEMENT OF LINE PRESSURE TEST
Judgement Suspected parts
Line pressure is low in all positions.
Line pressure is low in particular position.
At idle
Line pressure is high.
Line pressure is low.
At stall speed
SAT493G
● Oil pump wear
● Control piston damage
● Pressure regulator valv e or plug st icki ng
● Spring for pressure regul at or valve damaged
● Fluid pressure leakag e bet w een oil strain er an d pres -
sure regulator valve
● Clogged strainer
● Fluid pressure leakage between manual valve and par-
ticular clutch
● For example, line press ure is:
− Low in R positions, but
− Normal in D and L positions.
Therefore, fluid leakage exists at or around low &
reverse brake circuit.
Refer to AT-27, "
● Maladjustment of ac cel er ato r peda l pos ition sensor
● A/T fluid temperature sensor damaged
● Line pressure sole noid val ve st i cking
● Short circuit of line pressure solenoid valve circuit
● Pressure modif ie r valve st icki ng
● Pressure regulator valv e or plug st icki ng
● Open in dropping resi stor circuit
● Maladjustment of ac cel er ato r peda l pos ition sensor
● Line pressure sole noid val ve st i cking
● Short circuit of line pressure solenoid valve circuit
● Pressure regulator valv e or plug st icki ng
● Pressure modif ie r valve st icki ng
● Pilot valve sticking
CLUTCH AND BAND CHART" .
Road Test
ECS00E02
DESCRIPTION
● The purpose of the test is to determine overall performance of A/
T and analyze causes of problems.
● The road test consists of the following three parts:
1. Check before engine is started
2. Check at idle
3. Cruise test
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● Before road test, familiarize yourself with all test procedures and
items to check.
● Conduct tests on all items until specified symptom is found.
Troubleshoot items which check out No Good after road test.
Refer to AT-42, "
DESCRIPTION" , and AT-206, "TROUBLE DIAGNOSIS FOR
SYMPTOMS" .
ON BOARD DIAGNOSTIC SYSTEM
[RE4F04B]
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1. CHECK BEFORE ENGINE IS STARTED
1. CHECK O/D OFF INDICATOR LAMP
1. Park vehicle on flat surface.
2. Move selector lever to P position.
3. Turn ignition switch to OFF positio n. Wait at least 5 second s.
4. Set overdrive control switch to ON position.
5. Turn ignition switch to ON position. (Do not start engine.)
6. Does O/D OFF indicator lamp come on for about 2 seconds?
Yes or No
Yes >> GO TO 2.
No >> Stop ROAD TEST. Go to AT- 2 09 , "
Lamp Does Not Come On" .
O/D OFF Indicator
2. CHECK O/D OFF INDICATOR LAMP
Does O/D OFF indicator lamp flicker for about 8 seconds?
Yes or No
Yes >>TCM is under fail-safe mode. Perform self-diagnosis
and check NG items on the DIAGNOSTIC WORKSHEET, AT-65
PROCEDURE (WITH CONSULT-II)" or AT-58, "TCM
SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" .
No >> 1. Turn ignition switch to OFF position.
2. Perform self-diagnosis and note NG items.
Refer to AT-46, "
(WITH CONSULT-II)" or AT-58, "TCM SELF-DIAG-
NOSTIC PROCEDURE (NO TOOLS)" .
3. GO TO AT-76, "
. Refer to AT-46, "SELF-DIAGNOSTIC
SELF-DIAGNOSTIC PROCEDURE
2. CHECK A T IDLE" .
[RE4F04B]
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2. CHECK AT IDLE
1. CHECK ENGINE START
1. Park vehicle on flat surface.
2. Move selector lever to P or N position.
3. Turn ignition switch to OFF position.
4. Turn ignition switch to START position.
5. Is engine started?
Yes or No
Yes >> GO TO 2.
No >> Stop ROAD TEST. Mark the box on the DIAGNOSTIC
WORKSHEET. Go to AT-211, "
Started in P and N Position" .
Engine Cannot Be
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[RE4F04B]
2. CHECK ENGINE START
1. Turn ignition switch to OFF position.
2. Push and hold shift lock release button.
3. Move selector lever to D, L or R positio n.
4. Turn ignition switch to START position.
5. Is engine started?
Yes or No
Yes >> Stop ROAD TEST. Mark the box on the DIAGNOSTIC
WORKSHEET. Go to AT-211, "
Started in P an d N Position" .
No >> GO TO 3.
Engine Cannot Be
3. CHECK VEHICLE MOVE
1. Turn ignition switch to OFF position.
2. Move selector lever to P position.
3. Release parking brake.
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4. Push vehicle forward or backwar d.
5. Does vehicle move when it is pushed for ward or backward?
6. Apply parking brake.
Yes or No
Yes >> Mark the box “In P Position, Vehicle Moves Forward Or
Backward When Pushed” on the DIAGNOSTIC WORK-
SHEET. Continue ROAD TEST.
No >> GO TO 4.
4. CHECK VEHICLE MOVE
1. Apply parking brake.
2. Move selector lever to N position.
3. Start engine.
4. Release parking brake.
5. Does vehicle move forward or backward?
Yes or No
Yes >> Mark the box “In N Position, Vehicle Moves” on the
DIAGNOSTIC WORKSHEET. Continue ROAD TEST.
No >> GO TO 5.
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5. CHECK SHIFT LOCK
1. Apply foot brake.
2. Move selector l ever to R position.
3. Is there large shock when changi ng from N to R position?
Yes or No
Yes >>Mark the box “Large shock N →R Position” on the
DIAGNOSTIC WORKSHEET. Continue ROAD TEST.
