2010 INFINITI QX56 Factory Service Manual

brake light instrument panel transmission fluid jump start terminals driver seat adjustment change key battery

Page 521 of 4210

INFINITI QX56 2010 Factory Service Manual C1101, C1102, C1103, C1104 WHEEL SENSOR-1
BRC-29
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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NOTE:
The green POWER indicator should illuminate. If the POWER indicator does

C1101, C1102, C1103, C1104 WHEEL SENSOR-1
BRC-29
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
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NOTE:
The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the
battery in the ABS active wheel sensor tester before proceeding.
3. Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel
sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.
NOTE:
If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and
retest.
Does the ABS active wheel s ensor tester detect a signal?
YES >> GO TO 3
NO >> Replace the wheel sensor. Refer to BRC-114, "
Removal and Installation".
3.CHECK TIRES
Check the inflation pressure, wear and size of each tire.
Is the inspection result normal?
YES >> GO TO 4
NO >> Adjust tire pressure or replace tire(s).
4.CHECK WHEEL BEARINGS
Check wheel bearing axial end play. Refer to FA X - 6 , "
On-Vehicle Inspection and Service" (front) or RAX-6,
"On-Vehicle Inspection and Service" (rear).
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair or replace as necessary. Refer to FAX-7, "
Removal and Installation" (front) or RAX-8,
"Removal and Installation" (rear).
5.CHECK WIRING HARNESS FOR SHORT CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connec- tor and wheel sensor connector of malfunction code.
2. Check continuity between wheel sensor connector terminals
and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair the circuit.
6.CHECK WIRING HARNESS FOR OPEN CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) connector and the malfunctioning wheel
sensor connector.
Is the inspection result normal?
Continuity should not exist.
AWFIA0188ZZ
Wheel sensor ABS actuator and
electric unit (control unit) Wheel sensor
Continuity
Connector Terminal Connector Terminal
Front LH
E12545
E18 1
Ye s
46
2
Front RH 34
E117 1
33 2
Rear LH 37
C11 2
36 1
Rear RH 42
C10 2
43 1
Revision: April 20092010 QX56

Page 522 of 4210

INFINITI QX56 2010 Factory Service Manual BRC-30
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1101, C1102, C1103,
C1104 WHEEL SENSOR-1
YES >> Replace the ABS actuator and electric unit (control unit). Refer to BRC-116, "Removal and Instal-
lation"

Page 523 of 4210

INFINITI QX56 2010 Factory Service Manual C1105, C1106, C1107, C1108 WHEEL SENSOR-2
BRC-31
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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C1105, C1106, C1107, C1108 WHEEL SENSOR-2
DescriptionINFOID:0000000005147968
Wh

C1105, C1106, C1107, C1108 WHEEL SENSOR-2
BRC-31
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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C1105, C1106, C1107, C1108 WHEEL SENSOR-2
DescriptionINFOID:0000000005147968
When the sensor rotor rotates, the magnetic field c hanges. It converts the magnetic field changes to current
signals (rectangular wave) and transmits them to t he ABS actuator and electric unit (control unit).
DTC LogicINFOID:0000000005147969
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to BRC-31, "Diagnosis Procedure".
NO >> Inspection End
Diagnosis ProcedureINFOID:0000000005194911
Regarding Wiring Diagram information, refer to BRC-92, "Wiring Diagram - BRAKE CONTROL SYSTEM -".
CAUTION:
Do not check between wheel sensor terminals.
1.CONNECTOR INSPECTION
1. Disconnect the ABS actuator and electric unit (contro l unit) connector and wheel sensor of malfunctioning
code.
2. Check the terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal?
YES >> GO TO 2
DTC Display item Malfunction detected condition Possible cause
C1105 RR RH SENSOR-2 When the circuit in the rear RH wheel sensor is short-cir-
cuited. Or when the distance between the wheel sensor
and sensor rotor is too large and the sensor pulse cannot
be recognized by the control unit.
• Harness or connector
• Wheel sensor
• ABS actuator and electric unit (control unit)
C1106 RR LH SENSOR-2
When the circuit in the rear LH wheel sensor is short-cir-
cuited. Or when the distance between the wheel sensor
and sensor rotor is too large and the sensor pulse cannot
be recognized by the control unit.
C1107 FR RH SENSOR-2 When the circuit in the front RH wheel sensor is short-cir-
cuited. Or when the distance between the wheel sensor
and sensor rotor is too large and the sensor pulse cannot
be recognized by the control unit.
C1108 FR LH SENSOR-2 When the circuit in the front LH wheel sensor is short-cir-
cuited. Or when the distance between the wheel sensor
and sensor rotor is too large and the sensor pulse cannot
be recognized by the control unit.
Self-diagnosis results
RR RH SENSOR-2RR LH SENSOR-2
FR RH SENSOR-2 FR LH SENSOR-2
Revision: April 20092010 QX56

