Infiniti Q45 F50 (2002) Service Manual – Brake Control System

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Page 1

BRAKE CONTROL SYST EM

F BRAKES

SECTION BRC

PRECAUTIONS .......................................................... 3

Precautions for Supplemental Rest raint System (SRS) “AIR BAG” and “SEAT BELT PRE-TEN-

SIONER” .................................................................. 3

Precautions for Brake System .................................. 3

Precautions for Brake Control .................................. 3

Precautions for Trouble Diagnosis ........................... 4

CAN SYSTEM ....................................................... 4

Precautions for Harness Repair ............................... 4

CAN SYSTEM ....................................................... 4

ON-VEHICLE SERVICE ............................................. 5

Adjustment of Neutral Position of Steering Angle

Sensor ...................... ................................................ 5

GENERAL INFORMATION ......................................... 6

Fail-Safe ................................ ................................... 6

ABS SYSTEM ....................................................... 6

VDC/TCS SYSTEM ............ ...... ....... ...... ....... ......... 6

Hydraulic Circuit ....................................................... 6

ABS Functions ......................................................... 6

TCS Functions ......................................................... 7

VDC Functions ......................................................... 7

System Diagram ....................................................... 7

CAN Communication ................................................ 8

SYSTEM DESCRIPTION ...................................... 8

FOR VDC MODELS .............................................. 8

FOR ICC MODELS ............................................... 9

TROUBLE DIAGNOSIS .............................................11

How to Perform Trouble Diagnoses for Quick and

Accurate Repair ......................................................11

INTRODUCTION ............................. ............. ........11

WORK FLOW ...................................................... 12

ASKING COMPLAINTS ...................................... 13

EXAMPLE OF DIAGNOSIS SHEET ................... 13

Component Parts and Harness Connector Location ... 14

Schematic .............................................................. 15

Wiring Diagram -VDC- ........................................... 16

Control Unit Input/Output Signal Standard ............. 24

ST ANDARDS USING A CIRCUIT TESTER AND

OSCILLOSCOPE ............... ................................. 24

STANDARDS WITH CONSULT-II ....................... 27

BRAKE CONTROL SYSTEM

CONTENTS

Functions of CONSULT-II ....................................... 30

CONSULT-II MAIN FUNCTION ........................... 30

DATA MONITOR .................................................30

SELF-DIAGNOSIS .............................................. 33

ACTIVE TEST ..................................................... 36

Refer to “For Correct and Quick Diagnosi s”. ..........39

PRECAUTIONS FOR TROUBLE DIAGNOSIS ...39

Basic Inspection .....................................................40

PRELIMINARY CHECK 1: (BRAKE FLUID

LEVEL AND LEAK INSPECTION) ......................40

PRELIMINARY 2: (INSPECTION FOR LOOSE

POWER SUPPLY TERMINAL) ............................40

PRELIMINARY 3: (INSPECTION FOR ABS WARNING LAMP , VDC OFF INDICA TOR LAMP ,

AND SLIP INDICATOR LAMP) ............................ 40

Self-Diagnoses .......................................................41

FUNCTION .................................. ........................41

PROCEDURE .....................................................41

HOW TO READ SELF-DIAGNOSIS RESULTS

(MALFUNCTION) ................................................ 41

HOW TO ERASE SELF-DIA GNOSIS RESUL TS

(MALFUNCTION) ................................................ 42

INDICATION ITEM .............................................. 42

Inspection 1 CAN Communication Line or VDC/ TCS/ABS Control Unit and Steering Angle Sensor

System ......................... ...... ....... ...... ....... ...... ....... ....45

Inspection 2 Engine System ................................... 46

Inspection 3 VDC/TCS/ABS Control Unit System ...46 Inspection 4 Pressure Sensor and the Circuit between Pressure Sensor and VDC/TCS/ABS Con-

trol Unit ...................................................................47

Inspection 5 Steering Wheel Angle Sensor and the Path between Steering Wheel Angle Sensor and

VDC/TCS/ABS Control Unit ....................................49

Inspection 6 Yaw Rate Sensor/Side G-sensor and Path between Y aw Rate Sensor/Side G-sensor and

VDC/TCS/ABS Control Unit. ...................................50

Inspection 7 Precharging Pump Motor and Circuit ...52 Inspection 8 Solenoid, VDC Switching Valve and

Circuit .....................................................................54

BRC

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BRC-1

Page 2

Inspection 9 Actuator Motor, Motor Relay , and Cir-

cuit ..........................................................................57

Inspection 10 Actuator Relay and Route ................59

Inspection 11 Stop Lamp Switch and Path .............61

Inspection 12 VDC/TCS/ABS Control Unit Power

Supply Circuit .........................................................62

Inspection 13 If “Shift Position Error” is Indicated

in the Self-Diagnosis Item Display ..........................64

Inspection 14 When “Emergency Brake” is Dis-

played in the Self-Diagnosis Item Display ..............64

Inspection 15 When “Steering Wheel Angle Sensor has not been Corrected” is Indicated in the Self-

Diagnosis Display ...................................................65

Inspection 16 Communication Circuit between Brake Fluid Level of Reservoir Tank, VDC/TCS/ABS

Control Unit and Brake Fluid Level Switch .............65

Component Check ..................................................66

VDC OFF SWITCH .............................................66

VDC RELAY BOX ................................................66

VDC ACTUATOR .................................................67

Symptom 1: ABS Works Frequently. ......................69

Symptom 2: Unexpected Pedal Action ...................69

Symptom 3: Longer Stopping Distance ..................70

Symptom 4: ABS Does Not Work. ..........................71

Symptom 5: Pedal Vibration and Noise ..................71

Symptom 6: VDC OFF Indicator Lamp Does Not Illu-

minate ............................. ........................................72

Symptom 7: SLIP Indicator Lamp Does Not Illumi-

nate .............................. ...........................................73

Symptom 8: During VDC/TCS/ABS Control, Vehicle

Behavior is Jerky. ....................................................73

WHEEL SENSORS ...................................................75

Removal and Installation .........................................75

REMOVAL ........................................................ ....75

INSTALLATION ................................................ ....75

VDC/TCS/ABS CONTROL UNIT ..............................76

Removal and Installation .........................................76

SENSOR ROTOR ......................................................77

Removal and Installation .........................................77

REMOVAL ........................................................ ....77

INSTALLATION ................................................ ....77

VDC/TCS/ABS ACTUATOR ......................................78

Removal and Installation .........................................78

PRECHARGE PUMP ASSEMBLY ............................79

Removal and Installation .........................................79

REMOVAL ........................................................ ....79

INSTALLATION ................................................ ....79

G SENSOR ........................................ ....... ...... ...........80

Removal and Installation .........................................80

REMOVAL ........................................................ ....80

INSTALLATION ................................................ ....80

VDC/TCS/ABS RELAY BOX .....................................81

Removal and Installation .........................................81

Revision: 2004 April 2002 Q45

BRC-2

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PRECAUTIONS

PRECAUTIONS PFP:00001

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

EFS000NX

The Supplemental Rest raint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used al ong with a front seat belt, helps to redu ce th e risk or se verit y of i njury to the driv er and front passenge r for ce rtain types of col lision. Information necessary to service the system safely is includ ed in the SRS a nd SB section of this Service Manual.

WARNING:

● To avoid rendering the SRS inopera tive, whi ch could incr ease the risk of pe rsonal 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/INFINITI dealer.

● Improper maintenance, inc luding incorrect removal and installation of the SRS, can lead to per-

sonal injury ca use d by unintentional ac tiv atio n o f the s ys tem . F or re moval of Spiral C ab le and Air Bag Module, see the SRS sec tion.

● Do not use electrical test equ ipment o n any circu it related to the SRS unless in structed to in this

Service Manual. SRS wiring harnesses can be id entified by yellow and/or orange harnesses or harness connectors.

Precautions for Brake System EFS000GV

● Use brake fluid “DOT 3”.

● Never reuse drained brake fluid.

● Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed

on painted areas, wash it away with water immediately.

● Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of hydraulic syst em.

● Use flare nut wr ench when removing and installing brake tubes.

● Always torque brake lines when install ing.

● Before working, turn the ignition switch OFF and disconnect the

connectors for the ABS actuator and c ontrol module or the battery terminals.

● Burnish the brake co ntact surfaces after refi nishing or rep lacing

drums or rotors, af ter rep lacin g pads or lini ngs, or if a soft p edal occurs at very low mileage. Refe r to BR-25, "

Brake Burnishing

Procedure" .

WARNING:

Clean brakes with a va cuum dust col lector to minim ize risk of health hazard from powder caused by friction.

BRC

SBR686C

Precautions for Brake Control EFS000GW

● During ABS operat ion, the brake pe dal vibrates li ghtly and its mechan ical noise ma y be heard. This is a

normal condition.

● Just after starting the vehicle after ignition switch ON, the brake pedal may vibrate or the motor operating

noise may be heard from the engine compartment. This is a normal status of the operation check.

● The stopping distance may be longer than that of vehicles without ABS when the vehicle drives on rough,

gravel, or snowy ( fresh deep snow) r oad.

● If a malfunction is indicated by the ABS warning lamp, or other warning lamps, collect the necessary infor-

mation from the customer (what symptoms are present under what conditions) and find out the possible causes before starting the service. Besides the electrical system inspection, check the booster operation, brake fluid level, and oil leaks.

● If the tire si ze and typ e are used in a imp roper combin ation, or the brake pads are no t NISSAN genu ine

parts, the stopping distance or steering stability may deteriorate.

● If there is a radio, ante nna, or an tenna le ad-in wire (in cluding w iring) ne ar the control unit, the ABS func-

tion may have a malfunction or er ror.

● If aftermarket parts (e.g. Car stereo equipment, CD player) have been installed, check the electrical har-

nesses for pinches, open, and impr oper wiring.

Revision: 2004 April 2002 Q45

BRC-3

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PRECAUTIONS

Precautions for Trouble Diagnosis EFS001OW

CAN SYSTEM

● Do not apply voltage of 7.0V or higher to the measurement terminals.

● Use the tester with its open terminal voltage being 7.0V or less.

Precautions for Harness Repair EFS001OX

CAN SYSTEM

● Solder the repaired parts, and wrap with tape. [Frays of twisted

line must be within 110 mm (4.33 in)]

PKIA0306E

● Do not perform bypass wire connections for the repair parts.

(The spliced wire w ill beco me separat ed and t he chara cterist ics of twisted line will be lost.)

PKIA0307E

Revision: 2004 April 2002 Q45

BRC-4

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ON-VEHICLE SERVICE

ON-VEHICLE SERVICE PFP:00000

Adjustment of Neutral Position of Steering Angle Sensor EFS000GY

● After removing/installing or replacing the VDC/TCS/ABS control unit, steering angle sensor, steering com-

ponents, suspension components, and tires, or after adjusting the wheel alignment, make sure to adjust the neutral position of the steering angle sensor before running the vehicle.

CAUTION:

To adjust the neutral position of the steering angle sensor, make sure to use CONSULT-II. (Adjustment cannot be done other than CONSULT -II.)

1. Stop the vehicle with the front wheels in the straight-ahead position.

2. Connect CONSULT-II to data link connector on the vehicle, and turn the ignition switch to ON position (engine not running).

3. Touch “VDC”, “WORK SUPPORT” and “ANGLE SENSOR ADJUSTMNET” on the CONSULT-II screen in this order.

PBIB0196E

BRC

4. Touch “START”.

CAUTION:

Do not touch the steering wheel while adj usting the steering angle sensor.

5. After approximately 10 seconds, touch “END”. (After approximately 60 seconds, it ends auto matically.)

6. Turn the ignition switch OFF, then turn it ON again.

CAUTION:

Make sure to carry out the above operation.

7. Run the vehicle w ith the front wh eels in the s traig ht-ahe ad po sition, then stop.

8. Select “DA TA MONITOR”, “CONTROL MODULE INPUT ITEM”, and “STEERING ANGLE SIGNAL” on the

CONSULT-II screen. Then check that the “STEERING ANGLE SIGNAL” is within 0±2.5deg. If the value is more than the sp ecification, repeat steps 1 to 5.

9. Erase the memory of VDC/TCS/ABS control module and ECM.

10. Turn the ignition switch OFF.

SFIA0168E

Revision: 2004 April 2002 Q45

BRC-5

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GENERAL INFORMATION

GENERAL INFORMATION PFP:00000 Fail-Safe EFS000GZ

ABS SYSTEM

If a malfunction occurs in the electrical sys tem, the ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp in th e me te r wil l turn ON. In th is c ondit io n, th e VDC/TCS/ABS and EBD bec ome on e of the following conditions by the fail-safe function.

1. Only EBD operates. The same condition as that of models without VDC/TCS/ABS

2. VDC/TCS/ABS and EBD do not operate. Only normal brake operates on 4 wheels.

NOTE:

In the step 1 shown ab ove, the self-diagn osis is carri ed out at t he ignitio n switch is turned ON and whe n the vehicle initial starts. ABS self-diagnosis noise may be heard as usual.

VDC/TCS SYSTEM

If a malfunctio n occurs in the electrical system, the VDC OFF indi cator lamp an d SLIP indic ator lamp in t he meter turn on. In this c ondition, VDC/TCS wil l be de activated and it becomes equal to that of models without VDC/TCS. However, ABS is controlled normally. If a malfunction o ccurs in the throttle cont rol system, VDC/TCS c ontrol does not operate. Only ABS control operates normally.

CAUTION:

If the fail-safe function operates, carry out the self-diagnosis for VDC/TCS/ABS control system.

Hydraulic Circuit EFS000H0

CAUTION:

● When installing, check for twist and fracture.

● Make sure that th ere is no interferen ce with other parts when turning the steering clockwise o r

counter clockwise.

● The brake piping is an important safety part. If a brake fl uid leak is detected , alwa ys disasse mble

and replace with a new one, if ne cessary.

SFIA0169E

ABS Functions EFS000H1

1. During ABS operation, the brake pedal ligh tly vibrates an d its mechanical no ise may be heard . This is a normal condition .

2. When starting the engine, or just af ter s tarting the v eh ic le, the bra k e ped al may vi bra te or th e mo tor operating noise may be heard from the engine compartment. This is a normal status of the operation check.

3. The stopping distance may be longer than that of vehicles without ABS when the vehicle drives on rough, gravel, or s nowy (fresh deep snow) road.

4. EBD is integrated in VDC/TCS/ABS system.

Revision: 2004 April 2002 Q45

BRC-6

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GENERAL INFORMATION

TCS Functions EFS000H2

1. With the wheel speed sensor signal from 4 wheels, the VDC/TCS/ABS control module detects a wheel spin on the driv e w hee ls . I f a wh ee l s pins , t h e co ntr o l mod ul e co nt ro ls bra ke f l ui d pr es su re on r ear LH a nd RH, and cuts the fuel to the engine. It also closes the throttle valve to reduce the engine torque. Furthermore, throttle position is controlled to the appropriate engine torque.

2. Depending on road circumstances, the driver may have a sluggish feel. This is not abnormal, because the optimum traction has the highest priority by TCS operation.

3. When the vehicle is passing through a road where the surface friction coefficient varies, downshifting or depressing th e accelerator pedal fully may activate TCS temp orarily.

4. During TCS operation, it informs a driver of system oper ation by flashing SLIP indi cator lamp.

VDC Functions EFS000H3

1. In addition to the ABS/TC S func tion, VDC dete cts the driv er's ste ering operati on am ount and bra ke op eration amount from the steering angle sensor and pressure sensor. Using the information from the yaw rate/transverse G-sensor and wheel speed sensor, VDC judges the driving condition (conditions of under steer and over steer) to improve the stability by controlling the brake on 4 wheels and engine output.

2. During VDC operation, the SLIP indicator lamp flas hes to inform the driver of th e operation.

3. During VDC operatio n, the body and the brake peda l lightly vibrate and the ir mechanical noise may be heard. This is a normal condition.

