2004 INFINITI QX56 Factory Service Manual

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Page 1073 of 3371

INFINITI QX56 2004 Factory Service Manual BRC-60
[VDC/TCS/ABS]
TROUBLE DIAGNOSES FOR SYMPTOMS
Revision: August 20072004 QX56
ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned OnEFS0044Y
1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (

Page 1074 of 3371

INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSES FOR SYMPTOMS
BRC-61
[VDC/TCS/ABS]
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Revision: August 20072004 QX56
Vehicle Jerks During TCS/VDC ActivationEFS00450
1. ABS ACTUATOR AND ELECTRIC UNIT (CONTROL

Page 1075 of 3371

INFINITI QX56 2004 Factory Service Manual BRC-62
[VDC/TCS/ABS]
ON-VEHICLE SERVICE
Revision: August 20072004 QX56
ON-VEHICLE SERVICEPFP:00000
Adjustment of Steering Angle Sensor Neutral PositionEFS003RM
After removing/installing or replacing A

BRC-62
[VDC/TCS/ABS]
ON-VEHICLE SERVICE
Revision: August 20072004 QX56
ON-VEHICLE SERVICEPFP:00000
Adjustment of Steering Angle Sensor Neutral PositionEFS003RM
After removing/installing or replacing ABS actuator and electric unit (control unit), steering angle sensor, steer-
ing and suspension components which affect wheel alignment or after adjusting wheel alignment, be sure to
adjust neutral position of steering angle sensor before running vehicle.
NOTE:
Adjustment of steering angle sensor neutral position requires CONSULT-II.
1. Stop vehicle with front wheels in straight-ahead position.
2. Connect CONSULT-II to data link connector on vehicle, and turn
ignition switch ON (do not start engine).
3. Touch “ABS”, “WORK SUPPORT” and “ST ANGLE SENSOR
ADJUSTMENT” on CONSULT-II screen in this order.
4. Touch “START”.
CAUTION:
Do not touch steering wheel while adjusting steering angle
sensor.
5. After approximately 10 seconds, touch “END”. (After approxi-
mately 60 seconds, it ends automatically.)
6. Turn ignition switch OFF, then turn it ON again.
7. Run vehicle with front wheels in straight-ahead position, then
stop.
8. Select “DATA MONITOR”, “SELECTION FROM MENU”, and
“STR ANGLE SIG” on CONSULT-II screen. Then check that
“STR ANGLE SIG” is within 0±3.5 deg. If value is more than specification, repeat steps 1 to 5.
9. Erase memory of ABS actuator and electric unit (control unit) and ECM.
10. Turn ignition switch to OFF.
Calibration of Decel G SensorEFS003RN
After removing/installing or replacing ABS actuator and electric unit (control unit), yaw rate/side/decel G sen-
sor, steering and suspension components which affect wheel alignment or after adjusting wheel alignment, be
sure to calibrate the decel G sensor before running vehicle.
NOTE:
Calibration of decel G sensor requires CONSULT-II.
1. Stop vehicle with front wheels in straight-ahead position.
CAUTION:
The work should be done on a level area with an unloaded vehicle.
Keep all the tires inflated to the correct pressures. Adjust the tire pressure to the specified pres-
sure value.
2. Connect CONSULT-II with CONSULT-II CONVERTER to data link connector on vehicle, and turn ignition
switch ON (do not start engine).
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
3. Touch "ABS", "WORK SUPPORT" and "DECEL G SEN CALIBRATION" on CONSULT-II screen in this
order. Refer to BRC-28, "
CONSULT-II BASIC OPERATION PROCEDURE" .
BBIA0369E
WFIA0239E

Page 1076 of 3371

INFINITI QX56 2004 Factory Service Manual ON-VEHICLE SERVICE
BRC-63
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Revision: August 20072004 QX56
4. Touch "START".
CAUTION:
Set vehicle as shown in the display.
5. After approximately 10 seconds, tou

Page 1077 of 3371

INFINITI QX56 2004 Factory Service Manual BRC-64
[VDC/TCS/ABS]
WHEEL SENSORS
Revision: August 20072004 QX56
WHEEL SENSORSPFP:47910
Removal and InstallationEFS003RO
REMOVAL
1. Remove wheel sensor mounting screw.
When removing the front wheel

Page 1078 of 3371

INFINITI QX56 2004 Factory Service Manual SENSOR ROTOR
BRC-65
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Revision: August 20072004 QX56
SENSOR ROTORPFP:47970
Removal and Installation EF S0 03 RP
NOTE:
The wheel sensor rotors are built into the

Page 1079 of 3371

INFINITI QX56 2004 Factory Service Manual BRC-66
[VDC/TCS/ABS]
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
Revision: August 20072004 QX56
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)PFP:47660
Removal and InstallationEFS003RQ
REMOVAL
1. Disconnect the nega

Page 1080 of 3371

INFINITI QX56 2004 Factory Service Manual ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
BRC-67
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Revision: August 20072004 QX56
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
To install,

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