Nissan Terrano 2002, Terrano 2003, Terrano 2005, Terrano 2006 User Manual

Edition: February 2002 Release: February 2002 (01) Publication No.: SM2E00-1R20E0E

QUICK REFERENCE INDEX

GENERAL INFORMATION GI

MAINTENANCE MA

ENGINE MECHANICAL EM

TERRANO

MODEL R20 SERIES

ENGINE LUBRICATION & COOLING SYSTEMS

LC

ENGINE CONTROL SYSTEM EC

ACCELERATOR CONTROL, FUEL & EXHAUST SYSTEM

FE

CLUTCH CL

MANUAL TRANSMISSION MT

AUTOMATIC TRANSMISSION AT

TRANSFER TF

PROPELLER SHAFT & DIFFERENTIAL CARRIER

PD

FRONT AXLE & FRONT SUSPENSION FA

NISSAN EUROPE N.V.

Produced in The Netherlands

REAR AXLE & REAR SUSPENSION RA

BRAKE SYSTEM BR

STEERING SYSTEM ST

RESTRAINT SYSTEM RS

BODY & TRIM BT

HEATER & AIR CONDITIONER HA

STARTING & CHARGING SYSTEMS SC

ELECTRICAL SYSTEM EL

ALPHABETICAL INDEX IDX

FOREWORD

This manual contains maintenance and repair procedures for NISSAN TERRANO, model R20 series.

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 completely satisfy himself that neither his safety nor the vehicle’s safety will be jeopardized by the service method selected.

NISSAN EUROPE N.V.

Service Operations Section

Paris, France

AUTOMATIC TRANSMISSION

CONTENTS

PREPARATION AND PRECAUTIONS............................3

Special Service Tools ..................................................3

Supplemental Restraint System (SRS) ″AIR

BAG″ and ″SEAT BELT PRE-TENSIONER″...............4

Precautions ..................................................................4

Service Notice or Precautions .....................................5

OVERALL SYSTEM ........................................................6

A/T Electrical Parts Location .......................................6

Wiring Diagram - A/T -.................................................7

Cross-sectional View ...................................................8

Hydraulic Control Circuits ............................................9

Shift Mechanism ........................................................10

Control System ..........................................................12

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION...............................................................14

Self-diagnosis ............................................................14

Diagnosis by CONSULT-II .........................................20

TROUBLE DIAGNOSIS - Introduction ........................22

Introduction ................................................................22

Diagnostic Worksheet ................................................23

Work Flow ..................................................................26

TROUBLE DIAGNOSIS - Basic Inspection ................27

A/T Fluid Check .........................................................27

Stall Test ....................................................................27

Line Pressure Test.....................................................30

Road Test...................................................................32

TROUBLE DIAGNOSIS - General Description ...........43

Symptom Chart ..........................................................43

TCM Terminals and Reference Value........................46

TROUBLE DIAGNOSIS FOR VHCL SPEED

SEN⋅A/T .........................................................................49

Wiring Diagram - AT - VSSA/T..................................49

Vehicle Speed Sensor⋅A/T (Revolution sensor) ........50

TROUBLE DIAGNOSIS FOR VHCL SPEED

SEN⋅MTR .......................................................................52

Wiring Diagram - AT - VSSMTR................................52

Vehicle Speed Sensor⋅MTR ......................................54

SECTION

TROUBLE DIAGNOSIS FOR THROTTLE POSI

SEN ................................................................................56

Wiring Diagram - AT - TPS........................................56

Throttle (Accelerator) Position Sensor ......................60

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V

A.....................................................................................62

Wiring Diagram - AT - SSV/A ....................................62

Shift Solenoid Valve A ...............................................63

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V

B.....................................................................................65

Wiring Diagram - AT - SSV/B ....................................65

Shift Solenoid Valve B ...............................................66

TROUBLE DIAGNOSIS FOR OVERRUN CLUTCH

S/V..................................................................................68

Wiring Diagram - AT - OVRCSV................................68

Overrun Clutch Solenoid Valve .................................69

TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V .....71

Wiring Diagram - AT - TCV........................................71

Torque Converter Clutch Solenoid Valve ..................72

TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP

SEN ................................................................................75

Wiring Diagram - AT - BA/FTS ..................................75

A/T Fluid Temperature Sensor and TCM Power

Source........................................................................76

TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG ....79

Wiring Diagram - AT - ENGSS ..................................79

Engine Speed Signal .................................................80

TROUBLE DIAGNOSIS FOR LINE PRESSURE

S/V..................................................................................82

Wiring Diagram - AT - LPSV......................................82

Line Pressure Solenoid Valve ...................................84

TROUBLE DIAGNOSIS FOR NON-DETECTABLE

ITEMS.............................................................................87

Wiring Diagram - AT - PNP/SW.................................87

Park/neutral Position, Overdrive Control or

Throttle (Accelerator) Position Switches ...................88

DIAGNOSTIC PROCEDURES FOR SYMPTOMS........94

AT

CONTENTS (Cont’d)

1. SPORT Indicator Lamp Does Not Come On ........94

2. SPORT or SNOW Indicator Lamp Does Not

Come On...................................................................95

3. O/D OFF Indicator Lamp Does Not Come On......95

4. SPORT Indicator Lamp Does Not Come On ........96

5. Engine Cannot Be Started In ″P″ and ″N″

Position......................................................................97

6. In ″P″ Position, Vehicle Moves Forward Or

Backward When Pushed...........................................97

7. In ″N″ Position, Vehicle Moves .............................98

8. Large Shock. ″N″ -> ″R″ Position .........................99

9. Vehicle Does Not Creep Backward In ″R″

Position....................................................................100

10. Vehicle Does Not Creep Forward In ″D″, ″2″

Or ″1″ Position.........................................................101

11. Vehicle Cannot Be Started From D

12. A/T Does Not Shift: D

Kickdown: D

-> D2..................................................103

4

13. A/T Does Not Shift: D

14. A/T Does Not Shift: D

-> D2Or Does Not

1

-> D3............................104

2

-> D4.............................105

3

.................102

1

15. A/T Does Not Perform Lock-up .........................106

16. A/T Does Not Hold Lock-up Condition ..............107

17. Lock-up Is Not Released ...................................107

18. Engine Speed Does Not Return To Idle (Light

Braking D

19. Vehicle Does Not Start From D

20. A/T Does Not Shift: D

-> D3).....................................................108

4

.......................109

1

-> D1When

2

Depressing Accelerator Pedal................................. 110

21. A/T Does Not Shift: D

-> D3, When

4

Overdrive Control Switch ″ON″ -> ″OFF″ ............... 111

22. A/T Does Not Shift: D

-> 22, When Selector

3

Lever ″D″ -> ″2″ Position......................................... 111

23. A/T Does Not Shift: 2

-> 11, When Selector

2

Lever ″2″ -> ″1″ Position ......................................... 112

24. Vehicle Does Not Decelerate By Engine

Brake........................................................................112

ON-VEHICLE SERVICE .............................................. 113

Control Valve Assembly and Accumulators.............113

Revolution Sensor Replacement ............................. 114

Rear Oil Seal Replacement..................................... 114

Parking Components Inspection.............................. 114

Park/neutral Position Switch Adjustment................. 114

Manual Control Linkage Adjustment........................ 115

REMOVAL AND INSTALLATION................................116

Removal................................................................... 116

Installation................................................................ 117

MAJOR OVERHAUL ................................................... 119

Oil Channel ..............................................................121

Locations of Needle Bearings, Thrust Washers

and Snap Rings .......................................................122

DISASSEMBLY............................................................123

Disassembly.............................................................123

REPAIR FOR COMPONENT PARTS..........................134

Oil Pump ..................................................................134

Control Valve Assembly...........................................138

Control Valve Upper Body .......................................144

Control Valve Lower Body .......................................149

Reverse Clutch ........................................................151

High Clutch ..............................................................155

Forward and Overrun Clutches ...............................157

Low & Reverse Brake..............................................161

Forward Clutch Drum Assembly ..............................165

Rear Internal Gear and Forward Clutch Hub ..........168

Band Servo Piston Assembly ..................................171

Parking Pawl Components ......................................175

ASSEMBLY..................................................................177

Assembly (1) ............................................................177

Adjustment ...............................................................185

Assembly (2) ............................................................188

A/T FLUID COOLER SYSTEM ...................................195

A/T Fluid Cooler.......................................................195

SERVICE DATA AND SPECIFICATIONS (SDS) ........196

General Specifications .............................................196

Specifications and Adjustment.................................196

When you read wiring diagrams:

! Read GI section, “HOW TO READ WIRING DIAGRAMS”. ! See EL section, “POWER SUPPLY ROUTING” for power distribution circuit.

When you perform trouble diagnoses, read GI section, “HOW TO FOLLOW FLOW CHART IN TROUBLE DIAGNOSES” and “HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT”.

AT-2

PREPARATION AND PRECAUTIONS

Special Service Tools

Tool number Tool name

ST2505S001 Oil pressure gauge set

"

1 ST25051001

Oil pressure gauge

"

2 ST25052000

Hose

"

3 ST25053000

Joint pipe

"

4 ST25054000

Adapter

"

5 ST25055000

Adapter

ST07870000 Transmission case stand

KV31102100 Torque converter oneway clutch check tool

Description

NT097

NT421

Measuring line pressure

Disassembling and assembling A/T

a: 182 mm (7.17 in) b: 282 mm (11.10 in) c: 230 mm (9.06 in) d: 100 mm (3.94 in)

Checking one-way clutch in torque converter

ST25850000 Sliding hammer

ST33200000 Drift

KV31102400 Clutch spring compressor

NT098

NT422

NT091

NT423

Removing oil pump assembly

a: 179 mm (7.05 in) b: 70 mm (2.76 in) c: 40 mm (1.57 in) dia. d: M12 x 1.75P

Installing oil pump housing oil seal Installing rear oil seal

a: 60 mm (2.36 in) dia. b: 44.5 mm (1.752 in) dia.

Removing and installing clutch return springs

a: 320 mm (12.60 in) b: 174 mm (6.85 in)

AT-3

PREPARATION AND PRECAUTIONS

Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along with a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger in a frontal collision. The SRS system composition which is available to NISSAN MODEL R20 is as follows (The composition varies according to the destination.): Driver air bag module (located in the center of the steering wheel), front passenger air bag module (located on the instrument panel on passenger side), seat belt pre-tensioner, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable. Information necessary to service the system safely is included in the RS section of this Service Manual.

WARNING:

! To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death

in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN dealer.

! Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-

sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the RS section.

! Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. Spiral cable and wiring harnesses covered with yellow insulation either just before the harness connectors or for the complete harness are related to the SRS.

Precautions

! Before proceeding with disassembly, thoroughly clean the outside of the transmission. It is important to

prevent the internal parts from becoming contaminated 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 leave fibers that could inter-

fere with the operation of the transmission.

! Place disassembled parts in order for easier and proper assembly. ! All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or

reassembly.

! Gaskets, seals and O-rings should be replaced any time the transmission 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 removed parts in a parts rack in order to replace them in correct positions and sequences. Care will also prevent springs and small parts from becoming scattered or lost.

! Properly installed valves, sleeves, plugs, etc. will 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, and to 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. ! After overhaul, refill the transmission 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

converter and ATF cooling system. Always follow the procedures under “Changing A/T Fluid” in the MA section when changing A/T fluid.

AT-4

PREPARATION AND PRECAUTIONS

Service Notice or Precautions

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 “1”, “2” or “D”. Customer may complain of “sluggish or poor acceleration”. When the Fail-Safe operation occurs the next time the key is turned to the “ON” position, the SPORT indicator lamp will blink for about 8 seconds. (For diagnosis, refer to AT-33.) Fail-Safe may activate without electrical circuit damages if the vehicle is driven under extreme conditions (such as excessive wheel spins and emergency braking immediately afterwards). In this case, turn the ignition key “OFF” for 5 seconds and then “ON” to recover normal shift pattern. The blinking of the SPORT indicator lamp for about 8 seconds will appear only once and be cleared. The customer may resume normal driving conditions by chance. Always follow the “WORK FLOW” (Refer to AT-26). The SELF-DIAGNOSIS results will be as follows:

The first SELF-DIAGNOSIS will indicate the damage of the vehicle speed sensor or the revolution sensor. During the next SELF-DIAGNOSIS performed after checking the sensor, no damages will be indicated.

AT-5

OVERALL SYSTEM

A/T Electrical Parts Location

AT-6

YAT352

OVERALL SYSTEM

Wiring Diagram — A/T —

AT-7

YAT260

OVERALL SYSTEM

Cross-sectional View

AT-8

SAT125BA

OVERALL SYSTEM

Hydraulic Control Circuits

AT-9

SAT624GA

OVERALL SYSTEM

Shift Mechanism

The automatic transmission uses compact, dual planetary gear systems to improve power-transmission efficiency, simplify construction and reduce weight. It also employs an optimum shift control and superwide gear ratios. They improve starting performance and acceleration during medium and high-speed operation. Two one-way clutches are also employed: one is used for the forward clutch and the other for the low clutch. These one-way clutches, combined with four accumulators, reduce shifting shock to a minimum.

CONSTRUCTION

"

1 Torque converter clutch piston

"

2 Torque converter

"

3 Oil pump

"

4 Input shaft

"

5 Brake band

"

6 Reverse clutch

"

7 High clutch

"

8 Front pinion gear

"

9 Front sun gear

"

10

Front internal gear

"

11

Front planetary carrier

"

12

Rear sun gear

"

13

Rear pinion gear

"

14

Rear internal gear

"

15

Rear planetary carrier

"

16

Forward clutch

FUNCTION OF CLUTCH AND BRAKE

Control members Abbr. Function

"

6 Reverse clutch R/C To transmit input power to front sun gear"9 .

"

7 High clutch H/C To transmit input power to front planetary carrier

"

16

Forward clutch F/C To connect front planetary carrier

"

18

Overrun clutch O/C To connect front planetary carrier

"

5 Brake band B/B To lock front sun gear"9 .

"

17

Forward one-way clutch F/O.C

"

19

Low one-way clutch L/O.C At D1position, to prevent rear internal gear

"

20

Low & reverse brake L & R/B

When forward clutch is engaged, to stop rear internal gear direction.

To lock rear internal gear

"

(R position).