4. If the vehicle is rotated on a tu rn table, o r roll ed a nd rock ed on a sh ip, th e ABS warning lam p, VDC O FF indicator lamp, and SLIP indicator lamp may tur n ON. In this case, start the engine o n a normal road again. If the ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp turn OFF after the restart, it is normal.

5. When driving in a steep slope such as a bank, the ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp may turn ON. In this case, start the engine on a normal road again. If the ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp turn off after the restart, it is normal.

System Diagram EFS000H4

BRC

SFIA0166E

Revision: 2004 April 2002 Q45

BRC-7

Page 8

GENERAL INFORMATION

CAN Communication EFS000NY

SYSTEM DESCRIPTION

CAN (Controller Area N et w ork ) is a s eri al co mm u nic a tio n l ine for real time appl ic ati on . It is an on-vehicl e m ul tiplex communi catio n lin e wit h high da t a comm unic ation speed and ex cellen t er ror det ecti on ab ilit y. Many electronic control u nits are eq uipped o nto a ve hicle, a nd eac h control unit sh ares info rmation and link s with ot her control units duri ng operation (not independent). In CAN communicatio n, control units ar e connected wi th 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

FOR VDC MODELS System diagram

PKIB0302E

Input/output signal chart

T: Transmit R: Receive

Signals TCM

Engine speed signal R R R T Engine coolant temperature signal R R T Accelerator pedal position signal R R T Engine torque signal R R T Battery voltage signal R T

Closed throttle position signal R T Wide open throttle position signal R T Lock-up prohibition signal R T Torque-down permission signal R T Fuel consumption monitor signal R T Lock-up signal T R Hard deceleration signal T R Torque-down signal T R Power mode indicator signal T R A/T fluid temperature warning lamp signal T R R

Current gear position signal

Next gear position signal T R R Shift change signal T R R Shift pattern signal T R VDC system control signal TR VDC operation signal TR Stop lamp switch signal R T Steering wheel angle sensor signal R T R R

TR RR RT

Combination

meter

Steering wheel

angle sensor

VDC / TCS /

ABS control

unit

ECM

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BRC-8

Page 9

GENERAL INFORMATION

Signals TCM

Air conditioner switch signal T R Headlamp switch signal T R Rear window defogger switch signal T R OD cancel switch signal R T R Brake switch signal R T Power mode switch signal R T

RR T

Vehicle speed signal

RT R TR

Combination

meter

Steering wheel

angle sensor

VDC / TCS /

ABS control

unit

FOR ICC MODELS System diagram

ECM

BRC

Input/output signal chart

T: Transmit R: Receive

Steering

Signals TCM

ICC system display signal R T ICC sensor signal R T Engine speed signal R R R R T Engine coolant temperature signal R R T Accelerator pedal position signal R R T Engine torque signal R R T Battery voltage signal R T Closed throttle position signal R R T Lock-up prohibition signal R T Torque-down permission signal R T Fuel consumption monitor signal R T Lock-up signal T R Hard deceleration signal T R Torque-down signal T R

Combination meter

wheel

angle

sensor

ICC unit

ICC

sensor

VDC / TCS /

ABS con-

trol unit

PKIB0303E

ECM

Revision: 2004 April 2002 Q45

BRC-9

Page 10

GENERAL INFORMATION

Steering

Signals TCM

Power mode indicator signal T R A/T fluid temperature warning lamp sig-

nal

Current gear position signal

Next gear position signal T R R Shift change signal T R R Shift pattern signal T R R VDC system control signal TR VDC operation signal R T R Stop lamp switch signal R T Steering wheel angle sensor signal R T R R Air conditioner switch signal T R Headlamp switch signal T R Rear window defogger switch signal T R OD cancel switch signal R T R Brake switch signal R T Power mode switch signal R T

Vehicle speed signal

TR R

TR RR RT

RR R T RT R TRR

Combination meter

wheel

angle

sensor

ICC unit

ICC

sensor

VDC / TCS /

ABS con-

trol unit

ECM

Revision: 2004 April 2002 Q45

BRC-10

Page 11

TROUBLE DIAGNOSIS

TROUBLE DIAGNOSIS PFP:00004

How to Perform Trouble Diagnoses for Quick and Accurate Repair EFS000H5

INTRODUCTION

● The most important point to perform the trouble diagnosis is to understand the systems (control and

mechanism) in the vehicle thoroughly.

● It is also important to clarify the customer complaints before

inspection. First of all, reproduce the symptom, and understand it fully. Ask the customer about his/her complaints carefully. In some cases, it will be necessary to check the symptoms by driving the vehicle with the customer.

CAUTION:

Customers are not professional. It is dangerous to make an easy guess like “maybe the customer means that...,”or“maybe the customer mentions this symptom”.

● It is essential to check symptoms right from the beginning in

order to repair a malfunction completely. For an intermittent malfunction, it is important to reproduce the symptom based on an interview with the customer and past examples. Do not perform an inspection on an ad hoc basis. Most intermittent malfunctions are caused by poor contacts. In this case, it will be effective to shake the suspected harness or connector by hand. When repairs are performed without any trouble diagnosis. Repair work is not confirmed if it's done correctly.

● After the diagnosis, make sure to carry out “erase memory”.

Refer to BRC-33, "

● For an intermittent malfunction, move the harness or harness connector by hand to check the poor con-

tact or false open circuit.

● Always read t he “GI S ec tio n, Ge ne ral I nfor m ati on” to ch ec k t h e g en era l gu idel in es a nd to c onfi r m th e g en -

eral precautions.

SELF-DIAGNOSIS" .

SEF234G

BRC

SEF233G

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BRC-11

Page 12

WORK FLOW

TROUBLE DIAGNOSIS

PFIA0019E

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BRC-12

Page 13

TROUBLE DIAGNOSIS

ASKING COMPLAINTS

● Complaints against a malfunction vary depending on each per-

son. It is important to clarify the customer complaints.

● Ask the customer about what symptoms are present under what

conditions. Use th e inform atio n to repro duc e the sy mptom w hile driving.

● It is also important to use the diagnosis sheet to understand

what type of trouble the customer having.

EXAMPLE OF DIAGNOSIS SHEET

SBR339B

BRC

SFIA0791E

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BRC-13

Page 14

TROUBLE DIAGNOSIS

Component Parts and Harness Connector Loca tion EFS000H6

SFIA0559E

Revision: 2004 April 2002 Q45

BRC-14

Page 15

TROUBLE DIAGNOSIS

Schematic EFS000H7

BRC

TFWM0021E

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BRC-15

Page 16

TROUBLE DIAGNOSIS

Wiring Diagra m - V DC - EFS001OY

TFWM0002E

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BRC-16

Page 17

TROUBLE DIAGNOSIS

BRC

TFWM0003E

Revision: 2004 April 2002 Q45

BRC-17

Page 18

TROUBLE DIAGNOSIS

TFWM0022E

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BRC-18

Page 19

TROUBLE DIAGNOSIS

BRC

TFWM0005E

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BRC-19

Page 20

TROUBLE DIAGNOSIS

TFWM0006E

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BRC-20

Page 21

TROUBLE DIAGNOSIS

BRC

TFWM0007E

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BRC-21

Page 22

TROUBLE DIAGNOSIS

TFWM0008E

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BRC-22

Page 23

TROUBLE DIAGNOSIS

BRC

TFWM0009E

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BRC-23

Page 24

TROUBLE DIAGNOSIS

Control Unit Input/Output Si gn al Standard EFS000H8

STANDARDS USING A CIRCUIT TESTER AND OSCILLOSCOPE

CAUTION:

Connect the connectors for the VDC/TCS/ABS c ontrol unit and actuator, and turn the ignition switch ON.

PFIA0020E

Measurement

terminal

+1 51 Power supply Always Battery voltage (approx. 12V)

7 Actuator mo to r relay

36 Actuator relay

20 Actuator motor monitor

Body groun d

Measuring point Standard value (Note 1)

Power supply Ignition switch ON Battery voltage (approx. 12V)

Actuator motor relay, actuator relay power supply and steering angle sensor power supply

Ignition switch ON Battery voltage (approx. 12V)

Actuator motor being driven (“Active test” mode with CONSULT-II)

Actuator motor while the vehicle is stopped

When actuator relay is active. (the engine running)

When actuator relay is inactive. (Fail-safe, engine starts.)

When actuator relay is active. (the engine running)

When actuator relay is inactive. (Fail-safe, engine starts.)

Approx. 0V

Battery voltage (approx. 12V)

Approx. 0V

Battery voltage (approx. 12V)

Approx. 0V

(Reference)

Check items for

malfunction

Control unit power supply circuit

Actuator motor, motor relay, and circuit

Actuator relay and circuit

Actuator motor monitor circuit

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BRC-24

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TROUBLE DIAGNOSIS

Measurement

terminal

8 10 FR LH SENSOR [OPEN] 11 12 RR RH SENSOR 13 14 RR LH SENSOR

15 16 FR RH SENSOR

Body groun d

Body groundStop lamp signal

Measuring point Standard value (Note 1)

Front LH wheel OUT solenoid

Rear RH wheel OUT solenoid

Front LH wheel IN solenoid

Rear RH wheel IN solenoid

Rear LH wheel OUT solenoid

Front RH wheel IN Solenoid

Rear LH wheel IN solenoid

Rear RH wheel OUT solenoid

Primary-side VDC switch-ov er valve 1

Secondary-side VDC switch-ov er valve 1

Secondary-side VDC switch-ov er valve 2

Primary-side VDC switch-ov er valve 2

VDC OFF switch

Solenoid valve activated (In active test mode of CONSULT-II) or actuator relay inactive (in fail-safe mode)

When solenoid valve is inactive and actuator relay active (when ignition switch ON)

When switch-over valv e is active (in CONSULT-II actuator mode) Or, when actuator relay inactive (when fail-safe) When switch-over valv e is inactive and actuator relay is active (when ignition switch

ON)

Wheel rotate d (a pprox. 30 km / h (19 MPH) (Note 2)

Depress brake pedal. Battery voltage (approx. 12V) Release the brake pedal. Approx. 0V VDC OFF switch is pressed. Approx. 10V

VDC OFF switch is released. Approx. 12V

Approx. 0V

Battery voltage (approx. 12V)

Approx. 0V

Battery voltage (approx. 12V)

Pulse generation : Approx. 200 Hz : 200Hz

(Reference)

Check items for

malfunction

Solenoid and circuit

Switch-over valve and circuit

Speed sensor and circuit

Stop lamp switch and circuit

VDC OFF switc h and circuit

BRC

Body groun d

CAN communication input/output signal (H)

CAN communication input/output signal (L)

Revision: 2004 April 2002 Q45

Ignition switch ON

BRC-25

PBIA0224J

PBIA0223J

–

Page 26

TROUBLE DIAGNOSIS

Measurement

terminal

24 Precharge pump (–)

67 68

69 Ignition switch ON Approx. 0V

18 Side G-sensor Ignition swit ch ON Approx. 2.5V 34

77 Ignition switch ON

Measuring point Standard value (Note 1)

When precharge pump is

Pre charge pump (+)

Pressure sensor

Yaw rate /side G-sensor

active (in CONSULT-II active mode)

When precharge pump is active and vehicle is stopped

Ignition switch ON Approx. 0V When ignition switch ON and

brake pedal released.

Ignition switch ON Battery voltage (approx. 12V)

Battery voltage (approx. 12V)

Approx. 0V

Approx. 0.6V

(Reference)

Check items for

malfunction

Precharge pump and circuitPrecharge pump not activated Approx. 0V

Pressure sensor and circuit

Yaw rate /Side Gsensor and circuit

78 Ignition switch ON Approx. 2.5V

Body groun d

Yaw rate sensor

Ignition switch ON

80 Ignition switch ON Approx. 0V

ABS warning lamp turns on

30 ABS warning lamp

31 VDC OFF LED

83 SLIP LED

84 ASCD output signal

Brake fluid level warning

lamp

(Note 3) ABS warning lamp turns off

(note 3) VDC OFF indicator lamp

turns on (Note 4) VDC OFF indicator lamp

turns off (note 4) When SLIP indicator lamp is

ON (Note 5) SLIP indicator lamp turns off

(note 5) ASCD output signal ON (in

CONSULT-II activ e mode test)

Ignition switch ON Approx. 11 V

Brake fluid is not enough Battery voltage (approx. 12V) Brake fluid level

Brake fluid is enough Approx. 0V

SFIA0150E

SFIA0151E

Approx. 0V

Battery voltage (approx. 12V)

Approx. 0V

Battery voltage (approx. 12V)

Approx. 0V

Battery voltage (approx. 12V)

Approx. 1 V or less

Yaw rate sensor and path

ABS warning lamp and circuit

VDC OFF warning lamp and circuit

SLIP indicator lamp and circuit

Between VDC/ TCS/ABS control unit and ASCD

control unit cir-

cuit

warning lamp switch and circuit

Revision: 2004 April 2002 Q45

BRC-26

Page 27

TROUBLE DIAGNOSIS

Measurement

terminal

Body

(Note 1): When the parking brake is che cked using a circ uit tester for voltage m easu rement, th e connec tor term inals s hould no t extend forcefully. (Note 2): Check the pressure of the tire in normal condi t ion. (Note 3): ON/OFF timing of the ABS warning lamp ON: When the ignition switch is turned ON (be fore engi ne start) or a malfun ct ion is detected. OFF: 2 seconds after the engine started (the system is in normal condition). (Note 4): VDC OFF indicator lamp ON/OFF timing ON: When the ignition switch is turned ON (befor e engine start) or a malfunction is detected, if the TCS OFF switch is ON. OFF: 2 seconds after the engine started (the system is in normal con di tion) and TCS OFF switch is OFF. (Note 5): ON/OFF timing of the SLIP indicator lamp ON: When the ignition swi tch is turned O N (before engine start) or a mal function is detect ed, if the VDC/TCS function is act ive during driving. OFF: 2 seconds after the engine started (the system is in normal con di tion) and the VD C /TCS funct i on is inactive. Flashing: VDC/TCS function is active during driving.

groun d

Measuring point Standard value (Note 1)

Parking brake signal

Apply the parking brake. Battery voltage (approx. 12V) Release the parking brake. Approx. 0V

(Reference)

Check items for

malfunction

Parking brake switch an d circuit

STANDARDS WITH CONSULT-II

CAUTION:

The displayed item is the data calculated by the control unit, so it may indicate a normal value even if an output circuit (harness) is open or shorted.

Monitor item Contents

N-position signal

Conditions of N, R, P-

R-position signal

P-position signal

Gear A/T gear position

Wheel speed Wheel speed (Note 1)

Guide objective

Throttle guide

position signals

Open/close condition of motor throttle

Open/close condition of throttle valve (linked with accelerator pedal)

Data monitor

Condition

N - position ON Any position other than N OFF When R - position ON Not R - position OFF When P - position ON Not P - position OFF 1: 1st gear

2: 2nd gear 3: 3rd gear 4: 4th gear 5: 5th gear

Vehicle stopped 0 [km/h (MPH)]

During driving

VDC/TCS not activated 100% Control unit communica-

VDC/TCS activated 0 – 100%

Accelerator pedal not depressed (ignition switch is ON)

Accelerator pedal depressed (ignition switch is ON)

Reference value in

normal operation

Almost in accordance with the speedometer display (wit hin ±10%)

0 – 100%

(Reference) Check items

for malfunction

A/T control un it and circuit VDC/TCS/ABS control unit and circuit

–

Wheel sen sor circuit

tion circuit between the VDC/TCS/ABS control unit and ECM

Control unit communication circuit between the VDC/TCS/ABS control unit and ECM

BRC

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BRC-27

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TROUBLE DIAGNOSIS

Monitor item Contents

Engine speed

ASCD output

Buzzer output

STEERING ANGLE SIGNAL

Yaw rate sensor

Side G-sensor

Pressure sensor

ABS c ont ro l unit voltage

STOP LAMP SW

With the engine running

ASCD operation condition

Buzzer operation condition

Steering angle detected by steering angle sensor

Yaw rate detected by yaw rate s e n s or

Transverse acceleration detected by side G-sensor

Brake fluid pressure detected by pressure sensor

Battery voltage supplied to the VDC/TCS/ ABS cont ro l unit

Operating status of brake pedal

Parking brake switch Parking brake status

OFF SW

ABS WARNING LAMP

When removing dirt or sealant from the OFF indicator lamp, never use an organic solvent (such as paint thinner or gasoline).

