Infiniti I35 (A33). Manual — part 144
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5
WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
I
Sensor mounting inspection
I
Sensor pick-up inspection for iron chips
I
Sensor rotor inspection (e.g. Number of teeth, damaged teeth)
I
Sensor connector engagement inspection
Is inspection result OK?
Yes
©
Normal
No
©
Wheel speed sensor and rotor lines repair
Symptom 3: Longer Stopping Distance
NHBR0288
Inspection procedure
1
INSPECTION START
Check that the stopping distance when braking becomes longer only on a snowy or gravel road.
Does the stopping distance when braking become longer only on a snowy or gravel road?
Yes
©
It may be longer than that of vehicle without ABS.
No
©
GO TO 2.
2
PERFORMANCE CHECK
Disconnect the actuator relay box to deactivate the ABS function.
Is the stopping distance still longer?
Yes
©
I
Brake line air bleeding
I
Brake line inspection
No
©
GO TO 3.
3
ABS WARNING LAMP INDICATOR INSPECTION
Check that the ABS warning lamp illuminates.
Does the ABS warning lamp illuminate?
Yes
©
Perform the self-diagnosis.
No
©
GO TO 4.
4
WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
I
Sensor mounting inspection
I
Sensor pick-up inspection for iron chips
I
Sensor rotor inspection (e.g. Number of teeth, damaged teeth)
I
Sensor connector engagement inspection
Is inspection result OK?
Yes
©
Normal
No
©
Wheel speed sensor and rotor lines repair
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
VDC
Symptom 2: Unexpected Pedal Action (Cont’d)
BR-161
![](/vehicles/zatt/ltherawowha/yose/frevemme.png)
Symptom 4: ABS Does Not Work
NHBR0289
Inspection procedure
1
ABS WARNING LAMP INDICATOR INSPECTION
Check that the ABS warning lamp illuminates.
Does the ABS warning lamp illuminate?
Yes
©
Perform the self-diagnosis.
No
©
GO TO 2.
2
WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
I
Sensor mounting inspection
I
Sensor pick-up inspection for iron chips
I
Sensor rotor inspection (e.g. Number of teeth, damaged teeth)
I
Sensor connector engagement inspection
Is inspection result OK?
Yes
©
Normal
No
©
Wheel speed sensor and rotor lines repair
Symptom 5: Pedal Vibration and Noise
NHBR0290
Inspection procedure
1
SYMPTOM CHECK
Check the brake system for pedal vibration or noise at the engine start.
Is inspection result OK?
Yes
©
Perform the self-diagnosis.
No
©
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.
I
When shifting gears
I
High speed cornering
I
When a gust of wind
Is inspection result OK?
Yes
©
GO TO 3.
No
©
Normal
3
SYMPTOM CHECK 3
Does the symptom appear during normal braking operation?
CAUTION:
ABS may work in following driving conditions even if there is no sudden brake.
I
When road friction is low.
I
High speed cornering
I
When a gust of wind
Is inspection result OK?
Yes
©
GO TO 4.
No
©
Normal
TROUBLE DIAGNOSES FOR SYMPTOMS
VDC
Symptom 4: ABS Does Not Work
BR-162
![](/vehicles/zatt/ltherawowha/yose/zayonigtrert.png)
4
SYMPTOM CHECK 4
Check that the symptom is reproduce when the engine speed is increased with the vehicle stopped.
Is inspection result OK?
Yes
©
GO TO 5.
No
©
Normal
CAUTION:
This symptom may appear with vehicle stopped.
5
SYMPTOM CHECK 5
Check that the symptom is reproduce when any switch of electrical equipment is operated.
Is inspection result OK?
Yes
©
Check that there are no radio, antenna, and antenna lead-in wires (including wiring) near
control unit.
No
©
GO TO 6.
6
ABS WARNING LAMP INSPECTION
Check that the ABS warning lamp turns on.
Is inspection result OK?
Yes
©
Perform the self-diagnosis.
No
©
GO TO 7.
7
WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
I
Sensor mounting inspection
I
Sensor pick-up inspection for iron chips (e.g. Number of teeth, damaged teeth)
I
Sensor connector engagement inspection
I
Wheel speed sensor path harness and connector inspection
Is inspection result OK?
Yes
©
Normal
No
©
Wheel speed sensor and rotor lines repair
Symptom 6: VDC OFF Indicator Lamp Does Not
Illuminate
NHBR0291
Inspection procedure
1
VDC OFF INDICATOR LAMP INSPECTION
Disconnect the VDC/TCS/ABS control unit connector.
Does the ABS warning lamp and VDC OFF indicator lamp illuminate?
Yes
©
VDC/TCS/ABS control unit malfunction. Repair or replace the control unit.
No
©
Combination meter system malfunction. Check the combination meter.
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
VDC
Symptom 5: Pedal Vibration and Noise (Cont’d)
BR-163
![](/vehicles/zatt/ltherawowha/yose/ededeschesov.png)
Symptom 7: SLIP Indicator Lamp Does Not
Illuminate
NHBR0292
Inspection procedure
1
SLIP INDICATOR LAMP BURNED-OUT BULB INSPECTION
Check for continuity between the power supply terminal of meter and terminal of ABS warning lamp.
Is inspection result OK?
OK
©
GO TO 2.
NG
©
Circuit malfunction in SLIP indicator lamp or combination meter
2
SLIP INDICATOR LAMP POWER CIRCUIT INSPECTION
Disconnect the meter connector. Check that the voltage between the vehicle-side harness terminal and body ground is
battery voltage (Approx. 12V).
Is inspection result OK?
Yes
©
GO TO 3.
No
©
I
Fuse inspection
I
Inspection for harness and connectors between fuse block and meter
I
Check the power supply circuit (battery and ignition switch circuit).
3
SLIP INDICATOR LAMP HARNESS INSPECTION
1. Disconnect connectors for the VDC/TCS/ABS control unit and meter vehicle-side harness.
2. Check the harness between the meter and the VDC/TCS/ABS control unit for an open/shorted circuit.
Is inspection result OK?
OK
©
GO TO 4.
NG
©
Repair or replace the disconnected harness.
4
SLIP INDICATOR LAMP CONNECTOR INSPECTION
Check connectors for the VDC/TCS/ABS control unit and meter vehicle-side harness.
Is inspection result OK?
Yes
©
Connect connectors, and perform the self-diagnosis. The vehicle harness has the inter-
mediate connector. Refer to the vehicle wiring diagram, always check it.
No
©
Repair or replace the disconnected connector.
Symptom 8: During VDC/TCS/ABS Control,
Vehicle Behavior is Jerky
NHBR0293
Inspection procedure
1
ENGINE SPEED SIGNAL INSPECTION
Perform “DATA MONITOR” with CONSULT-II for the VDC/TCS/ABS control unit.
Is the engine speed at idle 400 rpm or higher?
Yes
©
Normal
No
©
GO TO 2.
TROUBLE DIAGNOSES FOR SYMPTOMS
VDC
Symptom 7: SLIP Indicator Lamp Does Not Illuminate
BR-164
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