"

11

with forward one-way clutch

"

11

with rear internal gear

14

(2, 12and 11), to lock front planetary carrier

"

17

Forward one-way clutch

"

18

Overrun clutch

"

19

Low one-way clutch

"

20

Low & reverse brake

"

21

Parking pawl

"

22

Parking gear

"

23

Output shaft

"

11

.

"

17

.

"

14

.

"

14

from rotating in opposite

"

14

from rotating in opposite direction.

"

SAT509I

11

AT-10

OVERALL SYSTEM

Shift Mechanism (Cont’d)

CLUTCH AND BAND CHART

"

Shift position

P

R " "

N

1st " *1

D*4

*1: Operates when overdrive control or A/T mode switch is being set in “OFF” or “SPORT” position. *2: Oil pressure is applied to both 2nd “apply” side and 3rd “release” side of band servo piston. However, 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 condition *2 above, and brake band contracts. *4: A/T will not shift to 4th when overdrive control or A/T mode switch is set in “OFF” or “SPORT” position.

2nd " *1

3rd ""*1

4th "

2

1

1st "

2nd "

1st "" ! "

2nd """ !

6

Reverse

clutch

"

7

High

clutch

"

16

Forward

clutch

"

18

Overrun

clutch

Band servo

2nd

apply

" !

*2 !

*3 ""

" !

3rd

release

4th

apply

17

Forward

one-

way

clutch

!!

" : Operates.

: Operates when throttle opening is less than 3/16, activating engine brake.

! : Operates during “progressive” acceleration.

: Operates but does not affect power transmission.

: Operates when throttle opening is less than 3/16, but does not affect engine brake.

"

19

Low oneway

clutch

"

20

Low &

reverse

brake

Lock-up Remarks

PARK

POSITION

REVERSE POSITION

NEUTRAL POSITION

Automatic shift

1 ) 2 ) 3 ) 4

Automatic shift

1 ) 2

Locks (held sta-

tionary)

in 1st speed

1 + 2

AT-11

OVERALL SYSTEM

Control System

OUTLINE

The automatic transmission senses vehicle operating conditions through various sensors. It always controls the optimum shaft position and reduces shifting and lock-up shocks.

SENSORS TCM ACTUATORS

Park/neutral position switch Throttle (accelerator) position sensor Closed throttle position switch Wide open throttle position switch Engine speed signal A/T fluid temperature sensor Revolution sensor Vehicle speed sensor Overdrive control switch A/T mode switch

#

Shift control Line pressure control Lock-up control Overrun clutch control Timing control Fail-safe control Self-diagnosis Duet-EU control CONSULT-II communication line control

#

Shift solenoid valve A Shift solenoid valve B Overrun clutch solenoid valve Torque converter clutch solenoid valve Line pressure solenoid valve O/D OFF or SPORT indicator lamp

CONTROL SYSTEM

AT-12

NAT230

OVERALL SYSTEM

Control System (Cont’d)

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

Sensors and solenoid valves Function

Park/neutral position switch Detects select lever position and sends a signal to TCM.

Throttle (accelerator) position sensor Detects throttle valve position and sends a signal to TCM.

Closed throttle position switch Detects throttle valve’s fully-closed position and sends a signal to TCM.

Detects a throttle valve position of greater than 1/2 of full throttle and sends a signal to TCM.

Used as an auxiliary vehicle speed sensor. Sends a signal when revolution sensor (installed on transmission) malfunctions.

Sends a signal, which prohibits a shift to “D

Selects shifting point suited to driving conditions in relation to a signal 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 pressure 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.

Shows TCM malfunctions, when A/T control components malfunction.

” (overdrive) position, to the TCM.

4

Input

Output

Wide open throttle position switch

Engine speed 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 A/T mode switch

Shift solenoid valve A/B

Line pressure solenoid valve

Torque converter clutch solenoid valve

Overrun clutch solenoid valve

O/D OFF indicator lamp SPORT indicator lamp

AT-13

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Self-diagnosis

After performing this procedure, place check marks for results on the “DIAGNOSTIC WORKSHEET”, AT-24. Reference pages are provided following the items.

SELF-DIAGNOSTIC PROCEDURE (With CONSULT-II)

1. Turn on CONSULT-II and touch “A/T”. If A/T is not displayed, check TCM power supply and ground circuit. Refer to AT-46. If result is NG, refer to EL section (“POWER SUPPLY ROUTING”).

SAT014K

2. Touch “SELF-DIAG RESULTS”. Display shows malfunction experienced since the last erasing operation. CONSULT-II performs REAL-TIME SELF-DIAGNOSIS. Also, any malfunction detected while in this mode will be displayed at real time.

SAT987J

Item Display Description Remarks

No failure

Initial start

Vehicle speed sensor⋅A/T (Revolution sensor)

Vehicle speed sensor⋅MTR (Meter)

Throttle (accelerator) position sensor

Shift solenoid valve A SHIFT SOLENOID/V A

Shift solenoid valve B SHIFT SOLENOID/V B

Overrun clutch solenoid valve

T/C clutch solenoid valve

A/T fluid temperature sensor/TCM power source

Engine speed signal ENGINE SPEED SIG ! Engine RPM is abnormally low during traveling.

Line pressure solenoid valve

TCM (ROM) CONTROL UNIT (ROM) ! TCM memory (ROM) is malfunctioning.

TCM (RAM) CONTROL UNIT (RAM) ! TCM memory (RAM) is malfunctioning.

NO FAILURE

****

INITIAL START

*

VHCL SPEED SEN⋅A/T

VHCL SPEED SEN⋅MTR

THROTTLE POSI SEN

OVERRUN CLUTCH S/V

T/C CLUTCH SOL/V

BATT/FLUID TEMP SEN

LINE PRESSURE S/V

****

*

! No failure has been detected.

! This is NOT a malfunction message.

Whenever shutting off a power supply to the

[]

TCM, this message appears on the screen.

! No signal input from vehicle speed sensor⋅A/T (revolution

sensor) during traveling due to disconnection, or input of abnormal signal.

! No signal input from vehicle speed sensor⋅MTR during

traveling due to disconnection, or input of abnormal signal.

! Throttle (accelerator) position sensor signal voltage is

abnormally high.

! Throttle (accelerator) position sensor signal voltage is

abnormally low with closed throttle position switch “OFF” or wide open throttle position switch “ON”.

! Specified voltage is not applied to solenoid valve due to

disconnection or shortcircuit.

! Specified voltage is not applied to solenoid valve due to

disconnection or shortcircuit.

! Specified voltage is not applied to solenoid valve due to

disconnection or shortcircuit.

! Specified voltage is not applied to solenoid valve due to

disconnection or shortcircuit.

! Supply voltage to TCM is abnormally low during traveling. ! Fluid temperature signal voltage is abnormally high

(fluid temperature is low) during traveling.

! Specified voltage is not applied to solenoid valve due to

disconnection or shortcircuit.

To be displayed in case of abnormality and no recording is made

AT-14

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Self-diagnosis (Cont’d)

SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II)

DIAGNOSIS START

$

1. Start engine and warm it up to normal

engine operating temperature.

2. Turn ignition switch to “OFF” position.

Wait at least 5 seconds.

NAT309

SAT879E

SAT244I

$

1. Set A/T mode switch to “AUTO” posi-

tion.

2. Set overdrive control switch in “ON”

position.

3. Move selector lever to “P” position.

4. Turn ignition switch to “ON” position.

(Do not start engine.)

5. Does SPORT indicator lamp come on

for about 2 seconds?

Yes

$

1. Turn ignition switch to “ACC” position.

2. Move selector lever to “D” position.

$

"

A

No

Go to 1. SPORT Indicator

#

Lamp Does Not Come On, AT-92.

AT-15

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Self-diagnosis (Cont’d)

"

A

$

1. Set overdrive control switch in “OFF”

position.

2. Depress accelerator pedal fully and

release it.

3. Turn ignition switch “ON”.

SAT881E

FAT245I

(Do not start engine.)

$

1. Move selector lever to “2” position.

2. Set overdrive control switch in “ON”

position.

$

1. Move selector lever to “1” position.

2. Set overdrive control switch in “OFF”

position.

SAT246I

SAT981F

$

Depress accelerator pedal fully and release it.

$

Check SPORT indicator lamp. Refer to JUDGEMENT OF SELFDIAGNOSIS CODE, AT-17.

$

DIAGNOSIS END

NAT309

AT-16

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Self-diagnosis (Cont’d)

JUDGEMENT OF SELF-DIAGNOSIS CODE

SPORT indicator lamps

All judgement flickers are same.

SAT819H

All circuits that can be confirmed by self-diagnosis are OK.

1st judgement flicker is longer than others.

4th judgement flicker is longer than others.

SAT797H

Shift solenoid valve A circuit is short-circuited or disconnected.

Go to SHIFT SOLENOID VALVE A, AT-63.

5th judgement flicker is longer than others.

SAT794H

Revolution sensor circuit is short-circuited or disconnected.

Go to VEHICLE SPEED SENSOR⋅A/T (REVOLUTION SENSOR), AT-50.

2nd judgement flicker is longer than others.

SAT795H

Vehicle speed sensor circuit is short-circuited or disconnected.

Go to VEHICLE SPEED SENSOR⋅MTR, AT-54.

3rd judgement flicker is longer than others.

SAT798H

Shift solenoid valve B circuit is short-circuited or disconnected.

Go to SHIFT SOLENOID VALVE B, AT-66.

6th judgement flicker is longer than others.

SAT799H

Overrun clutch solenoid valve circuit is short-circuited or disconnected.

Go to OVERRUN CLUTCH SOLENOID VALVE, AT-69.

7th judgement flicker is longer than others.

SAT796H

Throttle (accelerator) position sensor circuit is short-circuited or disconnected.

Go to THROTTLE (ACCELERATOR) POSITION SENSOR, AT-60.

t1= 2.5 seconds t2= 2.0 seconds t3= 1.0 second

SAT800H

Torque converter clutch solenoid valve circuit is short-circuited or disconnected.

Go to TORQUE CONVERTER CLUTCH SOLENOID VALVE, AT-72.

AT-17

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Self-diagnosis (Cont’d)

SPORT indicator lamps

8th judgement flicker is longer than others.

SAT801H

A/T fluid temperature sensor is disconnected or TCM power source circuit is damaged.

Go to A/T FLUID TEMPERATURE SENSOR AND TCM POWER SOURCE, AT-76.

9th judgement flicker is longer than others.

Flickers as shown below.

SAT804H

Battery power is low. Battery has been disconnected for a long time. Battery is connected conversely. (When reconnecting TCM connectors. — This is not a problem.)

Does not come on.

SAT802H

Engine speed signal circuit is short-circuited or disconnected.

Go to ENGINE SPEED SIGNAL, AT-80.

10th judgement flicker is longer than others.

SAT803H

Line pressure solenoid valve circuit is short-circuited or disconnected.

Go to LINE PRESSURE SOLENOID VALVE, AT-84.

t4= 1.0 second

SAT805H

Park/neutral position, overdrive control or throttle (accelerator) position switches circuit is disconnected or TCM is damaged.

Go to PARK/NEUTRAL POSITION, OVERDRIVE CONTROL AND THROTTLE (ACCELERATOR) POSITION SWITCHES, AT-88.

AT-18

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Self-diagnosis (Cont’d)

HOW TO ERASE SELF-DIAGNOSTIC RESULTS (With CONSULT-II)

1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait for at least 5 seconds and then turn it “ON” again.

2. Turn CONSULT-II “ON”, and touch “A/T”.

SAT014K

3. Touch “SELF-DIAG RESULTS”.

SEF949Y

SAT970J

4. Touch “ERASE”. (The self-diagnostic results will be erased.)

HOW TO ERASE SELF-DIAGNOSTIC RESULTS (Without CONSULT-II)

1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait for at least 5 seconds and then turn it “ON” again.

2. Perform “SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II)”. Refer to AT-15.

3. Turn ignition switch “OFF”. (The self-diagnostic results will be erased.)

AT-19

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Diagnosis by CONSULT-II

NOTICE

1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each solenoid). Check for time difference between actual shift timing and the CONSULT-II display. If the difference is noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical parts using applicable diagnostic procedures.

2. Shift schedule (which implies gear position) displayed on CONSULT-II and that indicated in Service Manual may differ slightly. This occurs because of the following reasons:

! Actual shift schedule has more or less tolerance or allowance, ! Shift schedule indicated in Service Manual refers to the point where shifts start. 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 shifting (which is computed by TCM).

4. Additional CONSULT-II information can be found in the Operation Manual supplied with the CONSULT-II unit.

SELF-DIAGNOSTIC RESULT TEST MODE

Refer to AT-14.

DATA MONITOR DIAGNOSTIC TEST MODE

Item Display

Vehicle speed sensor 1 (A/T) (Revolution sensor)

Vehicle speed sensor 2 (Meter)

Throttle (accelerator) position sensor

A/T fluid temperature sensor

Battery voltage BATTERY VOLT

Engine speed ENGINE SPEED

Overdrive control switch OVERDRIVE SW

P/N position switch P/N POSI SW

R position switch R POSITION SW

D position switch D POSITION SW

2 position switch 2 POSITION SW

1 position switch 1 POSITION SW

ASCD-cruise signal ASCD⋅CRUISE

VHCL/S SE⋅A/T [km/h] or [mph]

VHCL/S SE⋅MTR [km/h] or [mph]

THRTL POS SEN [V]

FLUID TEMP SE [V]

[V]

[rpm]

[ON/OFF]

Monitor item

ECU input

signals

Main

signals

X—

XX

X—

Description Remarks

! Vehicle speed computed from signal

of revolution sensor is displayed.

! Vehicle speed computed from signal

of vehicle speed sensor is displayed.

! Throttle (accelerator) position sen-

sor signal voltage is displayed.

! A/T fluid temperature sensor signal

voltage is displayed.

! Signal voltage lowers as fluid tem-

perature rises.

! Source voltage of TCM is displayed.

! Engine speed, computed from

engine speed signal, is displayed.

! ON/OFF state computed from signal

of overdrive control SW is displayed.

! ON/OFF state computed from signal

of P/N position SW is displayed.

! ON/OFF state computed from signal

of R position SW is displayed.

! ON/OFF state computed from signal

of D position SW is displayed.

! ON/OFF status, computed from sig-

nal of 2 position SW, is displayed.