Page 524 of 4210

INFINITI QX56 2010 Factory Service Manual BRC-32
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1105, C1106, C1107,
C1108 WHEEL SENSOR-2
NO >> Repair or replace as necessary.
2.CHECK WHEEL SENSOR OUTPUT SIGNAL
1. Connect ABS active wheel sensor teste

BRC-32
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1105, C1106, C1107,
C1108 WHEEL SENSOR-2
NO >> Repair or replace as necessary.
2.CHECK WHEEL SENSOR OUTPUT SIGNAL
1. Connect ABS active wheel sensor tester (J-45741) to wheel sensor using appropriate adapter.
2. Turn on the ABS active wheel sensor tester power switch. NOTE:
The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the
battery in the ABS active wheel sensor tester before proceeding.
3. Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel
sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.
NOTE:
If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and
retest.
Does the ABS active wheel sensor tester detect a signal?
YES >> GO TO 3
NO >> Replace the wheel sensor. Refer to BRC-114, "
Removal and Installation".
3.CHECK TIRES
Check the inflation pressure, wear and size of each tire.
Is the inspection result normal?
YES >> GO TO 4
NO >> Adjust tire pressure or replace tire(s).
4.CHECK WHEEL BEARINGS
Check wheel bearing axial end play. Refer to FAX-6, "
On-Vehicle Inspection and Service" (front) or RAX-6,
"On-Vehicle Inspection and Service" (rear).
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair or replace as necessary. Refer to FA X - 7 , "
Removal and Installation" (front) or RAX-8,
"Removal and Installation" (rear).
5.CHECK WIRING HARNESS FOR SHORT CIRCUIT
1. Disconnect ABS actuator and elec tric unit (control unit) connec-
tor and wheel sensor connector of malfunction code.
2. Check continuity between wheel sensor connector terminals and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair the circuit.
6.CHECK WIRING HARNESS FOR OPEN CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) connecto r and the malfunctioning wheel
sensor connector. Continuity should not exist.
AWFIA0188ZZ
Revision: April 20092010 QX56

Page 525 of 4210

INFINITI QX56 2010 Factory Service Manual C1105, C1106, C1107, C1108 WHEEL SENSOR-2
BRC-33
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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Is the inspection result normal?
YES >> Replace the ABS actuator and elec tric

Page 526 of 4210

INFINITI QX56 2010 Factory Service Manual BRC-34
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1109 POWER AND GROUND SYSTEM
C1109 POWER AND GROUND SYSTEM
DescriptionINFOID:0000000005147973
Supplies electric power to the ABS ac
tuator and electric uni

BRC-34
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1109 POWER AND GROUND SYSTEM
C1109 POWER AND GROUND SYSTEM
DescriptionINFOID:0000000005147973
Supplies electric power to the ABS ac
tuator and electric unit (control unit).
DTC LogicINFOID:0000000005147974
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to BRC-34, "Diagnosis Procedure".
NO >> Inspection End
Diagnosis ProcedureINFOID:0000000005147975
Regarding Wiring Diagram information, refer to BRC-92, "Wiring Diagram - BRAKE CONTROL SYSTEM -".
1.CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, re\
pair or replace terminal.
4. Reconnect connectors and then perform the self-diagnosis. Refer to BRC-23, "
CONSULT-III Function
(ABS)".
Is any item indicated on the self-diagnosis display?
YES >> GO TO 2
NO >> Poor connection of connector term inal. Repair or replace connector.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (C ONTROL UNIT) POWER SUPPLY CIRCUIT AND
GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check voltage between ABS actuator and electric unit (control
unit) connector E125 terminal 4 and ground.
DTC Display item Malfunction detected condition Possible cause
C1109 BATTERY VOLTAGE
[ABNORMAL] When the ABS actuator and elec
tric unit (control unit)
power supply voltage is lower than normal. • Harness or connector
• ABS actuator and electric unit
(control unit)
Self-diagnosis results
BATTERY VOLTAGE [ABNORMAL]
ABS actuator and elec- tric unit (control unit) —Condition Voltage
Connector Terminal
E125 4 Ground Ignition switch: ON Battery voltage
Ignition switch: OFF Approx. 0V
AWFIA0583ZZ
Revision: April 20092010 QX56

Page 527 of 4210

INFINITI QX56 2010 Factory Service Manual C1109 POWER AND GROUND SYSTEMBRC-35
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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4. Turn ignition switch OFF.
5. Check continuity between ABS actuator and electric unit (con

Page 528 of 4210

INFINITI QX56 2010 Factory Service Manual BRC-36
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1110, C1170 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
C1110, C1170 ABS ACTUATOR AND EL
ECTRIC UNIT (CONTROL UNIT)
DTC LogicINFOID:0000000005147977
DTC

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