When removing dirt or sealant from the CONTROL lamp, never use an organic solvent (such as paint thinner or gasoline).

OFF S W ON/OFF condition

ABS warning lamp status (Note 2)

VDC OFF indicator lamp status (Note 3)

SLIP indicator lamp status (Note 4)

Data monitor

Condition

With the engine stopped 0rpm

Engine running

ASCD activated ON ASCD not activated OFF Buzzer activated ON Buzzer not activated OFF Straight-ahead condition Approx. 0 deg

Steering – 720 to 720deg Vehicle stopped Approx. 0 d/s

During driving – 70 to 70d/s Vehicle stopped

During driving With the ignition switch

turned ON and brake pedal released.

With the ignition switch turned ON and brake pedal depressed.

Ignition switch ON 10 - 16V

Depress brake pedal. ON Release the brake pedal. OFF Parking brake activated ON Parking brake not activated OFF VDC OFF switch ON

(When DC OFF indicator lamp is ON.)

VDC OFF switch OFF (When VDC OFF indicator lamp is OFF.)

When ABS warning lamp is ON.

When ABS warning lamp is OFF.

When VDC O FF i ndicat or lamp is ON.

When VDC O FF i ndicat or lamp is OFF.

When SLIP indicator lamp is ON

When SLIP indicator lamp is OFF

Reference value in

normal operation

Almost in accordance with tachometer display

Approx. 0 m/s – 24.3 to 24.1m/s

Approx. 0 bar

– 40 to 300bar

OFF

(Reference) Check items

for malfunction

Engine speed signal path

ASCD and circuit

Buzzer and circuit

Steering angle sensor and circuit

Yaw rate sensor and circuit

Side G-sensor and route

Pressure sensor and circuit

VDC/TCS/ABS control unit power supply circuit and ground circuit

Stop lamp switch circuit

Parking brake switch circuit

VDC OFF switch circuit

ABS warning lamp circuit

VDC OFF indicator lamp circuit

SLIP indicator lamp circuit

Revision: 2004 April 2002 Q45

BRC-28

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TROUBLE DIAGNOSIS

Data monitor

Monitor item Contents

Actuator (solenoid) is active (“Active Test” with CONSULT-

EV SIGNAL AV SIGNAL

USV SIGNAL MAV SIGNAL

V/R SIGNAL

M/R output

Pre-CHG PMP (+) Precharge pump status

Pre-CHG PMP (-) Precharge pump status

Snow mode switch

Control BST activated Control booster status

(Note 1): Check the pressure of the tire in normal condi t ion. (Note 2): ON/OFF timing of the ABS warning lamp ON: For approximately 0.5 seconds after the ignitio n switch is turned ON, or when a malfunction is detected. OFF: Approximately 0.5 seconds after the ignition switch is turned ON (when the system is in normal operation). (Note 3): ON/OFF timing of the VDC OFF indicator lamp ON: For approximately 0.5 seconds after the ignitio n sw itch is turne d ON, or when a malfunction is detected VDC OFF switch is ON. OFF: Approximately 0.5 seconds after the ignition switch is tur ned ON (when the system is in normal operation) or when VDC OFF switch is OFF. (Note 4): SLIP indicator lamp ON/OFF timing ON: For approximately 0.5 second s after the ignition s witch is turned ON , or when a malfunc tion is detected VD C/TCS function is acti vated while driving. OFF: Approximately 0.5 seconds after the ignition sw itch i s t ur ned O N ( w hen the system is in norma l oper at ion) and VDC/TCS function is not activated. Flashing: VDC/TCS function is active during driving.

Solenoid valve operation

VDC switch-over valve status

Actuator relay activated (ON/OFF)

Actuator motor and motor relay status (ON/ OFF)

Snow mode switch ON/OFF condition

II) or actuator relay is inactive (in fail-safe mode).

When the actuator (solenoid) is not active and actuator relay is active (the key switch ON).

When the actuator (switchover valve) is active (“Active test” with CONSULT-II) or the actuator relay is inactive (when fail-safe mode).

When the actuator (switchover valve) is inactive or the actuator relay is active (the key switch ON).

When the actuator relay is active (the engine is running).

When the actuator relay is not active (before the engine get started and in the fail-safe mode).

When the actuator motor and motor relay a re ac t ive (“Active test” with CONSULT-II).

When the actuator motor and motor relay are inactive.

Precharge pump activated ON Precharge pump not activated OFF Precharge pump activated ON Precharge pump not activated OFF Snow mode switch ON ON

Snow mode switch OFF Control booster activated ON Control booster not activated OFF

Condition

Reference value in

normal operation

OFF

(Reference) Check items

for malfunction

Solenoid and circuit

Switch-over valve and circuit

Actuator relay and circuit

Actuator motor, motor relay, and circuit

Precharge pump and circuit

–

BRC

Revision: 2004 April 2002 Q45

BRC-29

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TROUBLE DIAGNOSIS

Functions of CONSULT-II EFS000H9

CONSULT-II MAIN FUNCTION

In a diagnosis function (main function), there are “WORK SUPPORT”, “SELF-DIAGNOSTIC RESULTS”, “DATA MONITOR”, “ACTIVE TEST”, “FUNCTION TEST”, “ECU PART NUMBER”.

Diagnostic

test mode

WORK SUPPORT

SELF-DIAGNOSTIC RESULTS

DATA MONITOR

CAN DIAG SUPPORT MNTR

ACTIVE TEST

FUNCTION TEST

ECU PART NUMBER

This mode enables a technician to adjust some device s fas ter and m ore accurately by following the indications on CONSULT-II.

Self-diagnostic results can be read and erased quickly. BRC-33, "

Input/Output data in the VDC/TCS/ABS control unit can be read. BRC-30, "

The results of transmit / receive diagnostic of CAN commu ni cat io n can be re ad. —

Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the VDC/TCS/ABS control unit and also shifts some parameters in a specified range.

Performed by CONSULT-II instead of a technician to determine whe the r eac h system is “OK” or “N G”.

VDC/TCS/ABS control unit part number can be read. —

Function Reference

BRC-5, " tral Position of Steering Angle Sensor"

Adjustment of Neu-

SELF-DIAGNOSIS"

DATA MONITOR"

BRC-36, "

ACTIVE TEST"

—

DATA MONITOR

For details of the data monitor function, refer to the CONSULT-II Instruction Manual.

Operation Procedure

1. Turn the ignition switch OFF.

2. Connect the CONSULT-II connector to the vehicle-side data link connector.

3. Turn the ignition switch ON.

4. Touch “START (NISSAN BASED VHCL)” on the display.

5. Touch “VDC” on the display.

CAUTION:

Just after the engine is started, or the ignition switch is turned ON, “VDC” may not be displayed on

the system selection screen even if “START” is touched. In this case, start the self-diagnosis

again from step 2.

6. Touch “DATA MONITOR”.

7. Return to the monitor item selection screen, and touch any of “C/U INPUT ITEM”, “MAIN ITEM” or “ITEM MENU SELECTION”. Refer to BRC-30, "

Display Item List" .

8. Touch ″START″.

9. Screen of data monitor is displayed.

Display Item List

Monitor item selection

Item (Unit)

N-position signal (ON/OFF)

R-position signal (ON/OFF)

P-position signal (ON/OFF)

Control unit

input item

– ××

Main item

Item menu

select

N-position signal status (ON/OFF) judged by the CAN communication signal is displayed.

R-position signal status (ON/OFF) judged by the CAN communication signal is displayed.

P-position signal status (ON/OFF) judged by the CAN communication signal is displayed.

Remarks

Revision: 2004 April 2002 Q45

BRC-30

Page 31

TROUBLE DIAGNOSIS

Monitor item selection

Item (Unit)

Gear ×××

Wheel sensor FR (km/h,MPH)

Wheel sensor FL (km/h,MPH)

Wheel sensor RR (km/h,MPH)

Wheel sensor RL (km/h,MPH)

Throttle guide (%) ×××

Engine RPM (rpm) ×××

CAN communication start (ON/OFF) – ××

ASCD output (ON/OFF)

Steering angle signal (deg)

Yaw rate sensor (d/s)

Side G-sensor

)

(m/s Pressure sensor

(bar )

ABS c ont ro l unit voltage (V )

Stop lamp swit ch (ON/OFF)

Parking brake switch (ON/OFF)

OFF switch (ON/OFF)

ABS warning lamp (ON/OFF)

OFF lamp (ON/OFF)

Operation lamp (ON/OFF)

EV SIGNAL-FL (ON/OFF)

AV SIGNAL-FL (ON/OFF)

EV SIGNAL-RR (ON/OFF)

AV SIGNAL-RR (ON/OFF)

Control unit

input item

×××

– ××

×××

– ××

Main item

Item menu

select

Remarks

Gear position judged by the A/T inhibitor switch signal is displayed.

Wheel speed calculated by front RH wheel sensor signal is displayed.

Wheel speed calculated by front LH wheel sensor signal is displayed.

Wheel speed calculated by rear RH wheel sensor signal is displayed.

Wheel speed calculated by rear LH wheel sensor signal is displayed.

Throttle valve open/close status judged by the CAN communication signal is displayed.

Engine speed judged by the CAN communication signal is displayed.

Communication status of CAN communication is displayed.

ON/OFF status of the VDC/TCS operation signal to ASCD is displayed.

Steering angle detected by the steering angle sensor is displayed.

Yaw rate detected b y the yaw rate sensor is displayed.

Transverse acceleration detected by the side G - sensor is di splayed.

Brake fluid pressure detected by the pressure sensor is displayed.

Voltage supplied to VDC/TCS/ ABS control uni t is displ ayed.

Stop lamp switch (ON/OFF) status is displayed.

Parking brake switch (ON/OFF) status is displayed.

VDC O FF switch (ON / O FF) status is displayed.

ABS warning lamp (ON/OFF) status is displayed.

VDC warning lamp (ON/OFF) status is displayed.

SLIP indicator lamp (ON/OFF) status is displayed.

Front LH ABS inlet solenoid valve (ON/OFF) status is displayed.

Front LH ABS outlet solenoid valve (ON/OFF) status is displayed.

Rear RH ABS inlet solenoid valve (ON/OFF) status is displayed.

Rear RH ABS outlet solenoid valve (ON/OFF) status is displayed.

BRC

Revision: 2004 April 2002 Q45

BRC-31

Page 32

Item (Unit)

EV SIGNAL-FR (ON/OFF)

AV SIGNAL-FR (ON/OFF)

EV SIGNAL-RL (ON/OFF)

AV SIGNAL-RL (ON/OFF)

USV SIGNAL-P (ON/OFF)

USV SIGNAL-S (ON/OFF)

MAV SIGNAL-P (ON/OFF)

MAV SIGNAL-S (ON/OFF)

V/R SIGNAL (ON/OFF)

M/R OUTPUT (ON/OFF)

PR-CHG PMP (+) (ON/OFF)

PR-CHG PMP (-) (ON/OFF)

VDC fuel signal (ON/OFF)

TCS fuel signal (ON/OFF)

ABS fuel signal (ON/OFF)

EBD fuel signal (ON/OFF)

Brake fluid level switch (ON/OFF)

Snow mode switch (ON/OFF)

Control BST operation (ON/OFF)

M-mode judgement (OK/UNKWN)

OD cancel switch (ON/UNKWN)

EBD operation signal (ON/OFF)

ABS operation signal (ON/OFF)

TROUBLE DIAGNOSIS

Monitor item selection

Control unit

input item

– ××

––×

Main item

Item menu

select

Remarks

Front RH ABS inlet solenoid valve (ON/OFF) status is displayed.

Front RH ABS outlet solenoid valve (ON/OFF) status is displayed.

Rear LH ABS inlet solenoid valve (ON/OFF) status is displayed.

Rear LH ABS outlet solenoid valve (ON/OFF) status is displayed.

Primary-side USV solenoid valve (ON/OFF) status is displayed.

Secondary-side solenoid valve (ON/ OFF) status is displayed.

Primary-side MAV solenoid valve (ON/OFF) status is displayed.

Secondary-side MAV solenoid valve (ON/OFF) status is displayed.

Valve relay operation signal (ON/ OFF) status is displayed.

Front motor relay activation signal (ON/OFF) status is displayed.

Precharge pump drive signal (+) (ON/OFF) status is displayed.

Precharge pump drive signal (-) (ON/OFF) status is displayed.

VDC fuel signal (ON/OFF) status is displayed.

TCS fuel signal (ON/OFF) status is displayed.

ABS fuel signal (ON/OFF) status is displayed.

EBD fuel signal (ON/OFF) status is displayed.

Brake fluid level warning lamp switch (ON/OFF) status is displayed.

Snow mode switch (ON/OFF) status judged by CAN communication signal is displayed.

Control booster activation signal (ON/OFF) status judged by CAN communication signal is displayed .

M-mode (ON/OFF) status judged by CAN communication signal is displayed.

OD cancel switch (ON/OFF) status judged by CAN communication signal is displayed.

EBD operation (ON/OFF) status is displayed.

ABS operation (ON/OFF) status is displayed.

Revision: 2004 April 2002 Q45

BRC-32

Page 33

TROUBLE DIAGNOSIS

Monitor item selection

Item (Unit)

TCS operation signal (ON/OFF)

VDC operation signal (ON/OFF)

×: Applicable –: Not applicable

CAUTION:

1. A utomatic vehicle distance control system main control unit

Control unit

input item

––×

Main item

Item menu

select

TCS operation (ON/OFF) status is displayed.

VDC operation (ON/OFF) status is displayed.

Remarks

SELF-DIAGNOSIS Description

If a malfunction is det ected in the syst em, th e ABS warni ng lamp, VDC OFF indicat or lam p, and SLIP indic ator lamp on the meter turn on. In this case, perform the self-diagnosis as follows:

Procedure

1. Perform a BRC-40, "Basic Inspection" using information from the customer.

2. After the ignition s witch is tu rned OFF, connect the CONSULT-II connector to the vehicle-side da ta link connector. The data link connector is on the lower instrument cover).

3. Start the engine and drive at approx. 30 km/h (19 MPH) for approx. 1 minute.

4. After stopping the vehicle, with the engine still idling, touch “ START (NISSAN BASED VHCL)”, “VDC”, “SELF-DIAG RESULTS” on the CONSULT-II screen in this order.

CAUTION:

Just after starting the engine, or turning the ignition sw itch ON, “VDC” may not be displayed on the system selectio n screen even if “START (NISSAN BASED VHCL)” is touched. In this case, start the self-diagnosis again from step 2. If it cannot be shown after several attempts,

the VDC/TCS/ABS control unit may malfunction. Repair or replace the control unit.

5. The self-diagnosis result is displayed. (If necessary, touch “PRINT” to print the self-diagnosis result.)

● When “NO FAILURE” is shown, check the ABS warning lamp, VDC OFF indicator lamp, SLIP indicator

lamp. BRC-39, "

● CONSUL T-II self-diagnosis results are displayed without regard to occurrence timing. In some case, the

Refer to “For Correct and Qu ick Diagnosis”." .

later ones (timing value is small) appear on the next screen.

6. Go to appropriate “Inspection” chart according to “Indication item list” and repair or replace as necessary.

7. Start the engine and drive at approx. 30 km/h (19 MPH) for appr ox. 1 minute.

CAUTION:

Check again to make sure that there is NO MALFUNCTION on other parts.

8. Turn the ignition switch OFF to prepare for erasing the memory.

9. St art the engine and touch “START (NISSAN BASED VHCL)”, “VDC”, “SELF-DIAGNOSIS RESUL TS” and “ERASE MEMORY” on CONSULT-II screen in this order to ease the memory.

