Infiniti QX56 (JA60). Manual - part 124

INSPECTION AND ADJUSTMENT

BRC-9

< BASIC INSPECTION >

[VDC/TCS/ABS]

C

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G

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BRC

N

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>> GO TO 2

2.

PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR

1. On the CONSULT-III screen, touch “WORK SUPPORT” and “ST ANG SEN ADJUSTMENT” in order.

2. Touch “START”.

CAUTION:

Do not touch steering wheel while adjusting steering angle sensor.

3. After approximately 10 seconds, touch “END”.

NOTE:

After approximately 60 seconds, it ends automatically.

4. Turn ignition switch OFF, then turn it ON again.

CAUTION:

Be sure to perform above operation.

>> GO TO 3

3.

CHECK DATA MONITOR

1. Run vehicle with front wheels in straight-ahead position, then stop.

2. Select “DATA MONITOR”. Then make sure “STR ANGLE SIG” is within 0

±2.5°.

Is the steering angle within the specified range?

YES

>> GO TO 4

NO

>> Perform the neutral position adjustment for the steering angle sensor again, GO TO 1

4.

ERASE THE SELF-DIAGNOSIS MEMORY

Erase the self-diagnosis memory of the ABS actuator and electric unit (control unit) and ECM.

• ABS actuator and electric unit (control unit): Refer to 

BRC-23, "CONSULT-III Function (ABS)"

.

• ECM: Refer to 

EC-63, "CONSULT-III Function (ENGINE)"

.

Are the memories erased?

YES

>> Inspection End

NO

>> Check the items indicated by the self-diagnosis.

CALIBRATION OF DECEL G SENSOR
CALIBRATION OF DECEL G SENSOR : Description

INFOID:0000000005147944

Refer to the table below to determine if calibration of the decel G sensor is required.

×: Required –: Not required

CALIBRATION OF DECEL G SENSOR : Special Repair Requirement

INFOID:0000000005147945

CALIBRATION OF DECEL G SENSOR

CAUTION:

To calibrate the decel G sensor, make sure to use CONSULT-III

Situation

Calibration of decel G sensor

Removing/Installing ABS actuator and electric unit (control unit)

—

Replacing ABS actuator and electric unit (control unit)

×

Removing/Installing steering angle sensor

×

Replacing steering angle sensor

×

Removing/Installing steering components

×

Replacing steering components

×

Removing/Installing suspension components

×

Replacing suspension components

×

Change tires to new ones

—

Tire rotation

—

Adjusting wheel alignment

×

BRC-10

< BASIC INSPECTION >

[VDC/TCS/ABS]

INSPECTION AND ADJUSTMENT

(Calibration cannot be done without CONSULT-III)

1.

ALIGN THE VEHICLE STATUS

Stop vehicle with front wheels in straight-ahead position.

>> GO TO 2

2.

PERFORM CALIBRATION OF DECEL G SENSOR

1. On the CONSULT-III screen, touch “WORK SUPPORT” and “DECEL G SEN CALIBRATION” in order.

2. Touch “START”.

3. After approximately 10 seconds, touch “END”.

NOTE:

After approximately 60 seconds, it ends automatically.

4. Turn ignition switch OFF, then turn it ON again.

CAUTION:

Be sure to perform above operation.

>> GO TO 3

3.

CHECK DATA MONITOR

1. Run vehicle with front wheels in straight-ahead position, then stop.

2. Select “DATA MONITOR”. Then make sure “DECEL G SEN” is within 

± 0.08G.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Perform calibration of decel G sensor again, GO TO 1

4.

ERASE THE SELF-DIAGNOSIS MEMORY

Erase the self-diagnosis memory of the ABS actuator and electric unit (control unit) and ECM.

• ABS actuator and electric unit (control unit): Refer to 

BRC-23, "CONSULT-III Function (ABS)"

.

• ECM: Refer to 

EC-63, "CONSULT-III Function (ENGINE)"

.

Are the memories erased?

YES

>> Inspection End

NO

>> Check the items indicated by the self-diagnosis.

VDC

BRC-11

< FUNCTION DIAGNOSIS >

[VDC/TCS/ABS]

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BRC

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FUNCTION DIAGNOSIS

VDC

System Diagram

INFOID:0000000005147946

System Description

INFOID:0000000005147947

• Vehicle Dynamics Control system detects driver

′s steering operation amount and brake pedal travel from

steering angle sensor and pressure sensors. Using information from yaw rate/side/decel G sensor and

wheel sensor, VDC judges driving condition (conditions of under steer and over steer) to improve vehicle

driving stability by controlling brake application to 4 wheels and engine output.

• During VDC operation, it informs driver of system operation by flashing SLIP indicator lamp.

• Electrical system diagnosis by CONSULT-III is available.

AWFIA0065GB

BRC-12

< FUNCTION DIAGNOSIS >

[VDC/TCS/ABS]

VDC

Component Parts Location

INFOID:0000000005147948

1.

Front wheel sensor LH E18
Front wheel sensor RH E117

2.

ABS actuator and electric unit (con-
trol unit) E125

3.

Combination meter M23, M24

4.

Rear wheel sensor LH C11
Rear wheel sensor RH C10

5.

Yaw rate/side/decel G sensor M108 6.

Steering angle sensor M17

AWFIA0572GB