Infiniti QX56 (Z62). Manual — part 148
C1115 WHEEL SENSOR
BRC-77
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
C1115 WHEEL SENSOR
DTC Logic
INFOID:0000000006222601
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC DETECTION
With CONSULT-III.
1.
Start engine and drive vehicle at approx. 30 km/h (19 MPH) or more for approx. 1 minute.
2.
Perform self-diagnosis for “ABS”.
Is DTC “C1115” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006222602
CAUTION:
For wheel sensor, never check between terminals.
1.
CHECK TIRE
1.
Turn the ignition switch OFF.
2.
Check tire air pressure, wear and size. Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Adjust air pressure. Or replace tire. Refer to
2.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY SYSTEM
Check ABS actuator and electric unit (control unit) power supply system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK WHEEL SENSOR HARNESS
1.
Disconnect ABS actuator and electric unit (control unit) harness connector.
2.
Disconnect wheel sensor harness connector.
3.
Check continuity between ABS actuator and electric unit (control unit) harness connector and wheel sen-
sor harness connector. (Check continuity when steering wheel is steered to RH and LH, or center harness
in wheel housing is moved.)
Measurement connector and terminal for power supply circuit
DTC
Display Item
Malfunction detected condition
Possible causes
C1115
ABS SENSOR
[ABNORMAL SIGNAL]
When difference in wheel speed between any wheel
and others is detected during the vehicle is driven,
because of installation of other tires than specified.
• Harness or connector
• Wheel sensor
• Sensor rotor
• ABS actuator and electric unit
(control unit)
ABS actuator and electric unit (control unit)
Wheel sensor
Continuity
Connector
Terminal
Connector
Terminal
E36
20
E22 (Front LH wheel)
1
Existed
33
E39 (Front RH wheel)
22
C10 (Rear LH wheel)
35
C11 (Rear RH wheel)
BRC-78
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C1115 WHEEL SENSOR
Measurement connector and terminal for signal circuit
4.
Check continuity between ABS actuator and electric unit (control unit) harness connector and the ground.
Measurement connector and terminal for ground circuit
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK WHEEL SENSOR
Check wheel sensor for damage, disconnection or looseness.
• Front wheel sensor: Refer to
BRC-134, "FRONT WHEEL SENSOR : Exploded View"
• Rear wheel sensor: Refer to
BRC-135, "REAR WHEEL SENSOR : Exploded View"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>>
Replace wheel sensor.
• Front wheel sensor: Refer to
BRC-134, "FRONT WHEEL SENSOR : Removal and Installation"
• Rear wheel sensor: Refer to
BRC-135, "REAR WHEEL SENSOR : Removal and Installation"
5.
CHECK TERMINAL
• Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with har-
ness connector.
• Check each wheel sensor pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
REPLACE WHEEL SENSOR
With CONSULT-III.
1.
Connect ABS actuator and electric unit (control unit) harness connector.
2.
Replace wheel sensor. Refer to
BRC-134, "FRONT WHEEL SENSOR : Removal and Installation"
(front),
BRC-135, "REAR WHEEL SENSOR : Removal and Installation"
3.
Erase Self-diagnosis result for “ABS”.
4.
Start the engine. Drive the vehicle at vehicle speed of approx. 30 km/h for approx. 1 minute.
5.
Perform self-diagnosis for “ABS”.
DTC Is DTC “C1115” detected?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-137, "Removal and Installa-
.
NO
>> INSPECTION END
ABS actuator and electric unit (control unit)
Wheel sensor
Continuity
Connector
Terminal
Connector
Terminal
E36
34
E22 (Front LH wheel)
2
Existed
19
E39 (Front RH wheel)
36
C10 (Rear LH wheel)
21
C11 (Rear RH wheel)
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E36
20, 34
Ground
Not existed
33, 19
22, 36
35, 21
C1116 STOP LAMP SWITCH
BRC-79
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
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P
C1116 STOP LAMP SWITCH
DTC Logic
INFOID:0000000006222603
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC DETECTION
With CONSULT-III.
1.
Turn the ignition switch OFF to ON.
2.
Perform self-diagnosis for “ABS”.
Is DTC “C1116” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006222604
1.
CHECK STOP LAMP FOR ILLUMINATION
Depress brake pedal and check that stop lamp turns ON.
Does stop lamp turn ON?
YES
>> GO TO 2.
NO
>> Check stop lamp system. Refer to
2.
CHECK STOP LAMP SWITCH CLEARANCE
1.
Turn the ignition switch OFF.
2.
Check stop lamp clearance. Refer to
BR-7, "Inspection and Adjustment"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Adjust stop lamp switch clearance. Refer to
BR-7, "Inspection and Adjustment"
.
3.
CHECK STOP LAMP SWITCH POWER SUPPLY (1)
1.
Disconnect ABS actuator and electric unit (control unit) harness connector.
2.
Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
3.
Turn the ignition switch ON.
CAUTION:
Never start engine.
4.
Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
DTC
Display Item
Malfunction detected condition
Possible causes
C1116
STOP LAMP SW
• When stop lamp switch signal is not input when brake
pedal depress.
• When stop lamp switch signal is not input when stop
lamp relay operates.
• Harness or connector
• Stop lamp switch
• Stop lamp relay
• ABS actuator and electric unit
(control unit)
• Battery power supply system
ABS actuator and electric unit (control unit)
—
Condition
Voltage
Connector
Terminal
E36
17
Ground
Brake pedal depressed
Approx. 0 V
Brake pedal not depressed
BRC-80
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C1116 STOP LAMP SWITCH
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 4.
4.
CHECK STOP LAMP SWITCH CIRCUIT (1)
1.
Turn the ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check continuity between ABS actuator and electric unit (control unit) harness connector and stop lamp
switch harness connector.
4.
Check continuity between ABS actuator and electric unit (control unit) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts.
5.
CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to
BRC-85, "Component Inspection (Stop lamp Switch)"
.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace stop lamp switch. Refer to
BR-20, "Removal and Installation"
6.
CHECK STOP LAMP SWITCH POWER SUPPLY (2)
1.
Check voltage between stop lamp switch harness connector and ground.
2.
Turn the ignition switch ON.
CAUTION:
Never start engine.
3.
Check voltage between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES
>> Check pin terminals and connection of stop lamp switch harness connector for abnormal condi-
tions. Repair or replace error-detected parts.
NO
>> GO TO 7.
ABS actuator and electric unit (control unit)
—
Condition
Voltage
Connector
Terminal
E36
17
Ground
Brake pedal depressed
Battery voltage
Brake pedal not depressed
Approx. 0 V
ABS actuator and electric unit (control unit)
Stop lamp switch
Continuity
Connector
Terminal
Connector
Terminal
E36
17
E115
4
Existed
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E36
17
Ground
Not existed
Stop lamp switch
—
Voltage
Connector
Terminal
E115
3
Ground
Approx. 0 V
Stop lamp switch
—
Voltage
Connector
Terminal
E115
3
Ground
Battery voltage
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