! ON/OFF status, computed from sig-

nal of 1 position SW, is displayed.

! Status of ASCD cruise signal is dis-

played. ON ... Cruising state OFF ... Normal running state

When racing engine in “N” or “P” position with vehicle stationary, CONSULT-II data may not indicate 0 km/h (0 MPH).

Vehicle speed display may not be accurate under approx. 10 km/h (6 MPH). It may not indicate 0 km/h (0 MPH) when vehicle is stationary.

Engine speed display may not be accurate under approx. 800 rpm. It may not indicate 0 rpm even when engine is not running.

! This is displayed even when no

ASCD is mounted.

AT-20

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Item Display

ASCD-OD cut signal ASCD⋅OD CUT

Kickdown switch KICKDOWN SW

A/T mode switch POWER SHIFT SW

Closed throttle position switch

Wide open throttle position switch

A/T mode switch HOLD SW

Gear position GEAR

Selector lever position SLCT LVR POSI

Vehicle speed VEHICLE SPEED

Throttle (accelerator) position

Line pressure duty LINE PRES DTY

Torque converter clutch solenoid valve duty

Shift solenoid valve A SHIFT S/V A

Shift solenoid valve B SHIFT S/V B

Overrun clutch solenoid valve

Self-diagnosis display lamp (SPORT indicator lamp)

X: Applicable —: Not applicable

[ON/OFF]

CLOSED THL/SW [ON/OFF] X —

W/O THRL/P-SW [ON/OFF] X —

[ON/OFF]

[km/h] or [mph]

THROTTLE POSI [/8] — X

[%] — X

TCC S/V DUTY [%]

[ON/OFF] — X

OVERRUN/C S/V [ON/OFF] — X

SELF-D DP LMP [ON/OFF] — X

Diagnosis by CONSULT-II (Cont’d)

Monitor item

ECU input

signals

Main

signals

X—

—X

! Status of ASCD⋅OD release signal is

displayed. ON ... OD released OFF ... OD not released

! ON/OFF status, computed from sig-

nal of kickdown SW, is displayed.

! ON/OFF state computed from signal

of SPORT shift SW is displayed.

! ON/OFF status, computed from sig-

nal of closed throttle (accelerator) position SW, is displayed.

! ON/OFF status, computed from sig-

nal of wide open throttle (accelerator) position SW, is displayed.

! ON/OFF status, computed from sig-

nal of SNOW shift SW, is displayed.

! Gear position data used for compu-

tation by TCM, is displayed.

! Selector lever position data, used

for computation by TCM, is displayed.

! Vehicle speed data, used for com-

putation by TCM, is displayed.

! Throttle (accelerator) position data,

used for computation by TCM, is displayed.

! Control value of line pressure sole-

noid 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 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 overrun clutch sole-

noid valve computed by TCM from each input signal is displayed.

! Control status of SPORT indicator

lamp is displayed.

Description Remarks

! This is displayed even when no

ASCD is mounted.

! This is displayed even when no

kickdown switch is equipped.

! A specific value used for control is

displayed if fail-safe is activated due to error.

! A specific value used for control is

displayed if fail-safe is activated due to error.

Control value of solenoid is displayed even if solenoid circuit is disconnected. The “OFF” signal is displayed if solenoid circuit is shorted.

AT-21

TROUBLE DIAGNOSIS — Introduction

Introduction

The TCM receives a signal from the vehicle-speed sensor, throttle (accelerator) position sensor or park/neutral position switch and provides shift control or lock-up control via solenoid valves. Input and output signals must always be correct and stable in the operation of the A/T system. The A/T system must be in good operating condition and be free of valve seizure, solenoid valve malfunction, etc. It is much more difficult to diagnose a problem that occurs intermittently rather than continuously. Most intermittent problems are

SAT631IA

SAT632I

caused by poor electric connections or improper wiring. In this case, careful checking of suspected circuits may help prevent the replacement of good parts. A visual check only may not find the cause of the problems. A road test with CONSULT-II or a circuit tester connected should be performed. Follow the “Work Flow”. Refer to AT-26. Before undertaking actual checks, take a few minutes to talk with a customer who approaches with a driveability complaint. The customer can supply good information about such problems, especially intermittent ones. Find out what symptoms are present and under what conditions they occur. A “Diagnostic Worksheet” like the example (AT-24) should be used. Start your diagnosis by looking for “conventional” problems first. This will help troubleshoot driveability problems on an electronically controlled engine vehicle.

SEF234G

AT-22

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 % Intermittent ( times a day)

Symptoms % Vehicle does not move. (% Any position % Particular position)

% No up-shift (% 1st , 2nd % 2nd , 3rd % 3rd , O/D)

% No down-shift (% O/D , 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

( )

SPORT indicator lamp Blinks for about 8 seconds.

% Continuously lit % Not lit

Malfunction indicator lamp (MIL)

% Continuously lit % Not lit

AT-23

TROUBLE DIAGNOSIS — Introduction

Diagnostic Worksheet (Cont’d)

DIAGNOSTIC WORKSHEET

1. % Read the Fail-safe and listen to customer complaints. AT-5

2. % A/T FLUID CHECK AT-27

% Leakage (Follow specified procedure) % Fluid condition % Fluid level

3. % Perform STALL TEST and LINE PRESSURE TEST. AT-27, % Stall test — Mark possible damaged components/others.

% Torque converter one-way clutch % Reverse clutch % Forward clutch % Overrun clutch % Forward one-way clutch

% Low & reverse brake % Low one-way clutch % Engine % Line pressure is low % Clutches and brakes except high

clutch and brake band are OK

% Line pressure test — Suspected parts:

4. % Perform all ROAD TEST and mark required procedures. AT-32

4-1. Check before engine is started. AT-33

% SELF-DIAGNOSTIC PROCEDURE — Mark detected items.

% Vehicle speed sensor⋅A/T (Revolution sensor), AT-50. % Vehicle speed sensor⋅MTR, AT-54. % Throttle (accelerator) position sensor, AT-60. % Shift solenoid valve A, AT-63. % Shift solenoid valve B, AT-66. % Overrun clutch solenoid valve, AT-69. % Torque converter clutch solenoid valve, AT-88. % A/T fluid temperature sensor and TCM power source, AT-76. % Engine speed signal, AT-80. % Line pressure solenoid valve, AT-84. % Park/neutral position, overdrive control, A/T check and throttle

(accelerator) position switches, AT-88.

% Battery % Others

4-2. Check at idle AT-35

% 1. SPORT Indicator Lamp Does Not Come On, AT-92. % 2. SPORT or SNOW Indicator Lamp Does Not Come On, AT-95. % 3. O/D OFF Indicator Lamp Does Not Come On, AT-95. % 4. SPORT Indicator Lamp Does Not Come On, AT-96. % 5. Engine Cannot Be Started In “P” And “N” Position, AT-97. % 6. In “P” Position, Vehicle Moves Forward Or Backward When Pushed, AT-97. % 7. In “N” Position, Vehicle Moves, AT-98. % 8. Large Shock. “N” , “R” Position, AT-99. % 9. Vehicle Does Not Creep Backward In “R” Position, AT-100. % 10. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position, AT-101.

4-3. Cruise test AT-36,

Part-1

% 11. Vehicle Cannot Be Started From D % 12. A/T Does Not Shift: D % 13. A/T Does Not Shift: D % 14. A/T Does Not Shift: D

, D2Or Does Not Kickdown: D4, D2, AT-103.

1

, D3, AT-104.

2

, D4, AT-105.

3

, AT-102.

1

% 15. A/T Does Not Perform Lock-up, AT-106. % 16. A/T Does Not Hold Lock-up Condition, AT-107. % 17. Lock-up Is Not Released, AT-107. % 18. Engine Speed Does Not Return To Idle (Light Braking D

, D3), AT-108.

4

AT-30

AT-39

AT-24

TROUBLE DIAGNOSIS — Introduction

Diagnostic Worksheet (Cont’d)

4. Part-2

AT-41

% 19. Vehicle Does Not Start From D1, AT-109. % 12. A/T Does Not Shift: D1, D2Or Does Not Kickdown: D4, D2, AT-103. % 13. A/T Does Not Shift: D

, D3, AT-104.

2

% 14. A/T Does Not Shift: D3, D4, AT-105. Part-3

% 20. A/T Does Not Shift: D

, D1When Depressing Accelerator Pedal, AT-5.

2

AT-42

% 21. A/T Does Not Shift: D4, D3When Overdrive Control Switch “ON” ,

“OFF”, AT-111.

% 18. Engine Speed Does Not Return To Idle (Engine Brake In D3), AT-108. % 22. A/T Does Not Shift: D

, 22, When Selector Lever “D” , “2” Position,

3

AT-111.

% 18. Engine Speed Does Not Return To Idle (Engine Brake In 22), AT-108. % 23. A/T Does Not Shift: 22, 11, When Selector Lever “2” , “1” Position,

AT-5.

% 24. Vehicle Does Not Decelerate By Engine Brake, AT-112. % SELF-DIAGNOSTIC PROCEDURE — Mark detected items.

% Vehicle speed sensor⋅A/T (Revolution sensor), AT-50. % Vehicle speed sensor⋅MTR, AT-54. % Throttle (accelerator) position sensor, AT-60. % Shift solenoid valve A, AT-63. % Shift solenoid valve B, AT-66. % Overrun clutch solenoid valve, AT-69. % Torque converter clutch solenoid valve, AT-69. % A/T fluid temperature sensor and TCM power source, AT-76. % Engine speed signal, AT-80. % Line pressure solenoid valve, AT-84. % Park/neutral position, overdrive control, A/T check and throttle

(accelerator) position switches, AT-88.

% Battery % Others

5. % For self-diagnosis NG items, inspect each component. Repair or replace the

AT-14

damaged parts.

6. % Perform all ROAD TEST and re-mark required procedures. AT-32

7. % Perform the Diagnostic Procedures for all remaining items marked NG. Repair or

replace the damaged parts.

AT-46

AT-43 Refer to the Symptom Chart when you perform the procedures. (The chart also shows some other possible symptoms and the component inspection orders.)

8. % Erase self-diagnosis code from TCM memories. AT-19

AT-25

TROUBLE DIAGNOSIS — Introduction

Work Flow

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, each customer feels differently about a problem. It is important to fully understand the symptoms or conditions for a customer complaint. Make good use of the two sheets provided, “INFORMATION FROM CUSTOMER” and “DIAGNOSTIC WORKSHEET”, to perform the best troubleshooting possible.

CHECK IN

$

LISTEN TO CUSTOMER COMPLAINTS AND FILL OUT “INFORMATION FROM CUSTOMER”, AT-23. Check for any Service Bulletins.

$

CHECK A/T FLUID LEVEL AND CONDITION. IF NG, PLACE CHECK ON THE DIAGNOSTIC WORKSHEET, AT-24.

$

PERFORM STALL TEST AND LINE PRESSURE TEST.

$

PERFORM ROAD TEST WITH SELF-DIAGNOSIS AND PLACE CHECKS FOR NG ITEMS ON THE DIAGNOSTIC WORKSHEET.

&

Refer to FAIL-SAFE Service Notice or Precautions, AT-5.

Refer to A/T Fluid Check, AT-27.

Refer to Stall Test and Line Pressure Test, AT-27, AT-30.

Follow ROAD TEST procedure, AT-32.

NG items including self-diagnostic item

$

! FOR SELF-DIAGNOSIS NG ITEMS:

-INSPECT EACH COMPONENT.

-REPAIR/REPLACE.

! PERFORM ROAD TEST AND PLACE CHECKS FOR NG

ITEMS ON THE DIAGNOSTIC WORKSHEET AGAIN.

$

! FOR ALL REMAINING MALFUNCTIONS:

-INSPECT EACH COMPONENT.

-REPAIR/REPLACE.

! PERFORM ROAD TEST AND CONFIRM ALL MALFUNC-

TIONS ARE ELIMINATED.

$

ERASE SELF-DIAGNOSIS CODE FROM TCM MEMORIES.

$

PERFORM FINAL CHECK

OK

$

CHECK OUT

&

! Refer to self-diagnosis, AT-14. ! Perform ROAD TEST for all items.

Refer to ! ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION,

AT-14, AT-20.

! TROUBLE DIAGNOSIS FOR SELF-DIAGNOSIS CODE,

AT-50, AT-88.

! DIAGNOSTIC PROCEDURES FOR SYMPTOMS, AT-26,

AT-112.

! Symptom Chart, AT-43.

Refer to HOW TO ERASE SELF-DIAGNOSIS RESULTS, AT-19.

Refer to SELF-DIAGNOSIS CONFIRMATION PROCEDURE, AT-50 - AT-84.

AT-26

TROUBLE DIAGNOSIS — Basic Inspection

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 brake, place selector lever in “D” position and wait a few minutes.

3. Stop engine.

4. Check for fresh leakage.

SAT801A

FLUID CONDITION CHECK

Fluid color Suspected problem

Dark or black with burned odor Wear of frictional material

Water contamination — Road water entering through filler tube or breather

Oxidation — Over or under filling, — Overheating

SAT638A

Milky pink

Varnished fluid, light to dark brown and tacky

FLUID LEVEL CHECK

Refer to MA section (“Checking A/T Fluid”, “CHASSIS AND BODY MAINTENANCE”).

SAT647B

SAT513G

Stall Test

STALL TEST PROCEDURE

1. Check A/T and engine fluid levels. If necessary, add.

2. Drive vehicle for approx. 10 minutes or until engine oil and ATF 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 put a mark on point of specified

engine rpm on indicator.

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 note the engine stall revolution and immediately release throttle.

! During test, never hold throttle wide open for more than 5

seconds.

Stall revolution:

2,450 - 2,700 rpm

SAT514G

AT-27

TROUBLE DIAGNOSIS — Basic Inspection

Stall Test (Cont’d)

8. Move selector lever 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 “2”, “1” and “R” positions.

SAT771B

JUDGEMENT OF STALL TEST

The test result and possible damaged components relating to each result are shown in the illustration. In order to pinpoint the possible damaged components, follow the WORK FLOW as shown in AT-26.