CAUTION:

If the memory cannot be erased, go to step 6.

10. Drive the vehic le at appr o x. 30 km/h ( 1 9 MPH ) an d ch ec k t hat t he ABS war ni ng lam p, VD C OFF indicator lamp, and SLIP indicator lamp stay off.

CAUTION:

TCS OFF switch is not cancelled.

BRC

PBIB0196E

Revision: 2004 April 2002 Q45

BRC-33

Page 34

TROUBLE DIAGNOSIS

Self-Diagnostic Items to Result Mode

Diagnostic item Malfunction detecting condition Check route FR LH SENSOR [OPEN] Circuit of front LH wheel sensor is open. RR RH SENSOR [OPEN] Circuit of rear RH wheel sensor is open. FR RH SENSOR [OPEN] Circuit of front RH wheel sensor is open. RR LH SENSOR [OPEN] Circuit of rear LH wheel sensor is open. FR LH SENSOR [SHORT] Front LH wheel sensor is short ed or input si gnal is abnor ma l. RR RH SENSOR [SHORT] Rear RH wheel sensor is shorted or input signal is abnormal. FR RH SENSOR [SHORT] Front RH wheel sensor is shorted or input signal is abnormal. RR LH SENSOR [SHORT] Rear LH wheel sensor is shorted or input signal is abnormal.

During the ABS actuator relay operation with OFF, when the actuator relay turns ON. Or when the control line for the relay is

ACTUATOR RELAY

STOP LAMP SW Stop lamp switch path is open.

PRESS SENSOR

STR ANGLE SIG

YAW RATE SEN

FR LH IN ABS SOL

FR LH OUT ABS SOL

RR RH IN ABS SOL

RR RH OUT ABS SOL

FR RH IN ABS SOL

FR RH OUT ABS SOL

RR LH IN ABS SOL

RR LH OUT ABS SOL

shorted to the ground. During the ABS actuator relay operation with ON, when the actu-

ator relay turns OFF. Or when the control line for the relay is open.

Pressure sensor signal line is open or shorted, or pressure sensor, pre charge pump is abnormal.

Neutral position of the steering angle sensor is dislocated, or the steering angle sensor is abnormal.

Y aw rate sensor is abnormal, or the yaw rate sensor signal line is open or shorted.

Circuit of the front LH ABS inlet solenoid valve is open or shorted, or the control line is open or shorted to the power supply or the ground.

Circuit of the front LH ABS outlet solenoid valve is open or shorted, or the control line is open or shorted to the power supply or the ground.

Circuit of the rear RH ABS inlet solenoid valve is open or shorted, or the control line is open or shorted to the power supply or the ground.

Circuit of the front RH ABS inlet solenoid valve is open or shorted, or the control line is open or shorted to the power supply or the ground.

Circuit of the front RH ABS outlet solenoid valve is open or shorted, or the control line is open or shorted to the power supply or the ground.

Circuit of the rear LH ABS inlet solenoid valve is open or shorted, or the control line is open or shorted to the power supply or the ground.

Circuit of the rear LH ABS outlet solenoid valve is open or shorted, or the control line is open or shorted to the power supply or the ground.

Wheel sensor and route [Inspection

Actuator relay and circuit [Inspection 10]BRC-59

Stop lamp switch and circuit [Inspection 14]

Pressure sensor and circuit [Inspection 4]

Steering angle sensor and route [inspection 5]

Yaw rate/transverse acceleration sensor and circuit [inspection 6]

Solenoid path and path [Inspection 8]

Revision: 2004 April 2002 Q45

BRC-34

Page 35

TROUBLE DIAGNOSIS

Diagnostic item Malfuncti on detect i ng condition Check route

VDC switch-over valve 1 on the primary side is open circuit or

PRIMARY SIDE USV

SECONDARY SIDE USV

PRIMARY SIDE MAV

SECONDARY SIDE MA V

PUMP MOTOR, MOTOR RELAY

PRE CHARGE PUMP MOTOR

SENSOR SYSTEM Wheel sensor input is abnormal. Speed sensor and circuit

BATTERY VOLT VDC/TCS/ABS control unit battery voltage is too low.

STEERING ANGLE SENSOR HAS NOT BEEN CORRECTED

STEERING ANGLE SENSOR COMMUNICATION SYSTEM

SIDE G·SENSOR

EMERGENCY BRAKE

ABS CONTROLLER VDC/TCS/ABS internal malfunction of control unit

SHIFT POSITION

CAN COMMUNICATION SYSTEM

shorted, or the control line is open or shorted to the power supply or the ground.

VDC switch-over valve 1 on the secondary side is open circuit or shorted, or the control line is open or shorted to the power supply or the ground.

VDC switch-over valve 2 on the primary side is open circuit or shorted, or the control line is open or shorted to the power supply or the ground.

During the actuator motor operation with ON, when the actuator motor turns OFF. Or when the control line for actuator motor relay is open.

During the actuator motor operation with OFF, when the actuator motor turns ON. Or when the control line for relay is shorted to ground.

During the pre-charging pump motor operation with ON, when the pre-charging pump motor turns OFF. Or when the pre-charging pump monitor is open.

During the pre-charging pump motor operation with OFF, when the pre-charging pump motor turns ON. Or wh en th e pre-charging pump monitor is shorted.

Neutral position correction of steeri ng angle sensor is not finished.

CAN communication system or ste ering angle sensor is abnormal.

Side G·sensor is abnormal, or the signal line of side G·sensor is open or shorted.

VDC/TCS/ABS control unit malfunction (pressure increase is too much or too little.)

P- position switch stuck to ON or ACM internal malfunction, VDC/TCS/ABS control unit internal failure.

● CAN communication line is open or sho rted.

● VDC/TCS/ABS control unit internal malfunction.

● Battery voltage for EMC is interrupted instantaneously for

approx. 0.5 seconds or more.

VDC switch-over valve and circuit [Inspection 8]

Actuator motor, motor relay, and circuit [Inspection 9]

Pre-charging pump motor and circuit [Inspection 7]

VDC/TCS/ABS control unit battery voltage path and ground circuit [Inspection 12]

Neutral position adjustment of steering angle sensor [Inspection 15]

Steering angle sensor and CAN communication circuit [Inspection 1]

Yaw rate /Side G·sensor and circuit [Inspection 6]

VDC/TCS/ABS control unit [Inspection 14]

VDC/TCS/ABS control unit [Inspection 3]

A/T cont rol unit and circuit VDC/TCS/ABS control unit and route [inspection 13]

Communication circuit between VDC/TCS/ABS control unit and units [Inspection 1]

BRC

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BRC-35

Page 36

TROUBLE DIAGNOSIS

Diagnostic item Malfunction detecting condition Check route

Communication circuit between the VDC/TCS/

Brake fluid level drops or communication line between the VDC/

LOW FLUID LEVEL

ENGINE SYSTEM 1-6 Major engine components are abnormal

TCS/ABS control unit and the fluid level warning switch is open or shorted.

ACTIVE TEST Procedure

CAUTION:

● Do not perform active test while driving the vehicle.

● Make sure that completely bleed air from the brake system.

● The active test cannot be performed with the ABS warning lamp on.

1. Connect the CONSULT-II connector to the vehicle-side data link connector and start the engine .

2. Touch “START (NISSAN BASED VHCL)” on the display.

3. Touch “VDC” and “ACTIVE TEST”.

4. The test item selection screen is displayed.

5. Touch necessary test item.

ABS control unit and the fluid level warning switch. Reservoir tank fluid [Inspection 16]

Engine system [Inspection 2]

6. Touch “START” with “MAIN SIGNALS” line inverted.

7. The active test screen is displayed.

Solenoi d Valve

1. Select (test 1) from each test item s for the ABS fu nction active test, and (test 2) for VDC/TCS function active test .

2. Touch “UP”, “KEEP”, “and”, “DOWN” for test 1 and “UP”, “ACT UP”, and “ACT KEEP” for test 2. And check that the solenoid valves operate as solenoid valve operation chart using the screen monitor. Refer to “Solenoid valve operation chart”.

Solenoid Valve Operation Chart

Test 1 Test 2

FR RH ABS S/V

Operation

EV SIGNAL. FR OFF ON ON OFF OFF OFF AV SIGNAL. FR OFF OFF ON* OFF OFF OFF USV SIGNAL. P OFF OFF OFF OFF ON ON MAV SIGNAL. P OFF OFF OFF OFF ON* OFF

Up Kee p Do wn Up ACT Up ACT Keep

SFIA0162E

SFIA0163E

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BRC-36

Page 37

TROUBLE DIAGNOSIS

Operation

EV SIGNAL. FL OFF ON ON OFF OFF OFF

FR LH ABS S/V

RR RH ABS S/V

RR LH ABS S/V

FR ABS S/Vs

RR ABS S/Vs

*: ON for 1 to 2 seconds after the touch, and then OFF

AV SIGNAL. FL OFF OFF ON* OFF OFF OFF USV SIGNAL. P OFF OFF OFF OFF ON ON MAV SIGNAL. P OFF OFF O FF OFF ON* OFF EV SIGNAL. RR OFF ON ON OFF OFF OFF AV SIGNAL. RR OFF OFF ON* OFF OFF OFF USV SIGNAL. S OFF OFF OFF OFF ON ON MAV SIGNAL. S OFF OFF O FF OFF ON* OFF EV SIGNAL. RL OFF ON ON OFF OFF OFF AV SIGNAL. RL OFF OFF ON* OFF OFF OFF USV SIGNAL. S OFF OFF OFF OFF ON ON MAV SIGNAL. S OFF OFF O FF OFF ON* OFF EV SIGNAL. FR OFF ON ON OFF OFF OFF AV SIGNAL. FR OFF OFF ON OFF OFF OFF EV SIGNAL. FL OFF ON ON OFF OFF OFF AV SIGNAL. FL OFF OFF ON OFF OFF OFF EV SIGNAL. RR OFF ON ON OFF OFF OFF AV SIGNAL. RR OFF OFF ON OFF OFF OFF EV SIGNAL. RL OFF ON ON OFF OFF OFF AV SIGNAL. RL OFF OFF ON OFF OFF OFF

Test 1 Test 2

Up Keep Down Up ACT Up ACT Keep

BRC

NOTE:

● If the active test is performed with the brake pedal depressed, the pedal stroke may be changed. This is a

normal condition.

● “TEST STOP” is displayed 6 seconds after the op eration star t.

● After “TEST STOP” is displayed, to perform the test again, repeat the step 6 of the operation procedure.

Revision: 2004 April 2002 Q45

BRC-37

Page 38

TROUBLE DIAGNOSIS

VDC Off Led

Touch “ON” and “OFF ” to check that VDC OFF indicator lamp operates as follows.

Operation ON OFF

VDC OFF LED ON Lamp OFF

NOTE:

During the active test when “OFF” on the screen is touched, all of the VDC OFF indicator lamp, SLIP indicator lamp, and ABS warning lamp flash once. This is not abnormal.

ABS Motor

Touch “ON” and “OFF” on the screen to check that the M/R output operates as follows.

Operation ON OFF

M/R OUTPUT ON OFF

NOTE:

● If the active test is performed with the brake pedal depressed, the pedal stroke may be changed. This is a

normal condition .

● “TEST STOP” is displayed 10 seconds after the operation start.

Precharge Pump

Touch “ON”and “OFF” on the screen to c heck that the pre-CHG PM P (+) and pre-CHG P MP (-) operate as follows.

Operation ON OFF PR CHG PMP ( + ) ON OFF PR-CHG PMP ( − )ON ON*

*: Touch “ON ”, “OFF” in turn, “OFF” is shown and approx. 1 - 2 seconds later it change s to “ ON ”.

SLIP LED

Touch “ON” and “OFF” on the screen to check that the SLIP indicator lamp operates as follows.

Operation ON OFF SLIP LED ON Lamp OFF

NOTE:

During the active test when “OFF” on the screen is touched, all of the VDC OFF indicator lamp, SLIP indicator lamp, and ABS warning lamp flash once. This is not abnormal.

ABS Warning Lamp

Touch “ON” and “OFF” on the screen to check that the ABS warning lamp operates as follows.

Operation ON OFF

ABS WARNING LAMP ON Lamp OFF

NOTE:

During the active test when “OFF” on the screen is touched, all of the VDC OFF indicator lamp, SLIP indicator lamp, and ABS warning lamp flash once. This is not abnormal.

ASCD Output

Touch “ON” and “OFF” on the screen to check that the ASCD output operates as follows.

Operation ON OFF

ASCD OUTPUT ON OFF

Revision: 2004 April 2002 Q45

BRC-38

Page 39

TROUBLE DIAGNOSIS

Refer to “For Correct and Quick Diagnosis”. EFS000HA

PRECAUTIONS FOR TROUBLE DIAGNOSIS

● Before performi ng the trouble diagnosi s, alway s read the general infor mation ( GI) to conf irm the gen eral

precautions.

● After replacement of VDC/TCS/ABS control unit, steering angle sensor, steering parts, suspension parts,

or tires, and adjustment of alignment, always adjust the neutral position of steering angle sensor before driving.

● When the VDC/TCS/ABS control unit is replace d, check that the label on the com puter unit is identical

color.

● After completi ng the troubl e diagnosis , always eras e the malfun ctioning me mory. BRC-30, "Functions of

CONSULT-II" or BRC-41, "Self-Diagnoses" .

● When inspecti on o f th e con tinui ty or vol t age b etwe en un its is pe rf ormed, che ck th e con nect or te rmin als for

disconnection , loosen ess, ben d, or collapse. If an y malfun ction is detected, repai r or replac e the appl icable part.

● Intermittent problems may be caused by a malfunction on harness, connector, or terminal. Move the har-

nesses, harness connectors, or t erminals by hand to make sure that there is no contact malfunction.

● If a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.

● For self-diagnos is, active test, and work suppo rt of VDC/TCS/ABS cont rol unit with CONSULT-II, stop

and connect CONSULT -II and select “VDC”.

● CONSULT-II self-diagnosis results are displayed without regard to occurrence timing. In some case, the

later ones (timing value is small) appear on the next screen.

● While the self-diagnosis results of CONSULT-II shows a malfunction, if CONSULT-II active test is per-

formed, an engine system malfunction may be indicated. In this case, start the engine to resume the normal screen.

● VDC/TCS/ABS system electronically controls the brake operation and engine output. The following symp-

toms may be caused by the normal operations.

Symptom Symptom description Result

During VDC, TCS, or ABS operation, sometimes a faint noise can be heard. This is a motor or pre charge pump operation noise i n the VDC/

Motor operation noise

System operation check noise

TCS operation (SLIP lamp ON)

ABS operation (Longer stopping distance)

Sluggish feel

TCS/ABS actuator. Just after the engine starts, the motor operating noise may be heard.

This is a normal status of the system operation check. When the engine starts, a “click” noise may be heard from the engine

compartment. This is a normal status of the system oper ation check. When the vehicle is passing through a road where the surf ace f rict ion

coefficient varies or the wheel speed changes suddenly by downshifting or depressing of the accelerator pedal fully, TCS may be activated temporarily.

Before the speedometer inspection, turn VDC OFF switch off to cancel the VDC/TCS function.

When the accelerator pedal is depress ed on a chassis dynamometer (front wheel fixing type), the vehicle speed wi ll not increase. This is not abnormal, because TCS is activated by the stationary front wheels. The warning lamp may also illuminate to show “sensor system failure” in this case. This is not abnormal either, because the stationary front wheels are detected. Restart the engine, and drive the vehicle at 30 km/h or higher to check that the warning lamp no longe r illum in at es.

The stopping distance may be longer for the vehicles with ABS when the vehicle is driver on snowy and rough road. When driving on the road like that, slow down the speed.

Depending on road circumstances, the driver may have a sluggish feel. This is not abnormal, because the optimum traction has the highest priority (safety first) by TCS operation. Sometimes the driver has a slight sluggish feel against the substantial acceler ato r ped al op era tion.

