Infiniti G37 Coupe. Manual — part 279
BRC-90
< SYMPTOM DIAGNOSIS >
[VDC/TCS/ABS]
EXCESSIVE ABS FUNCTION OPERATION FREQUENCY
SYMPTOM DIAGNOSIS
EXCESSIVE ABS FUNCTION OPERATION FREQUENCY
Diagnosis Procedure
INFOID:0000000001635149
1.
CHECK START
Check front and rear brake force distribution using a brake tester. Refer to
BR-63, "General Specifications"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check brake system.
2.
CHECK FRONT AND REAR AXLE
Make sure that there is no excessive play in the front and rear axles.
• Front: Refer to
• Rear: Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning components.
3.
CHECK WHEEL SENSOR AND SENSOR ROTOR
Check the following.
• Wheel sensor installation for damage.
• Sensor rotor installation for damage.
• Wheel sensor connector connection.
• Wheel sensor harness inspection.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> • Replace wheel sensor or sensor rotor.
• Repair harness.
4.
CHECK ABS WARNING LAMP DISPLAY
Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.
Is the ABS warning lamp illuminated?
YES
>> Perform self-diagnosis. Refer to
BRC-26, "CONSULT-III Function"
.
NO
>> Normal
UNEXPECTED PEDAL REACTION
BRC-91
< SYMPTOM DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
UNEXPECTED PEDAL REACTION
Diagnosis Procedure
INFOID:0000000001635150
1.
CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Refer to
BR-7, "Inspection and Adjustment"
Is the stroke too large?
YES
>> • Bleed air from brake tube and hose. Refer to
BR-12, "Bleeding Brake System"
• Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake system
fluid leakage, etc.
- Brake pedal: Refer to
BR-7, "Inspection and Adjustment"
.
- Brake master cylinder: Refer to
- Brake booster: Refer to
- Brake fluid: Refer to
NO
>> GO TO 2.
2.
CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force is
normal in this condition. Connect connector after inspection.
Is the inspection result normal?
YES
>> Normal
NO
>> Check brake system.
BRC-92
< SYMPTOM DIAGNOSIS >
[VDC/TCS/ABS]
THE BRAKING DISTANCE IS LONG
THE BRAKING DISTANCE IS LONG
Diagnosis Procedure
INFOID:0000000001635151
CAUTION:
The stopping distance on slippery road surfaces might be longer when the ABS is operating than
when the ABS is not operating.
1.
CHECK FUNCTION
Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector to deactivate
ABS. In this condition, check stopping distance. After inspection, connect connector.
Is the inspection result normal?
YES
>> Normal
NO
>> Check brake system.
ABS FUNCTION DOES NOT OPERATE
BRC-93
< SYMPTOM DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
ABS FUNCTION DOES NOT OPERATE
Diagnosis Procedure
INFOID:0000000001635152
CAUTION:
ABS does not operate when speed is 10 km/h (6 MPH) or lower.
1.
CHECK ABS WARNING LAMP DISPLAY
Make sure that the ABS warning lamp turns OFF after ignition switch is turned ON or when driving.
Is the inspection result normal?
YES
>> Normal
NO
>> Perform self-diagnosis.
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