Note

Stall revolution is too high in “D” or “2” position:

! Slippage occurs in 1st gear but not in 2nd and 3rd gears. ..... Low one-way clutch slippage

! Slippage occurs at the following gears:

1st through 3rd gears in “D” position and engine brake functions. 1st and 2nd gears in “2” position and engine brake functions with accelerator pedal released (fully closed

throttle). ..... Forward clutch or forward one-way clutch slippage

Stall revolution is too high in “R” position:

! Engine brake does not function in “1” position. ..... Low & reverse brake slippage

! Engine brake functions in “1” position. ..... Reverse clutch slippage

Stall revolution within specifications:

! Vehicle does not achieve speed of more than 80 km/h (50 MPH). ..... One-way clutch seizure 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 gears in “D” position. ..... Brake band slippage

Stall revolution less than specifications:

! Poor acceleration during starts. ..... One-way clutch seizure in torque converter

AT-28

TROUBLE DIAGNOSIS — Basic Inspection

JUDGEMENT OF STALL TEST

Stall Test (Cont’d)

AT-29

SAT392H

TROUBLE DIAGNOSIS — Basic Inspection

Line Pressure Test

LINE PRESSURE TEST PORTS

! Location of line pressure test ports. ! Always replace line pressure plugs as they are self-

sealing bolts.

SAT209GA

LINE PRESSURE TEST PROCEDURE

1. Check A/T and engine fluid levels. If necessary, add fluid.

2. Drive vehicle for approx. 10 minutes or until engine oil and ATF reach operating temperature.

ATF operating temperature:

50 - 80°C (122 - 176°F)

SAT647B

SAT518GB

SAT519GA

3. Install pressure gauge to corresponding line pressure port.

AT-30

TROUBLE DIAGNOSIS — Basic Inspection

Line Pressure Test (Cont’d)

4. Set parking brake and block wheels.

! Continue to depress brake pedal fully while line pressure

test is being performed at stall speed.

SAT513G

5. Start engine and measure line pressure at idle and stall speed.

! When measuring line pressure at stall speed, follow the

stall test procedure.

Line pressure:

Refer to SDS, AT-196.

SAT493G

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. ! Mal-adjustment of throttle position sensor

Line pressure is low. ! Mal-adjustment of throttle position sensor

At stall speed

! Oil pump wear ! Control piston damage ! Pressure regulator valve or plug sticking ! Spring for pressure regulator valve damaged ! A/T fluid pressure leakage between oil strainer and pressure regulator valve ! Clogged strainer

! Fluid pressure leakage between manual valve and particular clutch ! For example, line pressure is:

— Low in “R” and “1” positions, — Normal in “D” and “2” positions. Then, fluid leakage exists at or around low and reverse brake circuit. Refer to “CLUTCH AND BAND CHART”, AT-11.

! A/T fluid temperature sensor damaged ! Line pressure solenoid valve sticking ! Short circuit of line pressure solenoid valve circuit ! Pressure modifier valve sticking ! Pressure regulator valve or plug sticking ! Open in dropping resistor circuit

! Line pressure solenoid valve sticking ! Short circuit of line pressure solenoid valve circuit ! Pressure regulator valve or plug sticking ! Pressure modifier valve sticking ! Pilot valve sticking

AT-31

TROUBLE DIAGNOSIS — Basic Inspection

Road Test

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

SAT786A

! 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 “ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION” and “DIAGNOSTIC PROCEDURES FOR SYMPTOMS”, AT-14

- AT-20 and AT-92 - AT-112.

SAT496G

AT-32

TROUBLE DIAGNOSIS — Basic Inspection

Road Test (Cont’d)

1. CHECK BEFORE ENGINE IS STARTED

1. Park vehicle on flat surface.

2. Turn ignition switch to “OFF” position.

NAT309

SAT853E

$

1. Set A/T mode switch to “AUTO” posi-

tion.

2. Move selector lever to “P” position.

3. Turn ignition switch to “ON” position.

(Do not start engine.)

4. Does SPORT indicator lamp come on

for about 2 seconds?

Yes

$

Does SPORT indicator lamp flicker for about 8 seconds?

No

$

1. Set A/T mode switch to “SPORT” posi-

tion.

2. Does SPORT indicator lamp come on?

Yes

$

Set overdrive control switch to “OFF” position.

No

Go to 1. SPORT Indicator

#

Lamp Does Not Come On, AT-92.

Yes

Perform self-diagnosis.

#

Refer to SELF-DIAGNOSIS PROCEDURE, AT-14.

No

Go to 2. SPORT or SNOW

#

(*) Indicator Lamp Does Not Come On, AT-95.

NAT309

SAT857E

NAT232

$

Does O/D OFF indicator lamp come on?

Yes

$

"

A

(Go to next page.)

No

Go to 3. O/D OFF Indica-

#

tor Lamp Does Not Come On, AT-95.

AT-33

TROUBLE DIAGNOSIS — Basic Inspection

Road Test (Cont’d)

"

A

$

Depress brake pedal and move selector lever to “D” position.

SAT869E

SAT754A

NAT309

$

1. Set A/T mode switch to “AUTO” posi-

tion.

2. Depress and release accelerator pedal

quickly.

$

Does SPORT indicator lamp come on for about 3 seconds after accelerator pedal is depressed?

Yes

$

Turn ignition switch to “OFF” position.

$

Perform self-diagnosis and note NG items: Refer to SELF-DIAGNOSIS PROCEDURE, AT-14.

$

Go to “2. Check at idle”, AT-35.

No

Go to 4. SPORT Indicator

#

Lamp Does Not Come On, AT-96.

AT-34

TROUBLE DIAGNOSIS — Basic Inspection

Road Test (Cont’d)

2. CHECK AT IDLE

No

#

Yes

#

Yes

#

Yes

#

Yes

#

No

#

No

#

SAT796A

SAT797A

1. Park vehicle on flat surface.

2. Turn ignition switch to “OFF” position.

3. Move selector lever to “P” or “N” posi-

tion.

4. Turn ignition switch to start position.

5. Is engine started?

Yes

$

1. Turn ignition switch to “OFF” position.

2. Move selector lever to “D”, “1”, “2” or

“R” position.

3. Turn ignition switch to start position.

4. Is engine started?

No

$

1. Turn ignition switch to “OFF” position.

2. Move selector lever to “P” position.

3. Release parking brake.

4. Push vehicle forward or backward.

5. Does vehicle move when it is pushed

forward or backward?

No

$

1. Apply parking brake.

2. Move selector lever to “N” position.

3. Turn ignition switch to “START” position

and start engine.

4. Release parking brake.

5. Does vehicle move forward or back-

ward?

No

$

1. Apply foot brake.

2. Move selector lever to “R” position.

3. Is there large shock when changing

from “N” to “R” position?

No

$

1. Release foot brake for several seconds.

2. Does vehicle creep backward when

foot brake is released?

Yes

$

1. Move selector lever to “D”, “1” and “2”

position and check if vehicle creeps forward.

2. Does vehicle creep forward in all three

positions?

Yes

$

Go to “3. Cruise test”, AT-36.

Go to “5. Engine Cannot Be Started In “P” and “N” Position”, AT-97.

Go to “6. In “P” Position, Vehicle Moves Forward Or Backward When Pushed”, AT-112.

Go to “7. In “N” Position, Vehicle Moves”, AT-98.

Go to “8. Large Shock. “N” , “R” Position”, AT-99.

Go to “9. Vehicle Does Not Creep Backward In “R” Position”, AT-100.

Go to “10. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position”, AT-101.

AT-35

TROUBLE DIAGNOSIS — Basic Inspection

Road Test (Cont’d)

3. CRUISE TEST

! Check all items listed in Parts 1 through 3.

With CONSULT-II

! Using CONSULT-II, conduct a cruise test and record the result. ! Print the result and ensure that shifts and lock-ups take place

as per “Shift Schedule”.

SAT601J

CONSULT-II setting procedure

1. Turn off ignition switch.

2. Connect “CONSULT-II” to Data link connector for CONSULT-II. Data link connector for CONSULT-II is located in instrument lower panel on driver side.

NAT233

NAT234

SAT586J

3. Turn on ignition switch.

4. Touch “START”.

SAT250J

5. Touch “A/T”.

AT-36

TROUBLE DIAGNOSIS — Basic Inspection

Road Test (Cont’d)

6. Touch “DATA MONITOR”.

SAT252K

7. Touch “MAIN SIGNALS” to set recording condition.

8. See “Numerical Display”, “Barchart Display” or “Line Graph Display”.

9. Touch “START”.

SAT253K

SAT236K

SAT237K

10. When performing cruise test, touch “Store Data”.

11. After finishing cruise test part 1, touch “STOP”.

SAT254K

12. Touch “STORE”.

AT-37

TROUBLE DIAGNOSIS — Basic Inspection

Road Test (Cont’d)

13. Touch “DISPLAY”.

SAT608J

14. Touch “PRINT”.

15. Check the monitor data printed out.

16. Continue cruise test part 2 and 3.

SAT238K

NAT235

Without CONSULT-II

! Throttle (accelerator) position can be checked by voltage

across terminals

"

34

and

"

35

of TCM.

AT-38

TROUBLE DIAGNOSIS — Basic Inspection

Road Test (Cont’d)

CRUISE TEST — Part 1

Drive vehicle for approx. 10 minutes to warm engine oil and ATF up to operating temperature.

ATF operating temperature:

50 - 80°C (122 - 176°F)

$

1. Park vehicle on flat surface.

SAT774B

SAT775B

2. Set overdrive control switch to “ON”

position.

3. Move selector lever to “P” position.

4. Start engine.

$

Move selector lever to “D” position.

$

Accelerate vehicle by constantly depressing accelerator pedal halfway.

SAT495G

SAT401H

$

Does vehicle start from D1?

Read gear position.

Yes

$

Does A/T shift from D1to D2at the specified speed?

Read gear position, throttle open-

ing and vehicle speed. Specified speed when shifting from D

to D2:

1

Refer to Shift schedule, AT-196.

Yes

$

Does A/T shift from D2to D3at the specified speed?

Read gear position, throttle posi-

tion and vehicle speed. Specified speed when shifting from D

to D3:

2

Refer to Shift schedule, AT-104.

Yes

$

"

A

(Go to next page.)

No

Go to “11. Vehicle Cannot

#

Be Started From D AT-102.

No

Go to “12. A/T Does Not

#

Shift: D

, D2Or Does

1

Not Kickdown: D AT-196.

No

Go to “13. A/T Does Not

#

Shift: D

, D3”, AT-104.

2

1

, D2”,

4

”,

AT-39

TROUBLE DIAGNOSIS — Basic Inspection

Road Test (Cont’d)

"

A

SAT402H

SAT403H

$

Does A/T shift from D3to D4at the specified speed?

Read gear position, throttle posi-

tion and vehicle speed. Specified speed when shifting from D

to D4:

3

Refer to Shift schedule, AT-196.

Yes

$

Does A/T perform lock-up at the specified speed?

Read vehicle speed, throttle posi-

tion when lock-up duty becomes

94%. Specified speed when lock-up occurs:

Refer to Shift schedule, AT-196.

Yes

$

Does A/T hold lock-up condition for more than 30 seconds?

Yes

No

Go to “14. A/T Does Not

#

Shift: D

No

Go to “15. A/T Does Not

#

Perform Lock-up”, AT-106.

No

Go to “16. A/T Does Not

#

Hold Lock-up Condition”,

, D4”, AT-105.

3

AT-107.

$

1. Release accelerator pedal.

2. Is lock-up released when accelerator pedal is released?

Yes

$

1. Decelerate vehicle by applying foot brake lightly.

2. Does engine speed return to idle smoothly when A/T is shifted from D D

?

3

Read gear position and engine speed.

Yes

$

1. Stop vehicle.

2. Go to “Cruise test — Part 2”, AT-41.

No

Go to “17. Lock-up Is Not

#

Released”, AT-107.

No

Go to “18. Engine Speed

#

Does Not Return To Idle (Light Braking D

to

4

AT-108.

, D3)”,

4

AT-40

TROUBLE DIAGNOSIS — Basic Inspection

Road Test (Cont’d)

CRUISE TEST — Part 2

SAT495G

SAT404H

SAT405H

SAT124I

1. Confirm overdrive control switch is in “ON” position.

2. Confirm selector lever is in “D” position.

3. Accelerate vehicle by half throttle again.

4. Does vehicle start from D

?

1

Read gear position.

Yes

$

1. Accelerate vehicle to 80 km/h (50 MPH) as shown in illustration.

2. Release accelerator pedal and then quickly depress it fully.

3. Does A/T shift from D

to D2as soon

4

as accelerator pedal is depressed fully?

Read gear position and throttle position.

Yes

$

Does A/T shift from D2to D3at the specified speed?

Read gear position, throttle posi-

tion and vehicle speed. Specified speed when shifting from D

to D3:

2

Refer to Shift schedule, AT-196.

Yes

$

1. Release accelerator pedal after shifting from D

2. Does A/T shift from D

to D3.

2

to D4and does

3

vehicle decelerate by engine brake?

Read gear position, throttle position and vehicle speed.

Yes

$

1. Decelerate to 10 km/h (6 MPH) with accelerator pedal released and then quickly depress it fully.

2. Does A/T shift from D

to D1as soon

2

as accelerator pedal is depressed fully?

Yes

$

1. Stop vehicle.

2. Go to “Cruise test — Part 3”, AT-42.

No

Go to “19. Vehicle Does

#

Not Start From D AT-109.

No

Go to “12. A/T Does Not

#

Shift: D

1

Not Kickdown: D AT-103.

No

Go to “13. A/T Does Not

#

Shift: D

2

No

Go to “14. A/T Does Not

#

Shift: D

3

No

Go to “20. A/T Does Not

#

Shift: D

2

Depressing Accelerator Pedal”, AT-110.

”,

1

, D2Or Does

, D2”,

4

, D3”, AT-104.

, D4”, AT-105.

, D1When

AT-41

TROUBLE DIAGNOSIS — Basic Inspection

Road Test (Cont’d)

CRUISE TEST — Part 3

1. Confirm overdrive control switch is in “ON” position.

2. Confirm selector lever is in “D” position.

$

Accelerate vehicle using half-throttle to D4.

$

SAT812A

Release accelerator pedal.

$

Set overdrive control switch to “OFF” position while driving in D

.

4

SAT813A

SAT776BA

SAT791GA

$

Does A/T shift from D4to D3(O/D OFF)?

Read gear position and vehicle speed.

Yes

$

Does vehicle decelerate by engine brake?

Yes

$

Move selector lever from “D” to “2” position while driving in D

(O/D OFF).