Normal

Normal Cancel the VDC/TCS function for the inspection on a chassis dynamometer.

Normal

BRC

Revision: 2004 April 2002 Q45

BRC-39

Page 40

TROUBLE DIAGNOSIS

ABS Warning Lamp, VDC OFF Indicator Lamp, SLIP Indicator Lamp ON/OFF Timing

×: ON –: Lamp OFF

Condition

When the ignition switch is OFF

After the ignition switch is turned ON For approx. 0.5 seconds

Ignition switch ON Approx. 0.5 seconds later

When the VDC OFF sw it ch turns ON (VDC function OFF).

VDC/TCS/ABS malfunction

When the VDC/TCS is abnormal.

ABS warning

lamp

––– –

××× –

–––

– × ––

××× –

××–

– ×× –

VDC OFF LED SLIP LED Remarks

Lamp goes off approx. 2 seconds after the engine start.

When the VDC/TCS/ABS control unit is abnormal (power supply or ground malfunction).

Basic Inspection EFS000HB

PRELIMINARY CHECK 1: (BRAKE FLUID LEVEL AND LEAK INSPECTION)

1. Chec k the fluid level in the brake reservoir tank. If the fluid level is low, refill the brake fluid.

2. Check the area around the brake piping, VDC/ TCS/ABS actuator and pre charge pump for leaks. If a leak or oozing is detected, check as follows:

● I f the connections at the ABS actuator or at th e pre charge pump are loose, tighten the pi ping to the

specified torque. Then chec k again for leaks, and make sure that there is no fluid leak.

● If the flare nuts at the connections and the threads of the VDC/TCS/ABS actuator are damaged,

replace the damaged parts. Then check again for leaks, and make sure that there is no fluid leak.

● I f a leak or oozing is de tected on other parts than the AB S actuator connections and the pre charge

pump connections, wipe the applicable part with a clean cloth. Then check again for leaks, and if there

3. Check the brake disc rotor and pads.

PRELIMINARY 2: (INSPECTION FOR LOOSE POWER SUPPLY TERMINAL)

Check the battery for lo oseness on the battery positive/ negative terminals and ground conn ection. If looseness is detected, tighten the piping to the specified torque. Check that the battery voltage does not drop and the alternator is normal.

is still a leak or oozing, replace the damaged part.

● I f a lea k or oo zing is dete cted on t he VDC/TCS/ ABS actua tor bod y or the p re ch arge-p ump b ody, wipe

the applicab le part with a cl ean cloth . Then ch eck again f or leaks, a nd if ther e is still a leak or o ozing, replace the ABS actuator body or the pre charge pump body.

CAUTION:

Do not disassemble the actuator body and the pre charge pump.

PRELIMINARY 3: (INSPECTION FOR ABS WARNING LAMP, VDC OFF INDICATOR LAMP, AND SLIP INDICATOR LAMP)

1. Check that the ABS warning lamp is ON for approx. 0.5 seconds when the ignition switch is turned ON. If it does not turn on, check the ABS warning lamp and the circuit, and the combination meter.

2. Check that OFF indica tor lamp is ON for approx. 0.5 seconds w hen the ig nition switc h is turned ON. If it does not turn ON, check the TCS OFF indicator lamp and the circuit, and the combination meter.

3. Check t ha t th e SLI P ind ic at or l am p is ON for a ppr ox . 0 .5 se co nd s wh en the i gn i tion sw it ch is tu r ne d ON. I f it does not turn ON, check the SLIP indicator lamp and the circuit.

4. With the engine running, check the VDC OFF indicator lamp turns ON and OFF when the VDC OFF switch turns ON and OF F. If it dose not operate in a ccor dance w ith t he swit ch, check the VD C OFF switch and the circuit.

Revision: 2004 April 2002 Q45

BRC-40

Page 41

TROUBLE DIAGNOSIS

5. Check that the VDC OFF indicator lamp turns OFF after approx. 2 seconds delay when the VDC OFF switch turns OFF (not operated). If the VDC OFF indicator lamp does not turn OFF in 10 seconds from the engine start, perform the self-diagnosis of VDC/TCS/ABS control unit.

Self-Diagnoses EFS000HC

FUNCTION

If a malfunctio n is detected in t he system, th e ABS warning la mp and VDC OFF indicator lam p in the meter turn ON. In this case, short-circuit the terminal No. 8 on the vehicle-side data link connector on the lower instrument panel to body ground in order to change to the self-diagnosis mode. Then the SLIP warning lamp blinks to display the malfunction part.

PROCEDURE

1. Perform a basic inspection based on the information from the customer.

2. Drive the vehicle at speed 30 km/h (19 MPH) or higher for 1 minute to check for an y ma lfu nc tion.

3. Stop the vehicle and turn the ignition switch OFF.

4. Short-circuit the vehicle-side data link connector terminal No. 9 to body ground.

5. Turn the ignition switch ON to start the self-diagnosis mode.

CAUTION:

● During the self-diagnosis, the vehicle-side data link connec-

tor terminal No. 8 must be shorted. Do not depress the brake pedal. Do not start the engine. (The self-diagnosis cannot be started.)

● If the SLIP indicator lamp dose not start flashing, check the VDC/TCS/ABS control unit switch

power circuit and the ground circuit.

6. Approx. 3 seconds later from the start of the self-diagnosis mode, the SLIP indicator lamp flashes and the trouble code is displayed.

CAUTION:

If the SLIP indicator lamp do se not start flashing, check the VDC/TCS/ABS control unit switch power circuit and the ground circuit.

NOTE:

The display stays on for 5 minutes (Max.) And the n stops. But when the ignit ion switch is turned OFF to ON

again, the lamp starts flashing.

7. Read the trouble code to check the malfunctioning part, and repair according to the trouble diagnosis procedure.

8. After the malfunc tioning part i s repaired, erase th e troubl e code stored in the co ntrol unit. Refer to BRC-

42, "HOW TO ERASE SELF-DIAGNOSIS RESULTS (MALFUNCTION)"

9. Start the self-diagnosis again to check that the code has been er ased completely.

10. Disconnect the data link connector terminal No. 9 from body ground to complete the self-diagnosis.

11. Drive the vehicle at approx. 30 km/h (19 MPH) for approx. 1 minute to check that the VDC OFF indicator lamp, SLIP indicator lamp, and ABS warning lamp do not turn ON.

BRC

SBR647E

HOW TO READ SELF-DIAGNOSIS RESULTS (MALFUNCTION)

● Read the numbers as th e first and second digits using the SLIP indic ator lamp self-diagnosis. Refe r to

BRC-42, "

● When several malfunctions are detected at one time, a maximum of 3 code numbers can be stored; the

latest malfunction will be displayed first.

● The display begins with the start code No. 12. After that 3 code numbers (Max) are displayed from the lat-

est one. Then the display returns to the start code and repeats.

Revision: 2004 April 2002 Q45

INDICATION ITEM" .

BRC-41

Page 42

TROUBLE DIAGNOSIS

● If only NO FAILURE is detected, the start code No. 12 is displayed.

SBR457DA

HOW TO ERASE SELF-DIAGNOSIS RESULTS (MALFUNCTION)

1. Turn the ignition switch ON, and start the engine.

2. Drive the vehicle at speed 30 km/h (19 MPH) or higher for 1 minute to check for any malfunction.

3. Stop the vehicle and turn the ignition switch OFF.

4. Short-circuit the vehicle-side data link connector terminal No. 9.

5. Turn the ignition switch ON to start the self-diagnosis mode.

CAUTION:

During the self-diag nosis, the vehicle-side data link con nector terminal No. 8 must be short-circuited. Do not depress the brake pedal and start the engine.

6. Approx. 3 seconds later from the start of the self-diagnosis mode, the SLIP indicator lamp flashes and the trouble code is displayed.

CAUTION:

If the SLIP indicator lamp dose not start flashing, chec k the VDC/TCS/A BS control uni t switch power path and the ground circuit.

NOTE:

The display stays on for 5 minutes (Max.) And then stops. But when the ignition switch is turned OFF to ON again, the lamp starts flashing.

7. After starting the self-dia gnosis, disconnect th e vehicle-side data li nk connector termina l No. 9 from the

short-circuited line to start the trouble code memory erasing mode.

8. After starting the trouble code memory erasing mode, short-circuit the vehicle-side data link connector terminal No. 9 intermi ttently thre e times or mo re within appro ximately 12.5 second s. (Each termi nal ground must last for 2 seconds or more.)

9. When the terminal finally remains open, the trouble codes are erased to complete the self-diagnosis.

10. Start the self-diagnosis mode again to check that the erasing has been completed .

NOTE:

If the erasing has been completed, display the start code 12.

11. Disconn ect the vehicle-side data l ink connector terminal N o. 9 from body ground to complete the selfdiagnosis mode.

12. Connect the vehi cle-s ide da ta link con nect or termi nal No . 9 and dri ve the veh icle at 30 km/h (19 MP H) or higher for 1 minute to check that the warning lamp and the indicator lamp do not turn on.

13. Turn the ignition switch OFF.

SBR631D

INDICATION ITEM

DTC code

No.

CAN communication circuit or ECM (Note 3)

Location

Revision: 2004 April 2002 Q45

Detection timing

IGN ON

During driving

××– (Note 1) ×××

BRC-42

Indicator lamp and warning lamp

ABS VDC OFF SLIP

Failsafe in opera-

tion

Check

route

Inspec-

tion 2

Page 43

TROUBLE DIAGNOSIS

DTC code

No.

15 Stop lamp switch and circuit ×× × × ××

18 Wheel sensor and rou te ×× × × ××– 21

22 Front RH speed sensor and ci rc uit – ×× ×××

25 26 Front LH speed sensor and circuit – ×× ×××

32 Rear RH speed senso r and circ ui t – ×× ××× 35

36 Rear LH speed sens or and circuit – ×× ×××

CAN communication circuit or ECM (Note 3)

Front RH speed sensor and circuit [Open circuit]

Front LH speed sensor and circuit [Open circuit]

Rear RH speed sensor and circuit [Open circuit]

Rear LH speed sensor and circuit [Open circuit]

Front RH outlet ABS solenoid valve and route

Front RH inlet ABS solenoid valve and route

Primary-side VDC switch-ov er val ve 1 and circuit

Secondary-side VDC switch-over valve 1 and circuit

Front LH outlet ABS solenoid valve and circuit

Front LH inlet ABS solenoid valve and circuit

Primary-side VDC switch-ov er val ve 2 and circuit

Secondary-side VDC switch-over valve 2 and circuit

Rear RH outlet ABS solenoid valve and circuit

Rear RH inlet ABS solenoid valve and circuit

Rear LH outlet ABS solenoid valve and circuit

Rear LH inlet ABS solenoid valve and circuit

VDC/TCS/ABS control unit power supply circuit and ground circuit

Location

Detection timing

IGN ON

During driving

××–(Note 1) ×××

×× × × ××

×× × × ×

Indicator lamp and warning lamp

ABS VDC OFF SLIP

Failsafe in opera-

tion

–(Note 1)Inspec-

Check

route

–

Inspec-

tion 11

–

Inspec-

tion 8

tion 16

BRC

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BRC-43

Page 44

TROUBLE DIAGNOSIS

DTC code

No.

61 Actuator motor, motor relay, and circuit ×× × × ××

63 Actuator relay and circ ui t ×× × × ××

65 Pre-charging pump motor and circuit ××– (Note 2) ×××

Reservoir tank brake fluid level and,

71 VDC/TCS/ABS control unit ××– (Note 2) ×××

79 VDC/TCS/ABS control unit – ×× ×××

91 Pressure sensor and path ×× × × ××

92 Steering angle sensor and circuit ××– (Note 2) ×××

93 Yaw rate sensor and circuit ××– (Note 2) ×××

94 Side G-sensor and route ××– (Note 2) ×××

Not dis-

played

(Not blink)

×: Applicable –: Not applicable

communication circuit between the VDC/TCS/ABS control unit and fluid level warning switch

CAN communication path, VDC/TCS/ ABS control unit, and st eer in g angle sensor

Steering angle sensor and CAN communication circuit

A/T control un it and circ uit, and VDC / TCS/ABS con trol unit and circui t

Neutral position of steering angle sensor

SLIP indicator lamp and circuit, and VDC/TCS/ABS control unit

Location

Detection timing

IGN ON

During driving

××– (Note 2) ×××

– × – (Note 2) ×××

× – – (Note 2) ×××

×× –––––

Indicator lamp and warning lamp

ABS VDC OFF SLIP

Failsafe in opera-

tion

Check

route

Inspec-

tion 9

Inspec-

tion 10

Inspec-

tion 7

Inspec-

tion 16

Inspec-

tion 3

Inspec-

tion 1

Inspec-

tion 1

Inspec-

tion 14

Inspec-

tion 4

Inspec-

tion 5

Inspec-

tion 6

Inspec-

tion 6

Inspec-

tion 13

Inspec-

tion 15

CAUTION:

● Dep ending on the malfunction points in the VDC/TCS/ABS control unit, only the SLIP indicator

lamp will turn OFF.

● If an electronic malfunction occurs in the system components, the fail-safe function turns the ABS

warning lamp ON. Depending on the malfunction condition, ABS and EBD operate as follows.

– ABS is inactive, and EBD is active. – Both ABS and EBD are inactive (normal braking status) – With the above status, the self-diagnosis when the ign ition switch is turn ed on and the vehicl e is

initially started is performed. ABS self-diagnosis noise may be heard as usual.

(Note 1): The fail -sa fe is ina ctiv e, but the VD C/TCS /ABS operat ion is deac tiva ted , resul tin g in the normal braking of models without VDC/TCS/ABS. After the power supply has resumed, the ABS warning lamp and VDC OFF indicator lamp and VDC/TCS/ABS can be operated. (Note 2): Only the VDC/TCS control stops and the fail-safe is active, but ABS can be operated.

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BRC-44

Page 45

TROUBLE DIAGNOSIS

(Note 3): Refer to EC-151, "DTC U1000 CAN COMMUNICATION LINE" ,LAN-21, "CAN COMMUNICATION" for details of malfunctioning part.

Inspection 1 CAN Communication Line or VDC/TCS/ABS Control Unit and Steering Angle Sensor System

Inspection procedure

EFS000HD

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

CAN communication system

Steering angle sensor communication system

Are any items other than above indicated in self-diagnosis results?

YES >> Repair or replace the indicated item. NO >> GO TO 2.

77,78

2. CHECK THE HARNESS AND CONNECTORS BETWEEN VDC/TCS/ABS CONTROL UNIT AND

STEERING WHEEL ANGLE SENSOR.

1. Disconnect VDC/TCS/ABS control unit connector and steering wheel angle sensor connector with the ignition switch OFF.

2. Check the harnes s between VDC/TCS/ABS c ontrol unit and steering wheel angle sensor for open and shorted circuit.

3. Check the connect ors for each control unit an d sensor. (Check the connector housin g for disconnected, loose, bent, and collapsed terminals.)

OK or NG

OK >> GO TO 3. NG >> Repair disconnected harness or poorly connected connectors. GO TO 3.

3. SELF-DIAGNOSIS RESULT CHECK 2

BRC

1. Connect the connectors to each control unit and sensor and turn the ignition sw itch ON.

2. After erasing the self-diagnosis result, start the engine to perform the self-diagnosis again.

Is only

“steering wheel angle sensor communication system” indicated in the self-diagnosis item display?

YES >> Spiral cable (Repl ace steering wheel angle sens or to adjust the neutral positio n of the steering

angle sensor. Refer to PS-7, "

NO >> GO TO 4.

CHECKING NEUTRAL POSITION ON STEERING WHEEL" .

4. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect VDC/TCS/ABS control unit connector and steering angle sensor connector. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, rep a ir or replace terminal.

2. Securely reconnect connectors and perform self-diagnosis.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

CAN communication system

Steering angle sensor communication system

Is above displayed in the self-diagnosis item?

