Nissan 350Z Workshop Maunual 2004 (9) PDF | Page 36

BRC-36
[ABS]
TROUBLE DIAGNOSIS
Revision: 2004 December 2004.5 350Z
Symptom 1 Excessive ABS Function Operation Frequency AFS0029G
1. INSPECTION START
Check brake force distribution.
OK or NG
OK >> GO TO 2.
NG >> Check brake system.
2. FRONT AND REAR AXLE INSPECTION
Make sure there is no excessive play in the front and rear axles.
OK or NG
OK >> GO TO 3.
NG >> Repair.
3. WHEEL SENSOR INSPECTION
Wheel Sensor Inspection
? Sensor mount and damage inspection
? Sensor rotor mount and damage inspection
? Sensor connector connection inspection
? Sensor harness inspection
OK or NG
OK >> GO TO 4.
NG >> Sensor or sensor rotor replacement
4. ABS WARNING LAMP DISPLAY CHECK
Make sure the warning lamp turns off approximately 1 second after the ignition switch is turned on or when
driving.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-21, "
SELF-DIAGNOSIS" .
Symptom 2 Unexpected Pedal Reaction AFS0029H
1. BRAKE PEDAL STROKE INSPECTION
Check brake pedal stroke.
Is the stroke too big?
YES >> ? Bleed air from the brake piping.
? Check the brake pedal, brake booster, and master cylinder mount for play, looseness, and
brake system for fluid leaks, etc. If any malfunctions are found, make repairs.
NO >> GO TO 2.
2. PERFORMANCE CHECK
Disconnect the ABS actuator and electric unit (control unit) connector, and make sure the braking force is suf-
ficient when the ABS is not operating. After the inspection, reconnect the connector.
OK or NG
OK >> GO TO 3.WHEEL SENSOR INSPECTION in BRC-36, "Symptom 1 Excessive ABS Function
Operation Frequency" .
NG >> Check brake system.

Summary of Content

BRC-36[ABS]TROUBLE DIAGNOSISRevision: 2004 December 2004.5 350ZSymptom 1 Excessive ABS Function Operation Frequency AFS0029G1. INSPECTION STARTCheck brake force distribution.OK or NGOK GO TO 2.NG Check brake system.2. FRONT AND REAR AXLE INSPECTIONMake sure there is no excessive play in the front and rear axles.OK or NGOK GO TO 3.NG Repair.3. WHEEL SENSOR INSPECTIONWheel Sensor Inspection Sensor mount and damage inspection Sensor rotor mount and damage inspection Sensor connector connection inspection Sensor harness inspectionOK or NGOK GO TO 4.NG Sensor or sensor rotor replacement4. ABS WARNING LAMP DISPLAY CHECKMake sure the warning lamp turns off approximately 1 second after the ignition switch is turned on or whendriving.OK or NGOK NormalNG Perform self-diagnosis. Refer to BRC-21, "SELF-DIAGNOSIS" .Symptom 2 Unexpected Pedal Reaction AFS0029H1. BRAKE PEDAL STROKE INSPECTIONCheck brake pedal stroke.Is the stroke too big?YES Bleed air from the brake piping. Check the brake pedal, brake booster, and master cylinder mount for play, looseness, andbrake system for fluid leaks, etc. If any malfunctions are found, make repairs.NO GO TO 2.2. PERFORMANCE CHECKDisconnect the ABS actuator and electric unit (control unit) connector, and make sure the braking force is suf-ficient when the ABS is not operating. After the inspection, reconnect the connector.OK or NGOK GO TO 3.WHEEL SENSOR INSPECTION in BRC-36, "Symptom 1 Excessive ABS FunctionOperation Frequency" .NG Check brake system.