3

$

Does A/T shift from D3(O/D OFF) to 22?

Read gear position.

Yes

$

Does vehicle decelerate by engine brake?

Yes

$

1. Move selector lever from “2” to “1” position while driving in 2

2. Does A/T shift from 22to 11position?

.

2

Read gear position.

Yes

$

Does vehicle decelerate by engine brake?

Yes

$

1. Stop vehicle.

2. Perform self-diagnosis. Refer to SELFDIAGNOSTIC PROCEDURE, AT-14.

No

Go to “21. A/T Does Not

#

Shift: D Overdrive Control Switch

, D3, When

4

“ON” , “OFF””, AT-111.

No

Go to “18. Engine Speed

#

Does Not Return To Idle (Light Braking D AT-108.

No

Go to “22. A/T Does Not

#

Shift: D Selector Lever “D” , “2”

, 22, When

3

Position”, AT-111.

No

Go to “18. Engine Speed

#

Does Not Return To Idle (Light Braking D AT-108.

No

Go to “23. A/T Does Not

#

Shift: 2 Selector Lever “2” , “1”

, 11, When

2

Position”, AT-112.

No

Go to “24. Vehicle Does

#

Not Decelerate By Engine Brake”, AT-112.

, D3)”,

4

, D3)”,

4

SAT778B

AT-42

TROUBLE DIAGNOSIS — General Description

Symptom Chart

#

&

69,

123

151,

155

OFF vehicle

157,

157

165

161,

171

175

Reference page (AT- )

&

114

54, 60,8030

27,

115

ON vehicle

63,

66,8469,7276,

139

113

113 113

Numbers are arranged in order of probability. Perform inspections starting with number one and work up. Circled numbers indicate that the transmission must be removed from the vehicle.

Fluid level

Control linkage

Park/neutral position switch

Throttle (accelerator) position sensor (Adjustment)

Revolution sensor and vehicle speed sensor

Engine speed signal

Engine idling speed

Line pressure

Control valve assembly

Shift solenoid valve A

Shift solenoid valve B

Line pressure solenoid valve

Torque converter clutch solenoid valve

Overrun clutch solenoid valve

A/T fluid temperature sensor

Accumulator N-D

Accumulator 1-2

Accumulator 2-3

Accumulator 3-4 (N-R)

Ignition switch and starter

Torque converter

Oil pump

Reverse clutch

High clutch

Forward clutch

Forward one-way clutch

Overrun clutch

Low one-way clutch

Low & reverse brake

Brake band

Engine does not start in “N”, “P” positions. . 2 3 ................1.......... .

Engine starts in position other than “N” and “P”. . 1 2 ................. .......... .

"

Transmission noise in “P” and “N” positions. 1 . . 3 4 5 . 2 ............

Vehicle moves when changing into “P” position or parking gear does not disengage when shifted out

.1............................

7"6 ........ .

"

2

of “P” position.

Vehicle runs in “N” position. . 1 ................2...

Vehicle will not run in “R” position (but runs in “D”, “2” and “1” positions). Clutch slips.

.1.....24..3..........

"

4 ."3 ."5 ... .

"

5"6"7 ."8 ."9 ..

Very poor acceleration.

"

Vehicle braked when shifting into “R” position. 1 2 .....35..4........ ...

Sharp shock in shifting from “N” to “D” position. . . . 2 . 5137 . . 6 . . 48 .... ....

Vehicle will not run in “D” and “2” positions (but runs in “1” and “R” position).

.1.........................

Vehicle will not run in “D”, “1” and “2” positions (but runs in “R” position). Clutch slips.

1......24..3...5......

6"8 ."9 .."7 .

"

10

..... .

"

2 .. .

"

6"7"8"9 .

"

10

.. .

Very poor acceleration.

Clutches or brakes slip somewhat in starting. 1 2 . 3 . . . 4 6 . . 5 . . . 7 . . 8 .

"

13"12"10

"

.

9 ...

"

11

..

Excessive creep. . .....1............. .......... .

"

No creep at all. 1 ......23...........

Failure to change gear from “D

Too high a gear change point from “D

” to “D3”, from “D3” to “D4”.

“D

2

Gear change directly from “D

Engine stops when shifting lever into “R”, “D”, “2” and “1”.

Too sharp a shock in change from “D

” to “D2”. . 2 1 . 5 . . . 4 3 . . . . . . . . . . . ........

1

” to “D3”. . 2 1 . 5 . . . 4 . 3 . . . . . . . . . . . .

2

” to “D4”. . 2 1 . 4 . . . . 3 . . . . 5 . . . . . . ........

3

” to “D2”, from

1

” to “D3” occurs. 1 ...............2... .........

1

...12....34................... .

......1.3...2.......

” to “D2”. . . . 1 . . . 2 4 . . . . . 5 . 3 . . . . ........

1

” to “D3”. . . . 1 . . . 2 4 . . . . . . . . 3 . . . . .

2

6"5 .."4 ..... .

"

6 .

"

6 ....."7 .

"

6 .

"

3 .

"

4 ......... .

"

6 .

"

5 ....."6 .

#

Parking pawl components

AT-43

TROUBLE DIAGNOSIS — General Description

Symptom Chart (Cont’d)

Accumulator 1-2

Accumulator 2-3

#

Accumulator 3-4 (N-R)

Ignition switch and starter

Reference page (AT- )

&

114

54, 60,8030

27, 115

ON vehicle

63,

66,8469,7276,

139

113

113 113

Numbers are arranged in order of probability. Perform inspections starting with number one and work up. Circled numbers indicate that the transmission must be removed from the vehicle.

Fluid level

Control linkage

Park/neutral position switch

Throttle (accelerator) position sensor (Adjustment)

Revolution sensor and vehicle speed sensor

Engine speed signal

Engine idling speed

Line pressure

Control valve assembly

Shift solenoid valve A

Shift solenoid valve B

Line pressure solenoid valve

Torque converter clutch solenoid valve

Overrun clutch solenoid valve

A/T fluid temperature sensor

Accumulator N-D

Too sharp a shock in change from

” to “D4”.

“D

3

Almost no shock or clutches slipping in change from

” to “D2”.

“D

1

Almost no shock or slipping in change from “D

”.

“D

3

Almost no shock or slipping in change from “D “D

”.

4

Vehicle braked by gear change from “D

” to “D2”. 1 . . . . . . . . . . . . . . . . . . . . .

1

” to “D3”. 1 . . . . . . . . . . . . . . . . . . . . ........

2

” to “D4”. 1 . . . . . . . . . . . . . . . . . . . . .

3

...1...24.........3.......

1..2...35.......4............

” to

2

1..2...35........4.....

” to

3

1..2...35.........4....

Maximum speed not attained. Acceleration poor. 1 . 2 .....534.........

Failure to change gear from “D

Failure to change gear from “D “D

” to “D2”.

4

Failure to change gear from “D

” to “D1”.

“D

3

Gear change shock felt during deceleration by releasing accelerator pedal.

Too high a change point from “D to “D

”, from “D2” to “D1”.

2

Kickdown does not operate when depressing pedal

” within kickdown vehicle speed.

in “D

4

” to “D3”. 1 . . 2 . . . . 6 4 . 5 . 3 . . . . . . . .....

4

” to “D2” or from

3

” to “D1” or from

2

1..2....534............

...1...24....3................ .

” to “D3”, from “D3”

4

...12......................... .

...12....34................... .

Kickdown operates or engine overruns when depressing pedal in “D speed limit.

” beyond kickdown vehicle

4

Races extremely fast or slips in changing from “D to “D

” when depressing pedal.

3

Races extremely fast or slips in changing from “D

” when depressing pedal.

to “D

2

Races extremely fast or slips in changing from “D

” when depressing pedal.

to “D

2

Races extremely fast or slips in changing from “D

” to “D1” when depressing pedal.

or “D

3

...21....34................... .

”

4

1..2...35..4...........

”

4

1..2...365.4............

”

3

1..2...35..4..6..7.....

”

4

1..2...35..4............

Vehicle will not run in any position. 1 2 .....3...4........

Transmission noise in “D”, “2”, “1” and “R” positions. 1 ...................

&

69,

123

Torque converter

"

11"10

"

9"5 ."6 ...."8"7

"

2 ......... .

OFF vehicle

151,

155

Oil pump

Reverse clutch

"

6 ....."7 .

"

6 ....."7 .

"

2"4 ..."5"3 ..

"

4 .."3"2 ... .

"6"

7 ...."9"8 .

"

6 ....."7 .

"

7 ..."6 ."8 .

"

6"7 ..... .

"

10

157,

161,

165

171

Forward one-way clutch

Overrun clutch

Low one-way clutch

"

6 .."5 .

Low & reverse brake

High clutch

157

Forward clutch

"

8 ."7 ..

"

8 ...."7 .

"

9 ...."8 .

"

6"7 ."8 .. .

Brake band

6 .

2 .

#

175

Parking pawl components

"

10

AT-44

TROUBLE DIAGNOSIS — General Description

Symptom Chart (Cont’d)

Accumulator 1-2

Accumulator 2-3

#

&

139,

123

Accumulator 3-4 (N-R)

Ignition switch and starter

Torque converter

"7"8"9"

"

14

"

2"3"4"5"7 ."8 ."9"6 .

"

9 ......... .

"

7 ......... .

OFF vehicle

151,

155

Oil pump

Reverse clutch

"

2"3"5 ."6 ."7"4 .

High clutch

157

Forward clutch

11

Forward one-way clutch

.

157,

165

Overrun clutch

Low one-way clutch

"

9 .."8 .

"

8 ."9 ..

"

6 ."7 ..

"

12

.

"

10

..

161,

175

171

Low & reverse brake

Brake band

"

2 ..

"

13"10

.

"

9 .

Reference page (AT- )

&

114

54, 60,8030

27, 115

ON vehicle

63,

66,8469,7276,

139

113

113 113

Numbers are arranged in order of probability. Perform inspections starting with number one and work up. Circled numbers indicate that the transmission must be removed from the vehicle.

Fluid level

Control linkage

Park/neutral position switch

Throttle (accelerator) position sensor (Adjustment)

Revolution sensor and vehicle speed sensor

Engine speed signal

Engine idling speed

Line pressure

Control valve assembly

Shift solenoid valve A

Shift solenoid valve B

Line pressure solenoid valve

Torque converter clutch solenoid valve

Overrun clutch solenoid valve

A/T fluid temperature sensor

Accumulator N-D

Failure to change from “D3” to “2” when changing lever into “2” position.

Gear change from “2

” to “22” in “2” position. . . 1 ................. .......... .

1

.712....654..3............

Engine brake does not operate in “1” position. . 2134 . . . 65 . . . 7...... ......

Gear change from “1

Does not change from “1

Large shock changing from “1 tion.

” to “12” in “1” position. . 2 1 ................. .......... .

1

” to “11” in “1” position. . . 1 . 2 . . . 4 3 . . . 5 ...... ......

2

” to “11” in “1” posi-

2

........1...................

Transmission overheats. 1 . . 3 . . 2 4 6 . . 5 ........

ATF shoots out during operation. White smoke emitted from exhaust pipe during

1.....................

operation.

Offensive smell at fluid charging pipe. 1 ...................

Torque converter is not locked up. . . 3124 .68 . . . 7 . 5 .....

Torque converter clutch piston slip 1 . . 2 . . . 3 6 . . 5 4 .......

Lock-up point is extremely high or low. . . . 1 2 . . . 4 . . . 3 ....... .......... .

A/T does not shift to “D drive control switch “ON”.

” when driving with over-

4

..213..864...57...........

Engine is stopped at “R”, “D”, “2” and “1” positions. 1 .......543.2................. .

#

Parking pawl components

AT-45

TROUBLE DIAGNOSIS — General Description

TCM Terminals and Reference Value

PREPARATION

! Measure voltage between each terminal and terminal

by following “TCM INSPECTION TABLE”.

SAT010C

TCM HARNESS CONNECTOR TERMINAL LAYOUT

"

15

or

"

48

TCM INSPECTION TABLE

(Data are reference values.)

Terminal

No.

Line pressure solenoid

1

valve

Line pressure solenoid

2

valve (with dropping resistor)

Torque converter clutch

3

solenoid valve

5* DT1

6* DT2 — —

7* DT3 — —

9—

*: These terminals are connected to the ECM.

Item Condition

When releasing accelerator pedal after warming up engine.

When depressing accelerator pedal fully after warming up engine.

When releasing accelerator pedal after warming up engine.

When depressing accelerator pedal fully after warming up engine.

When A/T performs lock-up. 8 - 15V

When A/T does not perform lock- up. Approximately 0V

1.5 - 3.0V

0.5V or less

4 - 14V

0.5V or less

——

YAT296

Judgement

standard

AT-46

TROUBLE DIAGNOSIS — General Description

TCM Terminals and Reference Value (Cont’d)

Terminal

No.

10 Power source

11 Shift solenoid valve A

12 Shift solenoid valve B

Closed throttle position

16

17

18

19 Power source Same as No. 104

20

22 Overdrive control switch

26

27

28 Ground — —

switch [in throttle (accelerator) position switch]

Wide open throttle position switch [in throttle (accelerator) position switch]

A/T mode switch “SNOW”

Overrun clutch solenoid valve

Park/neutral “1” position switch

Park/neutral “2” position switch

Item Condition

When turning ignition switch to “ON”. Battery voltage

When turning ignition switch to “OFF”.

When shift solenoid valve A operates. (When driving in “D

When shift solenoid valve A does not operate. (When driving in “D

When shift solenoid valve B operates. (When driving in “D

When shift solenoid valve B does not operate. (When driving in “D

When releasing accelerator pedal after warming up engine.

When depressing accelerator pedal after warming up engine.

When depressing accelerator pedal more than half-way after warming up engine.

When releasing accelerator pedal after warming up engine.

When setting A/T mode switch in “SNOW” position.

When setting A/T mode switch in other position.

When overrun clutch solenoid valve operates.

When overrun clutch solenoid valve does not operate.

When setting overdrive control switch in “ON” position

When setting overdrive control switch in “OFF” position

When setting selector lever to “1” position.

When setting selector lever to other positions.

When setting selector lever to “2” position.

When setting selector lever to other positions.

” or “D4”.)

1

” or “D3”.)

2

” or “D2”.)

1

” or “D4”.)