YES >> Print out self-diagnostic results and go to LAN-21, "CAN COMMUNICATION" . NO >> Connector terminal conne ction is loose, damaged, open or shorted.

77,78

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BRC-45

Page 46

TROUBLE DIAGNOSIS

Inspection 2 Engine System EFS000HE

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Engine system 2 7 Engine system 3 8 Engine system 4 9 Engine system 5 13 Engine system 6 11

Are any items other than above indicated in self-diagnosis results?

YES >> Repair or replace harness or connector. NO >> GO TO 2.

2. SELF-DIAGNOSIS RESULT CHECK 2

1. Perfo rm E CM self-diagnosis a nd rep ai r or r epl ace ha rness or co nnec tor, th en pe rfo rm the ECM self-diagnosis again.

2. Perform VDC/TCS/ABS control unit self-diagnosis again.

OK or NG

OK >> Inspection End NG >> Repair or replace harness or connector. Perform the self-diagnosis again.

Inspection 3 VDC/TCS/ABS Control Unit System EFS000HF

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

ABS controller 71

Are any items other than

YES >> Repair or replace harness or connector. Perform the self-diagnosis again. NO >> Replace VDC/TCS/ABS control unit and perform VDC/TCS/ABS control unit self-diagnosis

again.

“ABS Controller” indicated in the self-diagnosis display item?

Revision: 2004 April 2002 Q45

BRC-46

Page 47

TROUBLE DIAGNOSIS

Inspection 4 Pressure Sensor and the Circuit between Pressure Sensor and VDC/TCS/ABS Control Unit

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

SFIA0586E

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Pressure sensor system 91

“Pressure sensor” indicated in the self-diagnosis display item?

>> GO TO 2.

EFS000HG

BRC

2. SELF-DIAGNOSIS RESULT CHECK 2

1. Disconnect the connectors of pre ssure senso r and VDC/TCS/ABS c ontrol unit, an d connect them again correctly.

2. Perform VDC/TCS/ABS control unit self-diagnosis again.

OK or NG

OK >> Repair or replace the poorly connected connector, then perform self-diagnosis again. NG >> GO TO 3.

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BRC-47

Page 48

TROUBLE DIAGNOSIS

3. PRESSURE SENSOR CIRCUIT INSPECTION

1. Disconnect the connectors of pressure sensor and VD C/TCS/ABS control unit.

2. Check for continuity between VDC/TCS/ABS control unit harness connector E218 and pressure sensor harness connector E21.

SFIA0537E

VDC/TCS/ABS control unit

(Harness connector E218)

69 (P/L) 30 (P/L) Yes 68 (L/G) 31 (L/G) Yes

67 (G/OR) 32 (G/OR) Yes

OK or NG

OK >> GO TO 4. NG >> Repair or replace disconnected harness.

(VDC actuator harness connector E21)

Pressure sensor

Continuity

4. PRESSURE SENSOR INSPECTION

Check the pressure sensor value in “data monitor”.

Condition Data monitor display

Brake pedal depressed Positive value

When the brake pedal is released. Approx. 0 bar

OK or NG

OK >> GO TO 5. NG >> Pressure sensor malfunction. Replace VDC/TCS/ABS actua tor (with pressure sensor).

5. SELF-DIAGNOSIS RESULT CHECK 3

Perform the VDC/TCS/ABS control unit self-diagnosis again. Are self-diagnosis item displays indicated?

YES >> GO TO 6. NO >> Inspection End

6. SELF-DIAGNOSIS RESULT CHECK 4

Increase the engine speed up to 500 rpm and perform VDC/TCS/ABS control unit self-diagnosis. Are self-diagnosis item displays indicated?

YES >> Precharge pump malfunction. Repair or replace the precharge pump. NO >> Inspection End

Revision: 2004 April 2002 Q45

BRC-48

Page 49

TROUBLE DIAGNOSIS

Inspection 5 Steering Wheel Angle Sensor and the Path between Steering Wheel Angle Sensor and VDC/TCS/ABS Control Unit

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Steering angle sensor system 92

EFS000HH

SFIA0569E

BRC

Perform inspection 1 CAN communication system.

“steering angle sensor ” indicated in the self-diagnosis display item?

YES >> ● Repair or replace the poorly connected connector.

– Check the conn ector hous ing fo r disco nnec t, lo ose, bent and co llap se term inal s. If any m alfunc -

tion is detected, repair or replace the applicable part.

NO >> GO TO 2.

2. STEERING WHEEL ANGLE SENSOR CIRCUIT CHECK

1. Disconnect VDC/TCS/ABS control unit connector and steering wheel angle sensor connector.

2. Check for continuity between VDC/TCS/ABS control unit harness connector E218 and steering wheel angle sensor harness connector M52.

VDC/TCS/ABS control unit

(Harness connector E218)

2 (S/B) 3 (S/B) Yes

61 (LG/B) 4 (LG/B) Yes

63 (P/B) 5 (P/B) Yes

OK or NG

OK >> GO TO 3. NG >> Repair or replace the disconnected harness.

Steering wheel angle sensor

(Harness connector M52 )

Continuity

SFIA0538E

Revision: 2004 April 2002 Q45

BRC-49

Page 50

TROUBLE DIAGNOSIS

3. DATA MONITOR CHECK

Perform “d ata monitor” in “steering angle signal” an d check that it is in normal condition.

Steering condition Data monitor

Straight-ahead – 5deg to +5deg

Turn the wheel to the right by 90°. Approx. + 90deg

Turn the wheel to the left by 90°. Approx. - 90deg

OK or NG

OK >> Perform VDC/TCS/ABS control unit self-diagn os is aga in. NG >> Replace the spiral cable (steering wheel angle sensor) and adjust the neutral position of steering

angle sensor. BRC-5, "

Adjustment of Neutra l Posi tio n of Steering Angle Sensor " .

Inspection 6 Yaw Rate Sensor/Side G-sensor and Path between Yaw Rate Sensor/Side G-sensor and VDC/TCS/ABS Control Unit.

Inspection procedure

EFS000HI

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CAUTION:

When the vehicle on a turn-table at an entrance of parking lot or on a moving unit, the VDC OFF indicator lamp turns ON, and the self-diagnosis wit h CONSULT-II may indicate that the yaw rate se nsor system is malfunction. In this case , the yaw rate sens or is not malfu nction. Move the v ehicle fro m the turn-table or other moving unit, and restart the engine. This will return the status normal.

“yaw rate sensor system” and “Side G-sensor” indicated on self-diagnosis display.

Are

>> GO TO 2.

CONSULT-II indication item Diagnostic trouble code

Y aw rate sensor system

Side G-sensor system

93,94

SFIA0570E

Revision: 2004 April 2002 Q45

BRC-50

Page 51

TROUBLE DIAGNOSIS

2. SELF-DIAGNOSIS RESULT CHECK 2

1. Disconnect connectors of yaw rate/side G-sensor and VDC/TCS/ABS control unit.

2. Check for continuity between VDC/TCS/ABS control unit harness connector E218 and yaw rate/side G·sensor harness connector M99.

VDC/TCS/ABS control unit

(Harness connector E218)

78 (L/W) 1(L/W) Yes

77 (Y/B) 2 (Y/B) Yes 34 (OR) 3 (OR) Yes 79 (R/L) 4 (R/L) Yes

18 (PU/W) 5 (PU/W) Yes

80 (W/R) 6 (W/R) Yes

OK or NG

OK >> GO TO 3. NG >> Repair or replace the disconnected harness.

Yaw rate/side G-sensor

(Harness connector M99 )

SFIA0539E

Continuity

BRC

3. YAW RATE SENSOR/SIDE G-SENSOR CIRCUIT CHECK

Vehicle status

While the vehicle is stopped - 4 to +4deg/s - 1.1 to +1.1m/s2

Right-hand turn Negative value Negative value

Left turn Positive value Positive value

Yaw rate sensor

(Date monitor standard)

Check yaw rate /side G-sensor is in normal operation in “data monitor”. OK or NG

OK >> Perform VDC/TCS/ABS control unit self-diagnosis again. NG >> Yaw rate s ensor/side G·sensor malfunction. After replacing the sensor, perform the self-diagnosis

of VDC/TCS/ABS control unit again.

Side G-sensor

(Data monitor standard9

Revision: 2004 April 2002 Q45

BRC-51

Page 52

TROUBLE DIAGNOSIS

Inspection 7 Precharging Pump Motor and Circuit EFS000HJ

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

SFIA0571E

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Precharge motor 65

“precharge motor ”indicated in the self-diagnosis item display?

>> GO TO 2.

2. SELF-DIAGNOSIS RESULT CHECK 2

1. Remove the connectors for precharge pump motor and VDC/TCS/ABS control unit.

2. Securely connect the connectors. Perform the self-diagnosis again. Are self-diagnosis item displays indicated?

YES >> GO TO 3. NO >> Repair or replace the poorly connected connector.

3. PRECHARGE PUMP MOTOR PATH CHECK

1. Remove the connectors for the precharge pump motor and VDC/TCS/ABS control unit.

2. Check for continuity between VDC/TCS/ABS control unit harness connector E218 and precharge pump motor harness connector E72.

VDC/TCS/ABS control unit

(Harness connector E218)

24 (W/L) 1 (W/L) Yes

22 (L/R) 2 (L/R) Yes

OK or NG

OK >> GO TO 4. NG >>

● Harness disconnection

● Repair or replace the disconnected harness.

Precharge pump

(Harness connector E72)

SFIA0540E

Continuity

Revision: 2004 April 2002 Q45

BRC-52

Page 53

TROUBLE DIAGNOSIS

4. PRECHARGE PUMP MOTOR POWER SUPPL Y SYSTEM INSPECTION

1. Remove th e negative and po sitive terminals from battery terminal.

2. Check for continuity between VDC/TCS/ABS control unit harness connector E218 and battery positive terminal.

SFIA0541E

VDC/TCS/ABS control unit

(Harness connector E218)

51 (Y) Pos iti ve te rmi nal Yes

OK or NG

OK >> Replace the precharge pump motor. Perform the self-diagnosis again. NG >> Harness disconnection between VDC/TCS/ABS control unit harness connector E218 and the

battery

Battery terminals

(Harness connector)

Continuity

BRC

Revision: 2004 April 2002 Q45

BRC-53

Page 54

TROUBLE DIAGNOSIS

Inspection 8 Solenoid, VDC Switching Valve and Circuit EFS000HK

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code Front wheel left ABS inlet solenoid system 46 Front wheel left ABS outlet solenoid system 45 Rear wheel right-hand ABS inlet solenoid system 52 Rear wheel right-hand ABS outlet solenoid system 51 Front wheel right-hand ABS inlet solenoid system 42 Front wheel right-hand ABS outlet solenoid system 41 Rear wheel left ABS inlet solenoid system 56 Rear wheel left ABS outlet solenoid system 55 Primary-side USV 43 Secondary-side USV 44

Primary-side MAV 47 Secondary-side MAV 48

Are self-diagnosis result items above indicated?

>> GO TO 2.

SFIA0587E

2. SELF-DIAGNOSIS RESULT CHECK 2

1. Disconnect VDC/TCS/ABS control unit connector and solenoid connector. Securely connect them again.

2. Securely connect the connectors. Perform the self-diagnosis again. Are self-diagnosis item displays indicated?

YES >> GO TO 3. NO >> Repair or replace the poorly connected connector.

Revision: 2004 April 2002 Q45

BRC-54

Page 55

TROUBLE DIAGNOSIS

3. SOLENOID INPUT SIGNAL CHECK

1. Disconnect VDC/TCS/ABS control unit connector.

2. Check the r es is t an ce val ue be t wee n V DC /TC S/ ABS control unit harness connector E218 and body ground.

VDC/TCS/ABS control unit

(Harness connector E218)

26 (W/G) – 6.0 – 11 Ω

5 (G/Y) – 6.0 – 11 Ω 6 (L/W) – 6.0 – 11 Ω

53 (P) – 6.0 – 11 Ω

55 (R/Y) – 3.0 – 5.0 Ω

3 (Y/G) – 3.0 – 5.0 Ω

4 (BR) – 3.0 – 5.0 Ω

25 (LG) – 3.0 – 5.0 Ω

OK or NG

OK >> Check VDC/TCS/ABS control unit power supply system. NG >> GO TO 4.

Body ground Resistance

SFIA0542E

BRC

Revision: 2004 April 2002 Q45

BRC-55

Page 56

TROUBLE DIAGNOSIS

4. SOLENOID PATH CHECK

1. Disconnect the connectors for VDC/TCS/ABS control unit and VDC actuator.

2. Check for continuity between VDC/TCS/ABS control unit harness connector E218 and VDC actuator harness connector E22.

SFIA0543E

VDC/TCS/ABS control unit

(Harness connector E218)

26 (W/G) 3 (W/G) Yes

5 (G/Y) 1 (G/Y) Yes 6 (L/W) 7 (L/W) Yes

53 (P) 5 (P) Yes

55 (R/Y) 15 (R/Y) Yes

3 (Y/G) 14 (Y/G) Yes

4 (BR) 17 (BR) Yes

25 (LG) 16 (LG) Yes

VDC Actuator

(Harness connector E22)

OK or NG

OK >> Harness disconnection between VDC/TCS/ABS control unit and VDC actuator NG >> GO TO 5.

Continuity

Revision: 2004 April 2002 Q45

BRC-56

Page 57

TROUBLE DIAGNOSIS

5. ACTUA TION SOLENOID INSPECTION

1. Disconne ct VDC actuator connector E22 and E23.

2. Check the resistance value at VDC actuator solenoid.

VDC Actuator

(actuator side connector E22)

3 (W/G) 19 (L/R) 6.0 – 11 Ω

1 (G/Y) 19 (L/R) 6.0 – 11 Ω

7 (L/W) 19 (L/R) 6.0 – 11 Ω

5 (P) 19 (L/R) 6.0 – 11 Ω 15 (R/Y) 19 (L/R) 3.0 – 5.0 Ω 14 (Y/G) 19 (L/R) 3.0 – 5.0 Ω

17 (BR) 19 (L/R) 3.0 – 5.0 Ω

16 (LG) 19 (L/R) 3.0 – 5.0 Ω

(actuator side connector E23)

VDC Actuator

Resistance

OK or NG

OK >> Perform VDC/TCS/ABS control unit self-diagnosis again. NG >> Replace VD C actuator assembly.

Inspection 9 Actuator Motor, Motor Relay, and Circuit EFS000HL

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK 1

SFIA0544E

BRC

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Pump motor, motor relay system 61

“pump motor” and ”motor relay system” indicated in the self-diagnosis display item?

Are

>> GO TO 2.

2. SELF-DIAGNOSIS RESULT CHECK 2

1. Disconnect the connectors for VDC/TCS/ABS control unit and actuator. Securely connect them again.

2. Securely connect the connectors. Perform the self-diagnosis again. Are self-diagnosis item displays indicated?

YES >> GO TO 3. NO >> Repair or replace the poorly connected connector.

Revision: 2004 April 2002 Q45

BRC-57

Page 58

TROUBLE DIAGNOSIS

3. ABS MOTOR, MOTOR RELAY POWER SUPPLY SYSTEM INSPECTION

1. Disconnect VDC relay box connector.

2. Check the voltage between VDC relay box harness connector E57 and body ground.

SFIA0546E

VDC relay box

(Harness connector E57)

10 (W/L) – Battery voltage (approx. 12V)

Body ground Voltage value

OK or NG

OK >> GO TO 4. NG >>

● Check fuses 50A.

● Check for continuity between battery and VDC relay box terminal No. 10 (W/L).

4. ABS MOTOR AND MOTOR RELAY CIRCUIT CHECK

1. Disconnect the connectors for the VD C/TCS/ABS control unit and the VDC relay box.

2. Check for continuity between VDC/TCS/ABS control unit harness connector E218, the VDC relay box, and VDC actuator harness connector E23.