No >> GO TO 6.
[RE4F04B]
SAT797A
6. CHECK VEHICLE MOVE
1. Release foot brake for several seconds.
2. Does vehicle creep backward when foot brake is released?
Yes or No
Yes >> GO TO 7.
No >> Mark the box “Vehicle Does Not Cree p Backward In R
Position” on the DIAGNOSTIC WORKSHEET. Continue
ROAD TEST.
7. CHECK VEHICLE MOVE
1. Move selector lever to D and L posit ions and check if vehicle
creeps forward.
2. Does vehicle creep forward i n all two positions?
Yes or No
Yes >> Go to AT-78, "3. CRUISE TEST" .
No >> Mark the box “Vehicle Does Not Creep Forward In D Or
L Position” on the DIAGNOSTIC WORKSHEET. Continue ROAD TEST.
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3. CRUISE TEST
● Check all items listed in Parts 1 th rough 3.
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With CONSULT-II
● Using CONSULT-II, conduct a cruise test and record the result.
● Print the result and ensu re that shifts and lock-ups take place as
per Shift Schedule. Refer to AT-361, "
Shift Schedule"
[RE4F04B]
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CONSULT -II Setting Procedure
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
● For details, refer to the separate “CONSULT-II Operations Manual”.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector, which is located in left side dash panel.
3. Turn ignition switch ON.
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4. Touch “START (NISSAN BASED VHCL)”.
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5. Touch “A/T”.
If “A/T” is not indicated, go to GI-38, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
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6. Touch “DATA MONITOR”.
7. Touch “MAIN SIGNALS” or “TCM INPUT SIGNALS”.
8. See “Numerical Display”, “Barchart Display” or “Line Graph Display”.
[RE4F04B]
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9. Touch “SETTING” to set recording c ondition (“AUTO TRIG” or
“MANU TRIG”) and touch “BACK”.
10. Touch “Start”.
11. When performing cruise test, touch “RECORD”.
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12. After finishing cruise test part 1, touch “STOP”.
13. Touch “STORE” and touch “BACK”.
[RE4F04B]
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14. Touch “DISPLAY”.
15. Touch “PRINT”.
16. Check the monitor data printe d out.
17. Continue cruise test part 2 and 3.
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[RE4F04B]
Cruise Test — Part 1
1. CHECK STARTING GEAR (D1 ) POSITION
1. Drive vehicle for approximately 10 minutes to warm engine oil and ATF up to operating temperature.
ATF operating temperature : 50 - 80°C (122 - 176°F)
2. Park vehicle on flat surface.
3. Set overdrive control switch to ON position.
4. Move selector lever to P position.
5. Start engine.
SCIA3528E
6. Move selector l ever to D position.
7. Accelerate vehicle by constantly depressing accelerator pedal
half-way.
8. Does vehicle start from D
1 ?
Read gear position.
Yes or No
Yes >> GO TO 2.
No >> Mark the box of “Vehicle Cannot Be Started From D
1 ”
on the DIAGNOSTIC WORKSHEET. Continue ROAD
TEST.
2. CHECK SHIFT UP (D1 TO D2 )
Does A/T shift from D
Read gear position, thr ottle opening and vehicle speed.
Specified speed when shifting from D1 to D2
Yes or No
Yes >> GO TO 3.
No >> Mark the box of “A/T Does Not Shift: D
Not Kickdown: D
SHEET. Continue ROAD TEST. Continue ROAD TEST.
1 to D2 at the specified speed?
: Refer to AT-361, "Shift Schedule" .
1 → D2 or Does
4 →D2 ” on the DIAGNOSTIC WORK-
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[RE4F04B]
3. CHECK SHIFT UP (D2 TO D3 )
Does A/T shift from D
Read gear position, throttle opening and vehicle speed.
Specified speed when shifting from D
Yes or No
Yes >> GO TO 4.
No >> Mark the bo x of “A/T Does No t Shift: D
DIAGNOSTIC WORKSHEET. Continue ROAD TEST.
Continue ROAD TEST.
2 to D3 at the specified speed?
2 to D3
: Refer to AT-361, "Shift Schedule" .
2 → D3 ” on the
4. CHECK SHIFT UP (D3 TO D4 )
Does A/T shift from D
Read gear position, throttle opening and vehicle speed.
Specified speed when shifting from D3 to D4
Yes or No
Yes >> GO TO 5.
No >> Mark the bo x of “A/T Does No t Shift: D
DIAGNOSTIC WORKSHEET. Continue ROAD TEST.
Continue ROAD TEST.
3 to D4 at the specified speed?
: Refer to AT-361, "Shift Schedule" .
3 → D4 ” on the
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5. CHECK LOCK-UP (D4 TO D4 L/U)
Does A/T perf orm lock-up at the specified speed?
Read vehicle speed, throttle opening when lock-up duty
becomes 94%.
Specified speed when lock-up occurs
: Refer to AT-361, "
Yes or No
Yes >> GO TO 6.
No >> Mark the box of “A/T Does Not Perform Lock-up” on the
DIAGNOSTIC WORKSHEET. Continue ROAD TEST.
Shift Schedule" .
SAT957I
6. CHECK HOLD LOCK-UP
Does A/T hold lock-up condition for more than 30 seconds?
Yes or No
Yes >> GO TO 7.
No >> Mark the box of “A/T Does Not Hold Lock-up Condition” on the DIAGNOSTIC WORKSHEET.
Continue ROAD TEST.
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