3

Approximately 0V

Battery voltage

Approximately 0V

Battery voltage

Approximately 0V

Battery voltage

Approximately 0V

Battery voltage

Approximately 0V

Battery voltage

Approximately 0V

Battery voltage

Approximately 0V

Battery voltage

1V or less

Battery voltage

Approximately 0V

Battery voltage

Approximately 0V

Judgement

standard

AT-47

TROUBLE DIAGNOSIS — General Description

TCM Terminals and Reference Value (Cont’d)

Terminal

No.

28

29

34

35

36

39 Engine speed signal

Power source (Back-up)

Revolution sensor (Measure in AC rang)

Park/neutral “D” position switch

Park/neutral “R” position switch

Park/neutral “N” or “P” position switch

Item Condition

Judgement

standard

When turning ignition switch to

or

“OFF”.

When turning ignition switch to “ON”. Battery voltage

When vehicle cruises at 30 km/h (19 MPH).

When vehicle parks. 0V

When setting selector lever to “D” position.

When setting selector lever to other positions.

When setting selector lever to “R” position.

When setting selector lever to other positions.

When setting selector lever to “N” or “P” position.

When setting selector lever to other positions.

When engine runs at idle speed. 0.8V

When engine runs at 2,000 rpm. Approximately 2.2V

Battery voltage

1V or more Voltage rises gradually in response to vehicle speed.

Battery voltage

Approximately 0V

Battery voltage

Approximately 0V

Battery voltage

Approximately 0V

40 Vehicle speed sensor

Throttle (accelerator)

42

42 Ground — —

43 SPORT indicator lamp

44

47

position sensor (Power source)

A/T mode switch “SPORT”

A/T fluid temperature sensor

When moving vehicle at 2 to 3 km/h (1 to 2 MPH) for 1 m (3 ft) or more.

— 4.5 - 5.5V

When setting A/T mode switch in “SPORT” position.

When setting A/T mode switch in other position.

When setting A/T mode switch in “SPORT” position.

When setting A/T mode switch in other position.

When ATF temperature is 20°C (68°F).

When ATF temperature is 80°C (176°F).

Voltage varies between less than 1V and more than 4.5V

Approximately 0V

Battery voltage

Approximately 0V

Approximately 1.5V

Approximately 0.5V

AT-48

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN⋅A/T

Wiring Diagram — AT — VSSA/T

AT-49

YAT262

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN⋅A/T

YAT336

ON BOARD DIAGNOSIS LOGIC

Vehicle Speed Sensor⋅A/T (Revolution sensor)

DESCRIPTION

The revolution sensor detects the revolution of the out put shaft parking pawl lock gear and emits a pulse signal. The pulse signal is sent to the TCM which converts it into vehicle speed.

Diagnostic trouble code Malfunction is detected when ...

: VHCL SPEED SEN⋅A/T

: 1st judgement flicker

TCM does not receive the proper voltage signal from the sensor.

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1) Start engine.

2) Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3) Drive vehicle under the following conditions: Selector lever in “D” position, vehicle speed higher than 30 km/h (19 MPH), throttle opening greater than 1/8 of the full throttle position and driving for more than 5 seconds.

SAT252K

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1) Start engine.

2) Drive vehicle under the following conditions: Selector lever in “D” position, vehicle speed higher than 30 km/h (19 MPH), throttle opening greater than 1/8 of the full throttle position and driving for more than 5 seconds.

3) Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II), AT-15.

Check items

(Possible cause)

! Harness or connectors

(The sensor circuit is open or shorted.)

! Revolution sensor

SAT806H

AT-50

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN⋅A/T

Vehicle Speed Sensor⋅A/T (Revolution sensor) (Cont’d)

DIAGNOSTIC PROCEDURE

NG

CHECK REVOLUTION SENSOR.

Refer to “COMPONENT INSPECTION” below.

OK

Repair or replace revolu-

#

tion sensor.

YAT297

$

CHECK INPUT SIGNAL.

1. Start engine.

2. Select “ECU INPUT SIGNALS” in Data Monitor.

3. Read out the value of “VHCL/S SE⋅A/T” while driving. Check the value changes according to driving speed.

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

1. Start engine.

2. Check voltage between TCM ter-

"

minal

42

and ground while driving.

(Measure in AC range.)

Voltage:

At 0 km/h (0 MPH):

0V

At 30 km/h (19 MPH):

1V or more (Voltage rises gradually in response to vehicle speed.)

OK

$

Perform “SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE”.

OK

$

INSPECTION END

NG

Check the following items:

#

! Harness for short or

open between TCM and revolution sensor (Main harness)

! Harness for short or

open between revolution sensor and ECM (Main harness)

! Ground circuit for ECM

Refer to EC section (“TROUBLE DIAGNOSIS FOR POWER SUPPLY”).

NG

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

NAT218

COMPONENT INSPECTION

Revolution sensor

! For removal, refer to AT-114. ! Check resistance between terminals

Terminal No. Resistance

"

1

2

1

"

2 500 - 650Ω

"

3 No continuity

"

3 No continuity

AT-51

"

1 ,"2 and"3 .

LHD MODELS

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN⋅MTR

Wiring Diagram — AT — VSSMTR

AT-52

YAT263

RHD MODELS

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN⋅MTR

Wiring Diagram — AT — VSSMTR (Cont’d)

AT-53

YAT264

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN⋅MTR

NAT238

ON BOARD DIAGNOSIS LOGIC

Vehicle Speed Sensor⋅MTR

DESCRIPTION

The vehicle speed sensor⋅MTR is built into the speedometer assembly. The sensor functions as an auxiliary device to the revolution sensor when it is malfunctioning. The TCM will then use a signal sent from the vehicle speed sensor⋅MTR.

Diagnostic trouble code Malfunction is detected when ...

: VHCL SPEED SEN⋅MTR

: 2nd judgement flicker

TCM does not receive the proper voltage signal from the sensor.

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1) Start engine.

2) Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3) Drive vehicle under the following conditions: Selector lever in “D” position and vehicle speed higher than 20 km/h (12 MPH).

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1) Start engine.

SAT807H

2) Drive vehicle under the following conditions: Selector lever in “D” position and vehicle speed higher than 20 km/h (12 MPH).

3) Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II), AT-15.

Check items

(Possible cause)

! Harness or connectors

(The sensor circuit is open or shorted.)

! Vehicle speed sensor

AT-54

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN⋅MTR

Vehicle Speed Sensor⋅MTR (Cont’d)

DIAGNOSTIC PROCEDURE

NG

Check the following items:

#

! Vehicle speed sensor

and ground circuit for vehicle speed sensor Refer to EL section (“METERS AND GAUGES”).

! Harness for short or

open between TCM and vehicle speed sensor (Main harness)

NG

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

YAT298

CHECK INPUT SIGNAL.

1. Start engine.

2. Select “ECU INPUT SIGNALS” in Data Monitor.

3. Read out the value of “VHCL/S SE⋅MTR” while driving. Check the value changes according to driving speed.

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

1. Start engine.

2. Check voltage between TCM ter-

"

minal

26

and ground while driving at 2 to 3 km/h (1 to 2 MPH) for 1 m (3 ft) or more.

Voltage:

Voltage varies between less than 1V and more than 4.5V.

OK

$

Perform “SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE”, AT-54.

OK

$

INSPECTION END

AT-55

LHD MODELS

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

Wiring Diagram — AT — TPS

AT-56

YAT265

LHD MODELS

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

Wiring Diagram — AT — TPS (Cont’d)

AT-57

YAT266

RHD MODELS

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

Wiring Diagram — AT — TPS (Cont’d)

AT-58

YAT267

RHD MODELS

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

Wiring Diagram — AT — TPS (Cont’d)

AT-59

YAT268

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

NAT262

ON BOARD DIAGNOSIS LOGIC

Throttle (Accelerator) Position Sensor

DESCRIPTION

The throttle (accelerator) position sensor detects the throttle valve position and sends a signal to the TCM.

Diagnostic trouble code Malfunction is detected when ...

: THROTTLE POSI SEN

: 3rd judgement flicker

TCM receives an excessively low or high voltage from the sensor.

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Remarks: Specification data are reference values.

Monitor item Condition Specification

Throttle (accelerator) position sensor

Fully-closed throttle Approximately 0.5V

Fully-open throttle Approximately 4V

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1) Start engine.

2) Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3) Drive vehicle under the following conditions: Selector lever in “D” position, vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/2 of the full throttle position and driving for more than 3 seconds.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

SAT808H

1) Start engine.

2) Drive vehicle under the following conditions: Selector lever in “D” position, vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/2 of the full throttle position and driving for more than 3 seconds.

3) Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II), AT-15.

Check items

(Possible cause)

! Harness or connectors

(The sensor circuit is open or shorted.)

! Throttle (accelerator) position sensor

AT-60

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

Throttle (Accelerator) Position Sensor (Cont’d)

DIAGNOSTIC PROCEDURE

NG

Check throttle (accelerator)

#

position sensor circuit for engine control. Refer to EC section [“TROUBLE DIAGNOSIS FOR “THRTL (ACCEL) POSI SEN”].

NG

Check harness for short or

#

open between ECM and TCM regarding throttle (accelerator) position sensor circuit. (Main harness)

NG

Repair or replace dam-

#

aged parts.

NG

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

YAT299

Perform diagnostic test mode II (selfdiagnostic results) for engine control. Refer to EC section [“Malfunction Indicator Lamp (MIL)”, “ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION”].

OK

$

CHECK INPUT SIGNAL.

1. Turn ignition switch to “ON” position. (Do not start engine.)

2. Select “ECU INPUT SIGNALS” in Data Monitor.

3. Read out the value of “THRTL POS SEN”.

Voltage:

Fully-closed throttle:

Approximately 0.5V

Fully-open throttle:

Approximately 4V

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

1. Turn ignition switch to “ON” position. (Do not start engine.)

2. Check voltage between TCM ter-

CHECK THROTTLE (ACCELERATOR) POSITION SWITCH. Refer to “CHECK THROTTLE (ACCELERATOR) POSITION SWITCH”, AT-88.

Perform “SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE”, AT-60.

"

minals pedal is depressed slowly.

Voltage:

Fully-closed throttle valve:

Approximately 0.4V

Fully-open throttle valve:

Approximately 4V (Voltage rises gradually in response to throttle position)

INSPECTION END

"

32

and

42

while accelerator

OK

$

OK

$

OK

$

AT-61

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V A

Wiring Diagram — AT — SSV/A

AT-62

YAT280

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V A

Shift Solenoid Valve A

DESCRIPTION

Shift solenoid valves A and B are turned “ON” or “OFF” by the TCM in response to signals sent from the park/neutral position switch, vehicle speed and throttle position sensors. Gears will then be shifted to the optimum position.

SAT341H

Gear position 1234

Shift solenoid valve A ON OFF OFF ON

Shift solenoid valve B ON ON OFF OFF

ON BOARD DIAGNOSIS LOGIC

Diagnostic trouble code Malfunction is detected when ...

: SHIFT SOLENOID/V A

: 4th judgement flicker

TCM detects an improper voltage drop when it tries to operate the solenoid valve.

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1) Start engine.

2) Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3) Drive vehicle in D

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1) Start engine.

2) Drive vehicle in D

3) Perform self-diagnosis.

YAT343

Refer to SELF-DIAGNOSTIC PROCEDURE (Without

CONSULT-II), AT-15.

Check items

(Possible cause)

! Harness or connectors

(The solenoid circuit is open or shorted.)

! Shift solenoid valve A

, D2position.

1

, D2position.

1

AT-63

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V A

Shift Solenoid Valve A (Cont’d)

DIAGNOSTIC PROCEDURE

NG

1. Remove control valve

#

assembly. Refer to AT-113.

2. Check the following items:

! Shift solenoid valve A

Refer to “COMPONENT INSPECTION” below.

! Harness of terminal cord

assembly for short or open

YAT300

CHECK GROUND CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect terminal cord assembly connector in engine compartment.

3. Check resistance between terminal and ground.

Resistance: 20 - 40Ω

OK

"

2

YAT301

$

CHECK POWER SOURCE CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect TCM harness connector.

3. Check resistance between terminal and TCM harness connector terminal

"

11

.

Resistance:

Approximately 0Ω

If OK, check harness for short to ground and short to power.

4. Reinstall any part removed.

OK

$

Perform “SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE”, AT-63.

OK

$

INSPECTION END

"

NG

2

NG

COMPONENT INSPECTION

Shift solenoid valve A

! For removal, refer to AT-139.

Resistance check

! Check resistance between terminal

Repair open circuit or short

#

to ground or short to power in harness or connector.

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

"

2 and ground.

YAT302

YAT303

Solenoid valve Terminal No.

Shift solenoid valve A

"

2 Ground 20 - 40Ω

Resistance

(Approx.)

Operation check

! Check solenoid valve by listening for its operating sound while

applying battery voltage to the terminal

"

2 and ground.

AT-64

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V B

Wiring Diagram — AT — SSV/B

AT-65

YAT281

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V B

Shift Solenoid Valve B

DESCRIPTION

Shift solenoid valves A and B are turned “ON” or “OFF” by the TCM in response to signals sent from the park/neutral position switch, vehicle speed and throttle (accelerator) position sensors. Gears will then be shifted to the optimum position.

SAT341H

Gear position 1234

Shift solenoid valve A ON OFF OFF ON

Shift solenoid valve B ON ON OFF OFF

ON BOARD DIAGNOSIS LOGIC

Diagnostic trouble code Malfunction is detected when ...

: SHIFT SOLENOID/V B

: 5th judgement flicker

TCM detects an improper voltage drop when it tries to operate the solenoid valve.

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1) Start engine.

2) Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3) Drive vehicle in D

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1) Start engine.

2) Drive vehicle in D

3) Perform self-diagnosis.

SAT812H

Refer to SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II), AT-15.

Check items

(Possible cause)

! Harness or connectors

(The solenoid circuit is open or shorted.)

! Shift solenoid valve B

, D2, D3position.

1

, D2, D3position.

1

AT-66

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V B

Shift Solenoid Valve B (Cont’d)

DIAGNOSTIC PROCEDURE

NG

1. Remove control valve

#

assembly. Refer to AT-139.

2. Check the following items:

! Shift solenoid valve B

Refer to “COMPONENT INSPECTION” below.