SFIA0547E

VDC/TCS/ABS control unit (Harness connector E218)

20 (R/B) 4 (R/B) – Yes

7 (G/W) 8 (G/W) – Yes

– 15 (G) 21 (G) Yes

VDC relay box

(Harness connector E55,E56)

VDC actuator

(Harness connector E23)

Continuity

OK or NG

OK >> GO TO 5. NG >> Harness malfunction between VDC/TCS/ABS control unit, VDC rela y box, and VDC actuat or.

5. MOTOR RELAY UNIT INSPECTION

Check motor relay as a unit. OK or NG

OK >> Check VDC/TCS/ABS control unit po wer supply circ uit. Refer to No . 3 in BRC-57, "In spection 9

Actuator Motor, Motor Relay, and Circuit"

NG >> Replace motor relay.

Revision: 2004 April 2002 Q45

BRC-58

Page 59

TROUBLE DIAGNOSIS

Inspection 10 Actuator Relay and Route EFS000HM

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble

Actuator relay circuit 63

“actuator relay circuit” indicated in the self-diagnosis display?

>> GO TO 2.

2. SELF-DIAGNOSIS RESULT CHECK 2

1. Disconne ct VDC/TCS/ABS control unit connector. Securely c onnect them again.

2. Perform VDC/TCS/ABS control unit self-diagnos is. Are self-diagnosis item displays indicated?

YES >> GO TO 3. NO >> Repair or replace the poorly connected connector.

3. VDC/TCS/ABS CONTROL UNIT GROUND CIRCUIT INSPECTION

BRC

1. Disconnect VDC/TCS/ABS control unit connector.

2. Check for continuity between the VDC/TCS/ABS control unit harness connector E218 and body ground.

VDC/TCS/ABS control unit

(harness connector E218)

27 (B) – Yes 28 (B) – Yes 29 (B) – Yes 33 (B) – Yes

OK or NG

OK >> GO TO 4. NG >> Poorly connection on VDC/TCS/ABS control unit connector or harness disconnection

Body ground Continuity

SFIA0548E

Revision: 2004 April 2002 Q45

BRC-59

Page 60

TROUBLE DIAGNOSIS

4. ACTUATOR (SOLENOID VALVE) RELAY POWER SUPPLY SYSTEM INSPECTION

1. Disconnect VDC relay box connector.

2. Check the voltage between VDC relay box harness connector E57 and body ground.

SFIA0549E

VDC relay box

(Harness connector E57)

9 (L/Y) – Battery voltage (approx.12V)

Body ground Voltage value

OK or NG

OK >> GO TO 5. NG >>

● Check fuses 30A.

● Check for continuity between battery and VDC relay box terminal No. 10. If it is not OK, replace

the fuse or harness.

5. ACTUATOR (SOLENOID VALVE) RELAY POWER PATH CHECK

1. Disconnect the connectors for VDC/TCS/ABS control unit and VDC relay box.

2. Check for continuity between VDC/TCS/ABS control unit harness connector E218 and VDC relay box E56.

SFIA0550E

VDC/TCS/ABS control unit

(Harness connector E128)

2 (SB) 5 (SB) Yes

36 (GY/R) 7 (GY/R) Yes

VDC relay box

(Harness connector E56)

Continuity

OK or NG

OK >> GO TO 6. NG >> Harness disconnection between VDC/TCS/ABS control unit and VDC relay box

6. ACTUATOR (SOLENOID VALVE) RELAY UNIT INSPECTION

Check actuator (solenoid valve) relay as a unit. OK or NG

OK >> Check VDC/TCS/ABS control unit power supply circuit. Refer to No.3 in BRC-57, "Inspection 9

Actuator Motor, Motor Relay, and Circuit"

NG >> Replace actuator relay.

Revision: 2004 April 2002 Q45

BRC-60

Page 61

TROUBLE DIAGNOSIS

Inspection 11 Stop Lamp Switch and Path EFS000HN

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Stop lamp switch system 15

“stop lamp switch system” indicated in the self-diagnosis item display?

>> GO TO 2.

2. STOP LAMP INSPECTION

1. Disconnect the co nn ec to rs for st op lamp switch and VDC/TCS/ABS control unit.

2. Securely connect them again.

3. Start the engine.

4. Repeat depressing the brake pedal carefully several times, then perform the self-diagnosis again. Are self-diagnosis item displays indicated?

YES >> GO TO 3. NO >> Repair or replace the poorly connected connector.

3. STOP LAMP SWITCH PATH CHECK

1. Disconnect the co nn ec to rs for st op lamp switch and VDC/TCS/ABS control unit.

2. Check for contin uit y betwe en sto p la mp swi tch harne ss co nnec tor M402 and VDC/TCS/ABS control unit harness connector E218.

SFIA0578E

BRC

SFIA0551E

VDC/TCS/ABS control unit

(Harness connector E218)

48 (R/W) 2 (R/W) Yes

OK or NG

OK >> Perform the VDC/TCS/ABS control unit self-diagnosis again. NG >> Harness disconnection between the VDC/TCS/ABS control unit and the stop lamp switch

Revision: 2004 April 2002 Q45

STOP LAMP SWITCH

(Harness connector M402)

BRC-61

Continuity

Page 62

TROUBLE DIAGNOSIS

Inspection 12 VDC/TCS/ABS Control Unit Power Supply Circuit EFS000HO

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Low battery voltage 57

“battery voltage low” indicated in the self-diagn osis item display?

>> GO TO 2.

2. INSPECTION START

1. Disconnect VDC/TCS/ABS control unit connector. Securely connect them again.

2. Perform the self-diagnosis. Are self-diagnosis item displays indicated?

YES >> GO TO 3. NO >> Repair or replace the poorly connected connector.

3. VDC/TCS/ABS CONTROL UNIT POWER SUPPLY SYSTEM INSPECTION 1

1. Disconnect VDC/TCS/ABS control unit connector.

2. Turn the ignition switch ON (engine not running), and check the voltage between VDC/TCS/ABS control unit harness connector E218 and body g round.

VDC/TCS/ABS control unit

(Harness connector E218)

1 (GY) – Battery voltage (approx.12V)

OK or NG

OK >> GO TO 4 . NG >> GO TO 5 .

Body ground Voltage value

SFIA0552E

Revision: 2004 April 2002 Q45

BRC-62

Page 63

TROUBLE DIAGNOSIS

4. VDC/TCS/ABS CONTROL UNIT GROUND CIRCUIT INSPECTION

1. Disconnect VDC/TCS/ABS control unit connector.

2. Check for continuity between VDC/TCS/ABS control unit harness connector E218 and body ground.

VDC/TCS/ABS control unit

(Harness connector E218)

27 (B) – Yes 28 (B) – Yes 29 (B) – Yes 33 (B) – Yes

OK or NG

OK >> Perform VDC/TCS/ABS control unit self-diagnosis again. NG >> Harness disconnection or improper installation of VDC/TCS/ABS control unit

Body ground Continuity

SFIA0548E

BRC

5. VDC/TCS/ABS CONTROL UNIT POWER SUPPLY SYSTEM INSPECTION 2

1. Check fuses 10A.

2. Remove th e negative and po sitive terminals from battery terminal.

3. Check for continuity between battery positive terminal and VDC/ TCS/ABS control unit harness connector E218.

VDC/TCS/ABS control unit

(Harness connector E218)

1 (GY) – Yes

OK or NG

OK >> Check battery for a loose terminal and low vol tage or the alt ernator for abnormality. NG >>

● Replace fuse 10A.

● Harness disconnection

Battery positive terminal Continuity

SFIA0553E

Revision: 2004 April 2002 Q45

BRC-63

Page 64

TROUBLE DIAGNOSIS

Inspection 13 If “Shift Position Error” is Indicated in the Self-Diagnosis Item Display

Inspection procedure

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Shift position malfunction 97

“shift position error” is indicated in the self-diagnosis item display?

>> GO TO 2.

2. DATA MONITOR CHECK

1. Connect CONSULT-II and start the engine.

2. Select “item menu” in data monitor. Check the P position signal.

Selector lever position P pos iti on signal (da ta monitor )

P position ON

Not P position OFF

OK or NG

OK >> Perform VDC/TCS/ABS control unit self-diagn os is aga in. NG >> GO TO 3.

EFS000HP

3. A/T INHIBITOR SWITCH INSPECTION

Perform the A/T inhibitor sw itch inspection. AT-209, " Are self-diagnosis item displays indicated?

YES >> Perform VDC/TCS/ABS control unit self-diagn os is aga in. NO >> After repairing the applicable items, perform VDC/TC S/ABS control unit self-diagnosis.

Inspection 14 When “Emergency Brake” is Displayed in the Self-Diagnosis Item Display

Inspection procedure

PARK/NEUTRAL POSITION (PNP) SWITCH"

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Emergency brake 79

When any items other than “emergency brake” is displayed in the self-diagnosis item display (note), follow the instructions below.

CAUTION:

″Emergency brake″ is indicated when the co ntrol unit itself is detected internal error. If this display item was indicated, replace the control unit.

“Emergency brake” is indicated in the self-diagnosis item display?

>> Replace VDC/TCS/ABS control unit, and perform the self-diagnosis again.

EFS000HQ

Revision: 2004 April 2002 Q45

BRC-64

Page 65

TROUBLE DIAGNOSIS

Inspection 15 When “Steering Wheel Angle Sensor has not been Corrected” is Indicated in the Self-Diagnosis Display

Inspection procedure

EFS000HR

1. SELF-DIAGNOSIS RESULT CHECK 1

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Steering wheel angle sensor has not been corrected. 99

When any item other than nosis item display:

YES >> Check and repair the applicable item. Perform the self-diagnosis. NO >> Perform steering wheel angle sensor neutral position adjustment. GO TO 2.

“steering wheel angl e sensor ha s not been co rrected ” is displa yed in the se lf-diag-

2. SELF-DIAGNOSIS RESULT CHECK 2

1. Tu rn the ig nit ion swi tch OFF, and ON to erase the self-diag nosi s resul t s. And perf orm VDC/TCS /ABS control unit self-diagnosis again.

Is the self-diagnosis result displayed?

YES >> After replacing th e steering wheel angle sensor, perform the neutral position adju stment. Then

conduct the self-diagnosis again.

NO >> Inspection End

Inspection 16 Communication Circuit between Brake Fluid Level of Reservoir Tank, VDC/TCS/ABS Control Unit and Brake Fluid Level Switch

Inspection procedure

EFS000HS

1. SELF-DIAGNOSIS RESULT CHECK 1

BRC

Check the self-diagnosis results.

Self-diagnosis results

CONSULT-II indication item Diagnostic trouble code

Low fluid level 67

Does the brake warning light turn on?

YES >> Check the pad for wear. Check the brake fluid for leakage. NO >> GO TO 2.

2. SELF-DIAGNOSIS RESULT CHECK 2

1. Disconnect the connectors for the fluid level switch and the VDC/TCS/ABS control unit.

2. Securel y connect the connectors. Perform the VDC/TCS/ABS control unit self- diagnosis.

Is the self-diagnosis result displayed?

YES >> Poor connection of connector. Repair or replace the poorly connected connector. NO >> GO TO 3.

SFIA0230E

Revision: 2004 April 2002 Q45

BRC-65

Page 66

TROUBLE DIAGNOSIS

3. CIRCUIT CHECK BETWEEN THE BRAKE FLUID LEVEL SWITCH AND THE VDC/TCS/ABS CON-

TROL UNIT

1. Disconnect the connectors for brake fluid level switch and VDC/TCS/ABS control unit.

2. Check for continuity between bra ke fluid level switch ha rness connector E73 and VDC/TCS/ABS control unit harness connector E2 18.

SFIA0554E

VDC/TCS/ABS control unit

(Harness connector E218)

40 (Y/G) 5 (Y/G) Yes

Fluid level switch

(Harness connector E73)

Continuity

OK or NG

OK >> Perform VDC/TCS/ABS control unit self-diagn os is aga in. NG >> Repair or replace the disconnected harness.

Component Check EFS000HT

VDC OFF SWITCH

● Disconnect VDC switch connector M13. Check for continuity

between the terminal No. 1 and No. 2.

1 - 2 : Pressing the switch will make a continu-

ity, and releasing it will stop the continuity.

VDC RELAY BOX

Disconnect VDC rel ay b ox c on ne c tors E55, E56 and E5 7. Check for continuity, resistance value, and in sulation between any pair of terminals in VDC relay box.

SFIA0555E

SFIA0580E

Revision: 2004 April 2002 Q45

BRC-66

Page 67

TROUBLE DIAGNOSIS

Continuity and Resistance

SFIA0582E

VDC ACTUATOR

Disconnect VDC actuator connectors E21, E22 and E23. Check for continuity, resistance value between any pair of terminals in VDC actuator.

CAUTION:

Confirm that the earth of actuator motor is completely removed

BRC

SFIA0581E

Revision: 2004 April 2002 Q45

BRC-67

Page 68

Continuity and Resistance

TROUBLE DIAGNOSIS

Check The Resistance

Standard value (Ω)

Solenoid valves

VDC switch-over solenoid valve

Outlet - Outlet : 6.0 - 10.0 Outlet - Inlet : 9.0 - 16.0 Inlet - Inlet : 12.0 - 22.0

Primary-side 1 - Secondary-side 1 : 12.0 - 22.0 Primary-side 2 - Secondary-side 2 : 6.0 - 10.0 Primary-side 1 - Primary-side 2, Secondary-side 2 : 9.0 - 16.0 Secondary-side 1 - Primary-side 2, Secondary-side 2 : 9.0 - 16.0

SFIA0583E

Revision: 2004 April 2002 Q45

BRC-68

Page 69

TROUBLE DIAGNOSIS

Actuator Operation Check

1. Connect E55 terminals of actuator to 15 (G) and 16 (L/R) terminals of relay box.

2. Measure th e moto r volt ag e [No. 4 (R/B) t ermi nal to body gro und] with oscilloscope. Then check the motor reverse volt-age occasioned time. The motor reverse voltage occasioned time is more than 0.1 sec.

3. CAUTION:

● Pe rform checking of motor relay unit. The n confirm that

relay functions.

● Driving actuator motor is within 4 sec. To prevent heating

up.

● Standard condition of the motor reverse voltage occa-

sioned time is: Battery voltage is 12 V. Temperature 20°. when the battery voltage or temperature is lower than the standard, the motor reverse voltage occasioned time becomes slightly shorter.

BRC

Symptom 1: ABS Works Frequently. EFS000HU

Inspection procedure

1. INSPECTION START

Check the wheel sensor system.

● Sensor mount ing inspection

● Sensor pick-up inspection for iron chips

● Sensor rotor inspection (e .g. number of teeth, damaged teeth)

● Sensor connector engagement inspection

OK or NG

OK >> GO TO 2. NG >> Wheel sensor and rotor lines repair

2. LOOSENESS INSPECTION

Check the front and rear axle for looseness. OK or NG

OK >> BRC-69, "Symptom 2: Unexpected Pedal Action" NG >> Axle insp ection and repair

Symptom 2: Unexpected Pedal Action EFS000HV

SFIA0585E

Inspection procedure

1. BRAKE PEDAL STROKE INSPECTION

Check the brake pedal stroke. Is stroke excessively long?

YES >> Check the bleed in g an d br ak e sy s tem . NO >> GO TO 2.

Revision: 2004 April 2002 Q45

BRC-69

Page 70

TROUBLE DIAGNOSIS

2. PEDAL FORCE INSPECTION

Check that the brake is effective with the pedal depressed. Is the pedal heavy, but effective?

YES >> Normal NO >> GO TO 3.

3. CONNECTOR AND PERFORMANCE INSPECTION

Disconnect actuator relay unit connector to deactivate the ABS function. Check that the brake is effective. Is the brake effective?

YES >> GO TO 4. NO >> Brake line inspection

4. ABS WARNING LAMP INDICATOR INSPECTION

Check ABS warning lamp illuminates. OK or NG

OK >> Perform the self-diagnosis. NG >> GO TO 5.

5. WHEEL SENSOR INSPECTION

Check wheel sensor system.

● Sensor mounting inspection

● Sensor pick-up inspection for iron chips

● Sensor rotor inspection (e.g. number of teeth, damaged teeth)

● Sensor connector engagement inspection

OK or NG

OK >> Normal NG >> Wheel sensor and rotor lines repair

Symptom 3: Longer Stopping Distance EFS000HW

Inspection procedure

1. INSPECTION START

Check stopping distance when braking becomes longer only on a snowy or gravel road. OK or NG

OK >> It may be longer than that of vehicle without ABS. NG >> Proceed to 2.

2. PERFORMANCE CHECK

Disconnect actuator rela y box to de ac tiv a te ABS fun ction . Is the stopping distance still longer?

YES >> ● Brake line air bleeding

● Brake line inspection

NO >> GO TO 2.

3. ABS WARNING LAMP INDICATOR INSPECTION

Check ABS warning lamp illuminates. OK or NG

OK >> Perform the self-diagnosis. NG >> GO TO 4.

Revision: 2004 April 2002 Q45

BRC-70

Page 71

TROUBLE DIAGNOSIS

4. WHEEL SPEED INSPECTION

Check wheel sens or sy s tem .

● Sensor mount ing inspection

● Sensor pick-up inspection for iron chips

● Sensor rotor inspection (e .g. number of teeth, damaged teeth)

● Sensor connector engagement inspection

OK or NG

OK >> Normal NG >> Wheel sensor and rotor lines repair

Symptom 4: ABS Does Not Work. EFS000HX

Inspection procedure

1. ABS WARNING LAMP INDICATOR INSPECTION

Check ABS warning lamp illuminates. OK or NG

OK >> Perform the self-diagnosis. NG >> GO TO 2.

2. WHEEL SENSOR INSPECTION

Check wheel sens or sy s tem .

● Sensor mount ing inspection

● Sensor pick-up inspection for iron chips

● Sensor rotor inspection (e .g. number of teeth, damaged teeth)

● Sensor connector engagement inspection

OK or NG

OK >> Normal NG >> Wheel sensor and rotor lines repair

BRC

Symptom 5: Pedal Vibration and Noise EFS000HY

Inspection procedure

1. SYMPTOM CHECK

Check brake system for pedal vibration or noise at the engine start. OK or NG

OK >> Perform the self-diagnosis. NG >> GO TO 2.

2. SYMPTOM CHECK 2

Check the brake system for pedal vibration or noise when the pedal depressed lightly (just put a foot on).

CAUTION:

Under the following driving conditions, the wheel speed will fluctuates, resulting in ABS activation.

● When shiftin g gears

● High speed corneri ng

● When a gust of wind

OK or NG

OK >> GO TO 3. NG >> Normal

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TROUBLE DIAGNOSIS

3. SYMPTOM CHECK 3

Does symptom appear during normal braking operation?

CAUTION:

ABS may work in following driving conditions even if there is no sudden brake.

● When µ road friction is low.

● High speed cornering

● When a gust of wind

OK or NG

OK >> GO TO 4. NG >> Normal

4. SYMPTOM CHECK 4

Check symptom is reproduce when engine speed is increased with vehicle stopped. OK or NG

OK >> GO TO 5. NG >>

● Normal.

CAUTION:

This symptom may appear with vehicle stopped.

5. SYMPTOM CHECK 5

Check symptom is reproduce when any switch of electrical equipment is operated. OK or NG

OK >> Check that the re are no radio, antenn a, and a ntenna lead-in wires (i ncludin g wiring) near control

unit.

NG >> GO TO 6.

6. ABS WARNING LAMP INDICATOR INSPECTION

Check ABS warning lamp turns on.

OK or NG

OK >> Perform the self-diagnosis. NG >> GO TO 7.

7. WHEEL SENSOR INSPECTION

Check wheel sensor system.

● Sensor mounting inspection

● Sensor pick-up inspection for iron chips (e.g. number of teeth, damaged teeth)

● Sensor connector engagement inspection

● Wheel sensor path harness and connector inspection

OK or NG

OK >> Normal NG >> Wheel sensor and rotor lines repair

Symptom 6: VDC OFF Indicator Lamp Does Not Illuminate EFS000HZ

Inspection procedure

1. VDC OFF INDICATOR LAMP INSPECTION

Disconnect VDC /TCS/ABS control unit connector. Does the ABS warning lamp and VDC OFF indicator lamp illuminate?

YES >> VDC/TCS/ABS contro l uni t mal fun ct io n. R epair or replac e co ntrol unit. NO >> Combination meter system malfunction. Check combination meter.

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TROUBLE DIAGNOSIS

Symptom 7: SLIP Indicator Lamp Does Not Illuminate EFS000I0

Inspection procedure

1. SLIP INDICATOR LAMP BURNED-OUT BULB INSPECTION

Check for con tinuity betwe en power supply terminal of met e r and terminal of ABS warning l amp. OK or NG

OK >> GO TO 2. NG >> Circuit malfunction in SLIP indicator lamp or combination meter

2. SLIP INDICATOR LAMP POWER PATH INSPECTION

Disconnect mete r connector. Check voltage between the vehicle-side harn ess terminal and body ground is battery voltage (approx. 12V).

OK or NG

OK >> GO TO 3. NG >>

● Fuse inspection

● Inspection for harness and connectors between fuse block and meter

● Check power supply system (battery and ignition switch circuit).

BRC

3. SLIP INDICATOR LAMP PATH HARNESS INSPECTION

1. Disconnect the conn ec to rs for VD C /TCS/ABS control unit and me te r vehi cl e-s id e ha rne ss .

2. Check the harness between the meter and VDC/TCS/ABS control unit for an open/shorted circuit.

OK or NG

OK >> GO TO 4. NG >> Repair or replace the disconnected harness.

4. SLIP INDICATOR LAMP PATH CONNECTOR INSPECTION

Check the connectors for VDC/TCS/ABS control unit and meter vehicle-side harness. OK or NG

OK >> Connect connectors, and perform the self-diagnosis. The vehicle harness has the intermediate

NG >> Repair or replace the disconnected connector.

connector. Refer to the vehicle wiring diagram, always check it.

Symptom 8: During VDC/TCS/ABS Control, Vehicle Behavior is Jerky. EFS000I1

Inspection procedure

1. ENGINE SPEED SIGNAL INSPECTION

Perform “data monitor” with CONSULT-II for VDC/TCS/ABS control unit. Is engine speed at idle 400 rpm or higher?

YES >> Normal NO >> GO TO 2.

2. SELF-DIAGNOSIS RESULT ITEM CHECK 1

Perform VDC/TCS/ABS control unit self-diagnosis. Is self-diagnosis result displayed?

YES >> After checking and repairing applicable item, perform VDC/TCS/ABS control unit self-diagnosis

again.

NO >> GO TO 3.

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TROUBLE DIAGNOSIS

3. ECM SELF-DIAGNOSIS RESULT ITEM CHECK

Perform ECM self-diagnosis . Does self-dia gnosis result indicate

YES >> Repair or replace camshaft position sensor system. NO >> GO TO 4.

“camshaft position sensor”?

4. SELF-DIAGNOSIS RESULT ITEM CHECK 2

Disconnect the connectors for VDC/TCS/ABS control unit and ECM, and reconnect them correctly to perform self-diagnosis again.

OK or NG

OK >> Connector malfunction. Repair or replace the connector. NG >> GO TO 5.

5. SELF-DIAGNOSIS RESULT ITEM CHECK 3

Perform the A/T self-diagnosis. OK or NG

OK >> GO TO 6. NG >> Repair or replace the applicable part.

6. SELF-DIAGNOSIS RESULT ITEM CHECK 4

Perform VDC/ TCS/ABS control unit self-diagnosis again. Is self-diagnosis resu lt dis p lay e d?

YES >> Repair or replace the applicable item. NO >> GO TO 7.

7. CIRCUIT CHECK BETWEEN VDC/TCS/ABS CONTROL UNIT AND ECM

1. Disconnect the connectors for VDC/TCS/ABS control unit and ECM.

2. Check engine speed sign al harne ss betwee n VDC/TCS/AB S c ontrol unit and ECM for an open/sh orted

circuit.

3. Check the connectors for VDC/TCS /ABS control unit and ECM. OK or NG

OK >> Inspection end NG >> Connect the connectors to perform VDC/TCS/ABS control unit self-diagnosis again.

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BRC-74

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WHEEL SENSORS

WHEEL SENSORS PFP :47910

Removal and Installation EFS001XG

BRC

PFIA0014E

REMOVAL

Be careful of the following.

CAUTION:

When removing the sens or, do not rotate it, if possible, and also do not forcibly pul l the sensor harness.

INSTALLATION

Be careful of the following. Tighten the mounting bolts and nuts to the specified torque.

● When installing, check that there is no foreign material such as iron chips on the pick-up and mounting

hole of the sensor, and check that no foreign material has been caught in the sensor rotor motor. Remove any foreign material to clean the mount.

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VDC/TCS/ABS CONTROL UNIT

VDC/TCS/ABS CONTROL UNIT PFP:47660 Removal and Installation EFS000I5

1. Removal and instal lation of lower instrument panel.

2. Removal and instal lation of glove box.

3. Removal and installation of passenger-side lower instrument panel.

4. Removal and instal lation of ECM.

SGIA0044E

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SENSOR ROTOR

SENSOR ROTOR PFP:47970

Removal and Installation EFS000I6

REMOVAL Front

Refer to FAX-4, "REMOVAL" in “FAX” section.

Rear

● Remove the rear sensor rotor in following procedure.

– Remove the side flange. Refer to RFD-7, "SIDE OIL SEAL" in “RFD” section. – Using a bearing replacer (special servic e tool) and puller ( commercial service too l), remove the sensor

rotor from the companion flange.

INSTALLATION Front

Refer toFAX-5, "INSTALLATION" in “FAX” section.

Rear

● Install the rear sensor rotor in following procedure.

– Using a drift (spec ial service tool), press the rear sens or rotor

into the side flange.

– Install the side flange.

Number of sensor rotor teeth Front : 46 Rear : 46

BRG1210D

BRC

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VDC/TCS/ABS ACTUATOR

VDC/TCS/ABS ACTUATOR PFP:47660 Removal and Installation EFS000I7

SFIA0579E

Be careful of the following.

CAUTION:

● Before servicing, disconnect the battery terminals.

● To remove the brake tube, use a flare nut wrench to prevent the flare nuts and brake tube from

being damaged. To install, use a brake tube torque wrench.

● Do not remove and install the actuator by holding the harness.

● After completing the work, bleed the precharge pump assembly and the brake piping. Refer to BR-

9, "Refilling and Bleeding" .

● Make sure to connect the gr ound terminal securely.

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PRECHARGE PUMP ASSEMBLY

PRECHARGE PUMP ASSEMBLY PFP:47810

Removal and Installation EFS000I8

BRC

SFIA0148E

REMOVAL

During removal, be careful of the following.

● When removing and ins tallin g the pre-c ha r ge pum p, do not ap ply exce ss iv e forc e to the harn es s .

INSTALLATION

During removal, be careful of the following. Tighten mounting bolts and nuts to the specified torque.

● After the work, blee d ai r fro m th e p r e-c ha rge pu mp as se m bly an d th e b r ak e p ip ing . Refer to BR-9, "Refill-

ing and Bleedi ng" .

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G SENSOR

G SENSOR PFP:47930 Removal and Installation EFS000I9

REMOVAL

1. Remove the console box.

2. Disconnect the harnes s connector.

3. Remove the mounting bolts, and remove the Yaw rate and side G-sensor.

CAUTION:

Do not drop or strike the Yaw rate and side G-sensor, because it has little endurance against impact.

PFIA0017E

INSTALLATION

Install in the reverse order of removal.

CAUTION:

Do not drop or strike the Yaw rate and side G-sensor, because it has little endurance against impact.

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VDC/TCS/ABS RELAY BOX

VDC/TCS/ABS RELAY BOX PFP:47605

Removal and Installation EFS000OA

Show in the figure.

SFIA0558E

BRC

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BRC-81

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VDC/TCS/ABS RELAY BOX

Revision: 2004 April 2002 Q45

BRC-82

Infiniti Q45 F50 (2002) Service Manual – Brake Control System

Specifications and Main Features

Frequently Asked Questions

User Manual

PRECAUTIONS

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

Precautions for Brake System EFS000GV

Precautions for Brake Control EFS000GW

Precautions for Trouble Diagnosis EFS001OW

CAN SYSTEM

Precautions for Harness Repair EFS001OX

CAN SYSTEM

ON-VEHICLE SERVICE

Adjustment of Neutral Position of Steering Angle Sensor EFS000GY

GENERAL INFORMATION

GENERAL INFORMATION PFP:00000 Fail-Safe EFS000GZ

ABS SYSTEM

VDC/TCS SYSTEM

Hydraulic Circuit EFS000H0

ABS Functions EFS000H1

TCS Functions EFS000H2

VDC Functions EFS000H3

System Diagram EFS000H4

CAN Communication EFS000NY

SYSTEM DESCRIPTION

Input/output signal chart

Input/output signal chart

TROUBLE DIAGNOSIS

How to Perform Trouble Diagnoses for Quick and Accurate Repair EFS000H5

INTRODUCTION

WORK FLOW

ASKING COMPLAINTS

EXAMPLE OF DIAGNOSIS SHEET

Component Parts and Harness Connector Loca tion EFS000H6

Schematic EFS000H7

Wiring Diagra m - V DC - EFS001OY

Control Unit Input/Output Si gn al Standard EFS000H8

STANDARDS USING A CIRCUIT TESTER AND OSCILLOSCOPE

STANDARDS WITH CONSULT-II

Functions of CONSULT-II EFS000H9

CONSULT-II MAIN FUNCTION

DATA MONITOR

Operation Procedure

Display Item List

Procedure

Self-Diagnostic Items to Result Mode

Solenoi d Valve

Solenoid Valve Operation Chart

ABS Motor

Precharge Pump

SLIP LED

ABS Warning Lamp

ASCD Output

Refer to “For Correct and Quick Diagnosis”. EFS000HA

PRECAUTIONS FOR TROUBLE DIAGNOSIS

Basic Inspection EFS000HB

PRELIMINARY CHECK 1: (BRAKE FLUID LEVEL AND LEAK INSPECTION)

PRELIMINARY 2: (INSPECTION FOR LOOSE POWER SUPPLY TERMINAL)

PRELIMINARY 3: (INSPECTION FOR ABS WARNING LAMP, VDC OFF INDICATOR LAMP, AND SLIP INDICATOR LAMP)

Self-Diagnoses EFS000HC

FUNCTION

PROCEDURE

HOW TO READ SELF-DIAGNOSIS RESULTS (MALFUNCTION)

HOW TO ERASE SELF-DIAGNOSIS RESULTS (MALFUNCTION)

INDICATION ITEM

Inspection 1 CAN Communication Line or VDC/TCS/ABS Control Unit and Steering Angle Sensor System

Inspection 2 Engine System EFS000HE

Inspection 3 VDC/TCS/ABS Control Unit System EFS000HF

Inspection 4 Pressure Sensor and the Circuit between Pressure Sensor and VDC/TCS/ABS Control Unit

Inspection 7 Precharging Pump Motor and Circuit EFS000HJ

Inspection 8 Solenoid, VDC Switching Valve and Circuit EFS000HK

Inspection 9 Actuator Motor, Motor Relay, and Circuit EFS000HL

Inspection 10 Actuator Relay and Route EFS000HM

Inspection 11 Stop Lamp Switch and Path EFS000HN

Inspection 12 VDC/TCS/ABS Control Unit Power Supply Circuit EFS000HO

Inspection 13 If “Shift Position Error” is Indicated in the Self-Diagnosis Item Display

Inspection 14 When “Emergency Brake” is Displayed in the Self-Diagnosis Item Display

Component Check EFS000HT

VDC RELAY BOX

Continuity and Resistance