! Harness of terminal cord

assembly for short or open

YAT304

CHECK GROUND CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect terminal cord assembly connector in engine compartment.

3. Check resistance between terminal and ground.

Resistance: 20 - 40Ω

OK

"

1

YAT305

$

CHECK POWER SOURCE CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect TCM harness connector.

3. Check resistance between terminal and TCM harness connector terminal

"

12

.

Resistance:

Approximately 0Ω

If OK, check harness for short to ground and short to power.

4. Reinstall any part removed.

OK

$

Perform “SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE”, AT-66.

OK

$

INSPECTION END

"

NG

1

NG

COMPONENT INSPECTION

Shift solenoid valve B

! For removal, refer to AT-139.

Resistance check

! Check resistance between terminal

Repair open circuit or short

#

to ground or short to power in harness or connector.

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

"

1 and ground.

YAT306

YAT307

Solenoid valve Terminal No.

Shift solenoid valve B

"

1 Ground 20 - 40Ω

Resistance

(Approx.)

Operation check

! Check solenoid valve by listening for its operating sound while

applying battery voltage to the terminal

"

1 and ground.

AT-67

TROUBLE DIAGNOSIS FOR OVERRUN CLUTCH S/V

Wiring Diagram — AT — OVRCSV

AT-68

YAT282

TROUBLE DIAGNOSIS FOR OVERRUN CLUTCH S/V

SAT341H

ON BOARD DIAGNOSIS LOGIC

Overrun Clutch Solenoid Valve

DESCRIPTION

The overrun clutch solenoid valve is activated by the TCM in response to signals sent from the park/neutral position switch, overdrive control switch, vehicle speed and throttle (accelerator) position sensors. The overrun clutch operation will then be controlled.

Diagnostic trouble code Malfunction is detected when ...

: OVERRUN CLUTCH S/V

: 6th judgement flicker

TCM detects an improper voltage drop when it tries to operate the solenoid valve.

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1) Start engine.

2) Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3) Drive vehicle under the following conditions: Selector lever in “D” position, overdrive control switch in “OFF” position and vehicle speed higher than 10 km/h (6 MPH).

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

YAT351

1) Start engine.

2) Drive vehicle under the following conditions: Selector lever in “D” position, overdrive control switch in “OFF” position and vehicle speed higher than 10 km/h (6 MPH).

3) Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II), AT-15.

Check items

(Possible cause)

! Harness or connectors

(The solenoid circuit is open or shorted.)

! Overrun clutch solenoid valve

AT-69

TROUBLE DIAGNOSIS FOR OVERRUN CLUTCH S/V

Overrun Clutch Solenoid Valve (Cont’d)

DIAGNOSTIC PROCEDURE

NG

1. Remove control valve

#

assembly. Refer to AT-113.

2. Check the following items: ! Overrun clutch solenoid

valve Refer to “COMPONENT INSPECTION” below.

! Harness of terminal cord

assembly for short or open

NG

Repair open circuit or short

#

to ground or short to power in harness or connector.

NG

1. Perform TCM input/output

#

signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

YAT308

CHECK GROUND CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect terminal cord assembly connector in engine compartment.

3. Check resistance between terminal and ground.

Resistance: 20 - 40Ω

OK

$

CHECK POWER SOURCE CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect TCM harness connector.

3. Check resistance between terminal and TCM harness connector terminal

"

20

.

Resistance:

Approximately 0Ω

If OK, check harness for short to ground and short to power.

4. Reinstall any part removed.

OK

$

Perform “SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE”, AT-69.

OK

$

INSPECTION END

"

3

YAT309

YAT310

YAT311

COMPONENT INSPECTION

Overrun clutch solenoid valve

! For removal, refer to AT-113.

Resistance check

! Check resistance between terminal

Solenoid valve Terminal No.

Overrun clutch solenoid valve

"

3 Ground 20 - 40Ω

Operation check

! Check solenoid valve by listening for its operating sound while

applying battery voltage to the terminal

"

3 and ground.

"

3 and ground.

Resistance

(Approx.)

AT-70

TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V

Wiring Diagram — AT — TCV

AT-71

YAT277

TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V

SAT342HA

ON BOARD DIAGNOSIS LOGIC

Torque Converter Clutch Solenoid Valve

DESCRIPTION

The torque converter clutch solenoid valve is activated, with the gear in D speed and throttle (accelerator) position sensors. Torque converter clutch piston operation will then be controlled. Lock-up operation, however, is prohibited when A/T fluid temperature is too low.

, by the TCM in response to signals sent from the vehicle

4

Diagnostic trouble code Malfunction is detected when ...

: T/C CLUTCH SOL/V

: 7th judgement flicker

TCM detects an improper voltage drop when it tries to operate the solenoid valve.

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Remarks: Specification data are reference values.

Monitor item Condition Specification

Torque converter clutch solenoid valve duty

Lock-up “OFF”

"

Lock-up “ON”

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1) Start engine.

2) Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3) Drive vehicle in D position.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1) Start engine.

2) Drive vehicle in D

SAT818H

position.

3) Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II), AT-15.

Check items

(Possible cause)

! Harness or connectors

(The solenoid circuit is open or shorted.)

! T/C clutch solenoid valve

Approximately

4%

"

Approximately

94%

, D2, D3, D4, D4lock-up

1

, D2, D3, D4, D4lock-up

1

AT-72

TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V

Torque Converter Clutch Solenoid Valve (Cont’d)

DIAGNOSTIC PROCEDURE

NG

1. Remove oil pan. Refer

#

2. Check the following

! Torque converter clutch

! Harness of terminal cord

YAT312

CHECK GROUND CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect terminal cord assembly connector in engine compartment.

3. Check resistance between terminal and ground.

Resistance: 10 - 20Ω

OK

"

6

to AT-123.

items:

solenoid valve Refer to “COMPONENT INSPECTION” on next page.

assembly for short or open

YAT313

$

CHECK POWER SOURCE CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect TCM harness connector.

3. Check resistance between terminal and TCM harness connector terminal

"

3 .

Resistance:

Approximately 0Ω

If OK, check harness for short to ground and short to power.

4. Reinstall any part removed.

OK

$

Perform “SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE”, AT-72.

OK

$

INSPECTION END

"

6

NG

Repair open circuit or short

#

to ground or short to power in harness or connector.

NG

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

AT-73

TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V

Torque Converter Clutch Solenoid Valve (Cont’d)

COMPONENT INSPECTION

Torque converter clutch solenoid valve

! For removal, refer to AT-139.

Resistance check

! Check resistance between terminal

"

6 and ground.

YAT314

Solenoid valve Terminal No.

Torque converter clutch solenoid valve

"

6 Ground 10 - 20Ω

Resistance

(Approx.)

Operation check

! Check solenoid valve by listening for its operating sound while

applying battery voltage to the terminal

"

6 and ground.

YAT315

AT-74

TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN

Wiring Diagram — AT — BA/FTS

AT-75

YAT283

TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN

SAT342HA

ON BOARD DIAGNOSIS LOGIC

A/T Fluid Temperature Sensor and TCM Power Source

DESCRIPTION

The A/T fluid temperature sensor detects the A/T fluid temperature and sends a signal to the TCM.

Diagnostic trouble code Malfunction is detected when ...

:

BATT/FLUID TEMP SEN

: 8th judgement flicker

TCM receives an excessively low or high voltage from the sensor.

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Remarks: Specification data are reference values.

Monitor item Condition Specification

Cold [20°C (68°F)]

A/T fluid temperature sensor

Hot [80°C (176°F)]

"

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1) Start engine.

2) Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3) Drive vehicle under the following conditions: Selector lever in “D” position, vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/8 of the full open position, engine speed higher than 450 rpm and driving for more than 10 minutes.

SAT821H

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1) Start engine.

2) Drive vehicle under the following conditions: Selector lever in “D” position, vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/8 of the full open position, engine speed higher than 450 rpm and driving for more than 10 minutes.

3) Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II), AT-15.

Check items

(Possible cause)

! Harness or connectors

(The sensor circuit is open or shorted.)

! A/T fluid temperature sensor

Approximately

1.5V

"

Approximately

0.5V

AT-76

TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN

A/T Fluid Temperature Sensor and TCM Power Source (Cont’d)

DIAGNOSTIC PROCEDURE

NG

Check the following items:

#

! Harness for short or

open between ignition switch and TCM (Main harness)

! Ignition switch and fuse

Refer to EL section (“POWER SUPPLY ROUTING”).

YAT316

CHECK TCM POWER SOURCE.

1. Turn ignition switch to “ON” position. (Do not start engine.)

2. Check voltage between TCM terminals

"

42

,

47

and ground.

Battery voltage should exist.

OK

YAT317

$

CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY.

1. Turn ignition switch to “OFF” position.

2. Disconnect terminal cord assembly connector in engine compartment.

3. Check resistance between terminals

"

and

7 when A/T is cold.

Resistance:

Cold [20°C (68°F)]

Approximately 2.5 kΩ

4. Reinstall any part removed.

OK

$

"

A

(Go to next page.)

"

NG

1. Remove oil pan.

#

2. Check the following items:

! A/T fluid temperature

sensor Refer to “COMPONENT

6

INSPECTION” on next page.

! Harness of terminal cord

assembly for short or open

AT-77

TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN

A/T Fluid Temperature Sensor and TCM Power Source (Cont’d)

"

A

YAT318

$

CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR.

1. Start engine.

2. Select “ECU INPUT SIGNALS” in Data Monitor.

3. Read out the value of “FLUID TEMP SE”.

Voltage: Cold [20°C (68°F)] → Hot [80°C (176°F)]:

Approximately

1.5V → 0.5V

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

1. Start engine.

2. Check voltage between TCM ter-

"

minal

47

and ground while warm-

ing up A/T.

Voltage: Cold [20°C (68°F)] → Hot [80°C (176°F)]:

Approximately

1.5V → 0.5V

OK

$

Perform “SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE”, AT-76.

OK

$

INSPECTION END

NG

Check the following item:

#

! Harness for short or

open between TCM and terminal cord assembly (Main harness)

NG

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

YAT319

COMPONENT INSPECTION

A/T fluid temperature sensor

! For removal, refer to AT-113. ! Check resistance between terminals

temperature as shown at left.

Temperature °C (°F) Resistance

20 (68) Approximately 2.5 kΩ

80 (176) Approximately 0.3 kΩ

AT-78

"

6 and"7 while changing

TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG

Wiring Diagram — AT — ENGSS

AT-79

YAT271

TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG

Engine Speed Signal

DESCRIPTION

The engine speed signal is sent from the ECM to the TCM.

ON BOARD DIAGNOSIS LOGIC

Diagnostic trouble code Malfunction is detected when ...

:

ENGINE SPEED SIG

:

9th judgement flicker

TCM does not receive the proper voltage signal from ECM.

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1) Start engine.

2) Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3) Drive vehicle under the following conditions: Selector lever in “D” position, vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/8 of the full throttle position and driving for more than 10 seconds.

SAT823H

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1) Start engine.

2) Drive vehicle under the following conditions: Selector lever in “D” position, vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/8 of the full throttle position and driving for more than 10 seconds.

3) Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II), AT-15.

Check items

(Possible cause)

! Harness or connectors

(The sensor circuit is open or shorted.)

AT-80

TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG

Engine Speed Signal (Cont’d)

DIAGNOSTIC PROCEDURE

NG

Perform diagnostic test mode II (selfdiagnostic results) for engine control. Check ignition signal circuit condition.

OK

Check ignition signal circuit

#

for engine control. Refer to EC section [TROUBLE DIAGNOSIS FOR “IGN SIGNAL-PRIMARY” (DTC

21)].

YAT320

$

CHECK INPUT SIGNAL.

1. Start engine.

2. Select “ECU INPUT SIGNALS” in Data Monitor.

3. Read out the value of “ENGINE SPEED”. Check engine speed changes according to throttle position.

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

1. Start engine.

2. Check voltage between TCM ter-

"

minal

39

and ground.

Voltage (Idle speed):

Approximately 0.8V

Voltage (2,000 rpm):

Approximately 2.2V

OK

$

Perform “SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE”, AT-80.

OK

$

INSPECTION END

NG

Check the following items:

#

! Harness for short or

open between TCM and ECM

! Resistor Refer to EC section [TROUBLE DIAGNOSIS FOR “IGN SIGNAL-PRIMARY” (DTC 21)].

NG

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

AT-81

LHD MODELS

TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V

Wiring Diagram — AT — LPSV

AT-82

YAT278

RHD MODELS

TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V

Wiring Diagram — AT — LPSV (Cont’d)

AT-83

YAT279

TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V

SAT341H

ON BOARD DIAGNOSIS LOGIC

Line Pressure Solenoid Valve

DESCRIPTION

The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the TCM.

Diagnostic trouble code Malfunction is detected when ...

: LINE PRESSURE S/V

: 10th judgement flicker

TCM detects an improper voltage drop when it tries to operate the solenoid valve.

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Remarks: Specification data are reference values.

Monitor item Condition Specification

Low line-pressure

(Small throttle opening)

Line pressure solenoid valve duty

High line-pressure

(Large throttle opening)

"

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1) Start engine.

2) Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3) With brake pedal depressed, shift the lever from “P” , “N” , “D” , “N” , “P” positions.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1) Start engine.

2) With brake pedal depressed, shift the lever from “P” ,

SAT824H

“N” , “D” , “N” , “P” positions.

3) Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II), AT-15.

Check items

(Possible cause)

! Harness or connectors

(The solenoid circuit is open or shorted.)

! Line pressure solenoid valve

Approximately

29%

"

Approximately

94%

AT-84

TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V

Line Pressure Solenoid Valve (Cont’d)

DIAGNOSTIC PROCEDURE

NG

1. Remove control valve

#

2. Check the following

! Harness of terminal

YAT321

CHECK GROUND CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect terminal cord assembly connector in engine compartment.

3. Check resistance between terminal and ground.

Resistance: 2.5 - 5Ω

OK

"

4

assembly. Refer to AT-113.

items: ! Line pressure solenoid

valve Refer to “COMPONENT INSPECTION” on next page.

cord assembly for short or open

YAT322

$

CHECK POWER SOURCE CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect TCM harness connector.

3. Check resistance between terminal

"

4

and TCM harness connector terminal

"

2 .

Resistance: 11.2 - 12.8Ω

OK

$

CHECK POWER SOURCE CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Check resistance between terminal

"

6

and TCM harness connector terminal

"

1 .

Resistance:

Approximately 0Ω

If OK, check harness for short to ground and short to power.

3. Reinstall any part removed.

OK

$

Perform “SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE”, AT-84.

OK

$

INSPECTION END

NG

Check the following items:

#

! Dropping resistor

Refer to “COMPONENT INSPECTION” on next page.

! Harness for short or

open between TCM ter-

"

minal

2 and terminal

cord assembly (Main harness)

NG

Repair open circuit or short

#

to ground or short to power in harness or connector.

NG

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

AT-85

TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V

Line Pressure Solenoid Valve (Cont’d)

COMPONENT INSPECTION

Line pressure solenoid valve

! For removal, refer to AT-113.

Resistance check

! Check resistance between terminal

"

6 and ground.

YAT323

YAT324

Solenoid valve Terminal No.

Line pressure solenoid valve

"

4 Ground 2.5 - 5Ω

Resistance

(Approx.)

Operation check

! Check solenoid valve by listening for its operating sound while

applying battery voltage to the terminal

"

4 and ground.

Dropping resistor

! Check resistance between terminals

Resistance: 11.2 - 12.8 Ω

"

1 and"2 .

YAT325

AT-86

TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS

Wiring Diagram — AT — PNP/SW

AT-87

YAT269

TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS

Park/neutral Position, Overdrive Control or Throttle (Accelerator) Position Switches

DESCRIPTION

! Park/neutral position switch

Detects the selector lever position and sends a signal to the TCM.

! Overdrive control switch

Detects the overdrive control switch position (ON or OFF) and sends a signal to the TCM.

YAT336

! Throttle (accelerator) position switch

Consists of a wide open throttle position switch and a closed throttle (accelerator) position switch. The wide open throttle position switch sends a signal to the TCM when the throttle valve is open at least 1/2 of the full throttle position. The closed throttle position switch sends a signal to the TCM when the throttle valve is fully closed.

NAT234

NAT261

NAT306

NAT262

AT-88

TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS

Park/neutral Position, Overdrive Control or Throttle (Accelerator) Position Switches (Cont’d)

DIAGNOSTIC PROCEDURE

NG

Check the following items:

#

! Park/neutral position

switch Refer to “COMPONENT INSPECTION”, AT-114.

! Harness for short or

open between ignition switch and park/neutral position switch (Main harness)

! Harness for short or

open between park/ neutral position switch and TCM (Main harness)

! Diode

YAT326

CHECK PARK/NEUTRAL POSITION SWITCH CIRCUIT.

1. Turn ignition switch to “ON” position. (Do not start engine.)

2. Select “ECU INPUT SIGNALS” in Data Monitor.

3. Read out “R, N, D, 2 and 1 position switches” moving selector lever to each position. Check the signal of the selector lever position is indicated properly.

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

1. Turn ignition switch to “ON” position. (Do not start engine.)

2. Check voltage between TCM ter-

"

minals

26

,

27

, ground while moving selector lever through each position.

Voltage:

B: Battery voltage 0: 0V

"

34

,

35

,

36

and

Lever position

P, N B 0000

R0B 000

D00B 00

2000B 0

10000B

(Go to next page.)

Terminal No.

"

36"35"34"27"26

OK

$

"

A

AT-89

TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS

Park/neutral Position, Overdrive Control or Throttle (Accelerator) Position Switches (Cont’d)

"

A

YAT327

$

CHECK OVERDRIVE CONTROL SWITCH CIRCUIT.

1. Turn ignition switch to “ON” position. (Do not start engine.)

2. Select “ECU INPUT SIGNALS” in Data Monitor.

3. Read out “OVERDRIVE SWITCH”. Check the signal of the overdrive control switch is indicated properly. (Overdrive control switch “ON” displayed on CONSULT-II means overdrive “OFF”.)

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

1. Turn ignition switch to “ON” position. (Do not start engine.)

2. Check voltage between TCM ter-

Switch position Voltage

"

minal

22

drive control switch is “ON” and “OFF”.

ON Battery voltage

OFF 1V or less

and ground when over-

OK

$

"

(Go to next page.)

B

NG

Check the following items.

#

! Overdrive control switch

Refer to “COMPONENT INSPECTION”, AT-114.

! Harness for short or

open between TCM and overdrive control switch (Main harness)

! Harness for short or

open of ground circuit for overdrive control switch (Main harness)

AT-90

TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS

Park/neutral Position, Overdrive Control or Throttle (Accelerator) Position Switches (Cont’d)

"

B

YAT328

YAT329

$

CHECK THROTTLE (ACCELERATOR) POSITION SWITCH CIRCUIT.

1. Turn ignition switch to “ON” position. (Do not start engine.)

2. Select “ECU INPUT SIGNALS” in Data Monitor.

3. Read out “CLOSED THL/SW” and “W/O THRL/P-SW” depressing and releasing accelerator pedal. Check the signal of throttle (accelerator) position switch is indicated properly.

Accelerator

pedal condi-

tion

Released ON OFF

Fully

depressed

Data monitor

CLOSED

THL/SW

OFF ON

W/O THRL/

P-SW

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

1. Turn ignition switch to “ON” position. (Do not start engine.)

2. Check voltage between TCM ter-

"

minals

"

16

,

17

and ground while depressing, and releasing accelerator pedal slowly. (after warming up engine)

NG

Check the following items:

#

! Throttle (accelerator)

position switch Refer to “COMPONENT INSPECTION”, AT-114.

! Harness for short or

open between ignition switch and throttle (accelerator) position switch (Main harness)

! Harness for short or

open between throttle (accelerator) position switch and TCM (Main harness)

Terminal

"

No.

16

Battery

voltage

Voltage

Terminal No.

"

17

1V or less

Battery voltage

Accelerator

pedal

condition

Released

Fully

depressed

1V or less

OK

$

Perform “DIAGNOSTIC PROCEDURE”, AT-89.

OK

$

INSPECTION END

AT-91

NG

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS

Park/neutral Position, Overdrive Control or Throttle (Accelerator) Position Switches (Cont’d)

COMPONENT INSPECTION

Overdrive control switch

"

1 and"2 .

"

1 ,("3 ) and"2 .

"

1 —"2

"

2 —"3

NAT265

! Check continuity between terminals

Switch position Continuity

ON No

OFF Yes

A/T mode switch

! Check continuity between terminals

Switch position Terminal No. Continuity

S

*

ON

OFF No

ON

OFF No

Yes

NAT266

SAT517GB

NAT267

Park/neutral position switch

1. Check continuity between terminals

"

terminals

3 and"4 ,"5 ,"6 ,"7 ,"8 ,"9 while moving man-

ual shaft through each position.

Lever position Terminal No.

P

R

N

D

2

1

"

1 —"2

"

3 —"8

"

1 —"2

"

3 —"6

"

3 —"5

"

3 —"4

2. If NG, check again with manual control linkage disconnected from manual shaft of A/T assembly. Refer to step 1.

3. If OK on step 2, adjust manual control linkage. Refer to AT-112.

"

1 and"2 and between

"

3 —"7

"

3 —"9

NAT268

4. If NG on step 2, remove park/neutral position switch from A/T and check continuity of park/neutral position switch terminals. Refer to step 1.

5. If OK on step 4, adjust park/neutral position switch. Refer to AT-114.

6. If NG on step 4, replace park/neutral position switch.

AT-92

TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS

Park/neutral Position, Overdrive Control or Throttle (Accelerator) Position Switches (Cont’d)

Throttle (accelerator) position switch

Closed throttle position switch (idle position)

! Check continuity between terminals

Accelerator pedal condition Continuity

Released Yes

Depressed No

"

5 and"6 .

YAT330

YAT331

! To adjust closed throttle (accelerator) position switch, refer to

EC section (“Basic Inspection”, “TROUBLE DIAGNOSIS — Basic Inspection”).

Wide open throttle position switch

"

! Check continuity between terminals

Accelerator pedal condition Continuity

Released No

Depressed Yes

4 and"5 .

YAT335

A/T fluid temperature switch

1. Make sure the A/T fluid warning lamp lights when the key is inserted and turned to “ON”.

2. Make sure the A/T fluid warning lamp goes off when turning the ignition switch to “ON”.

3. For removal, refer to AT-113.

4. Check resistance between terminal

"

6 and ground while chang-

ing temperature as shown at left.

Temperature °C (°F) Continuity

140 (284) or more Yes

140 (284) or less No

AT-93

DIAGNOSTIC PROCEDURES FOR SYMPTOMS

1. SPORT Indicator Lamp Does Not Come On

SYMPTOM:

POWER indicator lamp does not come on for about 2 seconds when turning ignition switch to “ON”.

YAT332

YAT333

YAT334

CHECK TCM POWER SOURCE.

1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Check voltage between TCM terminals

"

4 ,"9 and ground.

Battery voltage should exist.

OK

$

CHECK TCM GROUND CIRCUIT.

1. Turn ignition switch to “OFF” position.

2. Disconnect TCM harness connector.

3. Check resistance between TCM termi-

"

15

,

"

48

and ground.

nals

Resistance:

Approximately 0Ω

If OK, check harness for short to ground and short to power.

OK

$

CHECK LAMP CIRCUIT.

1. Turn ignition switch to “ON” position.

2. Set overdrive control, A/T check or

power switch to “ON” position.

3. Check voltage between TCM terminal

"

39

and ground.

Voltage: Battery voltage

4. Reinstall any part removed.

OK

$$

Check again.

OK

$

INSPECTION END

NG

Check the following items:

#

! Harness for short or

open between ignition switch and TCM (Main harness)

! Ignition switch and fuse

Refer to EL section (“POWER SUPPLY ROUTING”).

NG

Repair open circuit or short

#

to ground or short to power in harness or connector.

NG

Check the following items:

#

! Fuse (7.5A)

! SPORT indicator lamp

Refer to EL section (“WARNING LAMPS”).

! Harness for short or

open between ignition switch and SPORT indicator lamp (Main harness) Refer to EL section (“POWER SUPPLY ROUTING”).

! Harness for short or

open between SPORT indicator lamp and TCM

NG

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

AT-94

DIAGNOSTIC PROCEDURES FOR SYMPTOMS

2. SPORT or SNOW Indicator Lamp Does Not Come On

SYMPTOM:

SPORT or SNOW indicator lamp does not come on when turning A/T mode switch to the appropriate position.

No

#

NG

#

NAT309

Is 1. O/D OFF, SPORT or A/T CHECK Indicator Lamp Does Not Come On OK?

Yes

$

Check the following items: ! A/T mode switch

Refer to AT-92.

! SNOW indicator lamp ! Harness continuity between ignition

switch and A/T mode switch

! Harness continuity between A/T mode

switch and TCM

Go to 1. SPORT Indicator Lamp Does Not Come On, AT-92.

Repair or replace damaged parts.

NAT232

3. O/D OFF Indicator Lamp Does Not Come On

SYMPTOM:

O/D OFF indicator lamp does not come on when setting overdrive control switch to “OFF” position.

Check the following items:

! Overdrive control switch ! O/D OFF indicator lamp ! Harness continuity between ignition

switch and O/D OFF indicator lamp

NG

Repair or replace dam-

#

aged parts.

AT-95

DIAGNOSTIC PROCEDURES FOR SYMPTOMS

4. SPORT Indicator Lamp Does Not Come On

SYMPTOM:

SPORT indicator lamp does not come on for about 3 seconds when depressing and releasing accelerator pedal fully.

No

#

NAT309

Does self-diagnosis show damage to throttle (accelerator) position sensor circuit?

Yes

Check throttle (accelerator) position sensor. Refer to AT-60.

YAT337

NAT262

$

Check throttle (accelerator) position sensor. — Refer to EC section [TROUBLE DIAGNOSIS FOR “THROTTLE (ACCEL) POSI SEN” (DTC 43)].

OK

$

1. Perform TCM input/output signal

inspection.

2. If NG, recheck TCM pin terminals for

damage or loose connection with harness connector.

NG

Repair or replace throttle

#

(accelerator) position sensor.

AT-96

DIAGNOSTIC PROCEDURES FOR SYMPTOMS

5. Engine Cannot Be Started In “P” and “N” Position

SYMPTOM:

! Engine cannot be started with selector lever in “P” or “N”

position.

! Engine can be started with selector lever in “D”, “2”, “1”

or “R” position.

Yes

#

NG

#

NG

#

SAT146BA

NAT275

Does “ECU INPUT SIGNALS” in Data Monitor show damage to park/ neutral position switch circuit?

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

Does self-diagnosis show damage to park/neutral position switch circuit?

No

$

Check for short or open of park/neutral position switch 2-pin connector. Refer to AT-88.

OK

$

Check starting system. Refer to EL section (“System Description”, “STARTING SYSTEM”).

OK

$

INSPECTION END

Check park/neutral position switch. Refer to AT-88.

Repair or replace park/ neutral position switch.

Repair or replace damaged parts.

SAT133B

6. In “P” Position, Vehicle Moves Forward Or Backward When Pushed

SYMPTOM:

Vehicle moves when it is pushed forward or backward with selector lever in “P” position.

Check parking pawl components. Refer to AT-175.

OK

$

INSPECTION END

NG

Repair or replace dam-

#

aged parts.

AT-97

DIAGNOSTIC PROCEDURES FOR SYMPTOMS

7. In “N” Position, Vehicle Moves

SYMPTOM:

Vehicle moves forward or backward when selecting “N” position.

Does “ECU INPUT SIGNALS” in Data Monitor show damage to park/ neutral position switch circuit?

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

Yes

#

Check park/neutral position switch. Refer to AT-92.

SAT146BA

NAT276

SAT638A

Does self-diagnosis show damage to park/neutral position switch circuit?

No

$

Check control linkage. Refer to AT-115.

OK

$

Check A/T fluid level again.

OK

$

1. Remove oil pan.

2. Check A/T fluid condition.

OK

$$

Check again.

OK

$

INSPECTION END

NG

Adjust control linkage.

#

Refer to AT-115.

NG

Refill ATF.

#

NG

1. Disassemble A/T.

#

2. Check the following items:

! Forward clutch assembly ! Overrun clutch assembly ! Reverse clutch assembly

NG

1. Perform TCM input/

#

output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

SAT171B

AT-98

Nissan Terrano 2002, Terrano 2003, Terrano 2005, Terrano 2006 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual