engine INFINITI QX56 2011 Factory Repair Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2011, Model line: QX56, Model: INFINITI QX56 2011Pages: 5598, PDF Size: 94.53 MB
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![INFINITI QX56 2011 Factory Repair Manual
C1105, C1106, C1107, C1108 WHEEL SENSOR
BRC-71
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
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BRC
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Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-de](/img/42/57033/w960_57033-587.png "INFINITI QX56 2011 Factory Repair Manual
C1105, C1106, C1107, C1108 WHEEL SENSOR
BRC-71
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
D
E
G H
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K L
M A
B
BRC
N
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Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-de")
C1105, C1106, C1107, C1108 WHEEL SENSOR
BRC-71
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
D
E
G H
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M A
B
BRC
N
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Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY SYSTEM
Check ABS actuator and electric unit (cont rol unit) power supply system. Refer to BRC-113, "
Diagnosis Proce-
dure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace error-detected parts.
3.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 4.
NO >> Repair 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".
4.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 5.
NO >> Repair or replace error-detected parts.
5.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" (rear).
3. Erase Self-diagnosis result for “ABS”.
4. Start the engine. Drive the vehicle at vehicle s peed of approx. 30 km/h (19 MPH) for approx. 1 minute.
5. Perform self-diagnosis for “ABS”.
Is DTC
“C1105”, “C1106”, “C1107” or “C1108” detected?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-137, "Removal and Installa-
tion".
NO >> INSPECTION END
ABS actuator and electric unit (control unit) —Continuity
Connector Terminal
E36 20, 34
Ground Not existed
33, 19
22, 36
35, 21
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Repair Manual
BRC-72
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1109 POWER AND
GROUND SYSTEM
C1109 POWER AND GROUND SYSTEM
DescriptionINFOID:0000000006222596
Ignition power supply is supplied to ABS actuator and elect](/img/42/57033/w960_57033-588.png "INFINITI QX56 2011 Factory Repair Manual
BRC-72
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1109 POWER AND
GROUND SYSTEM
C1109 POWER AND GROUND SYSTEM
DescriptionINFOID:0000000006222596
Ignition power supply is supplied to ABS actuator and elect")
BRC-72
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1109 POWER AND
GROUND SYSTEM
C1109 POWER AND GROUND SYSTEM
DescriptionINFOID:0000000006222596
Ignition power supply is supplied to ABS actuator and electric unit (control unit).
DTC LogicINFOID:0000000006222597
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK DTC DETECTION
With CONSULT-III.
1. Start the engine. Drive the vehicle at vehicle speed of approx. 10 km/h (6 MPH) or more for approx. 10
seconds.
2. Perform self-diagnosis for “ABS”
Is DTC
“C1109” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-72, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006222598
1.CHECK ABS ACTUATOR AND ELECTRIC UNIT (C ONTROL UNIT) IGNITION POWER SUPPLY (1)
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) harness connector.
3. Check voltage between ABS actuator and electr ic unit (control unit) harness connector and ground.
4. Turn the ignition switch ON. CAUTION:
Never start engine.
5. Check voltage between ABS actuator and electr ic unit (control unit) harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CON TROL UNIT) IGNITION POWER SUPPLY CIRCUIT
(1)
1. Turn the ignition switch OFF.
2. Check 10A fuse (#57).
3. Disconnect IPDM E/R harness connector.
DTC Display Item Malfunction detected condition Possible causes
C1109 BATTERY VOLTAGE
[ABNORMAL] When ignition voltage is 10 V or less.
When ignition voltage is 16 V or more. Harness or connector
ABS actuator and electric unit
(control unit)
Fuse
Ignition power supply system
Battery
ABS actuator and electric unit (control unit) —Voltage
Connector Terminal
E36 18 Ground Approx. 0 V
ABS actuator and electric unit (control unit) —Voltage
Connector Terminal
E36 18 Ground 10 − 16 V
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Repair Manual
C1109 POWER AND GROUND SYSTEMBRC-73
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
D
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G H
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M A
B
BRC
N
O P
4. Check continuity between ABS actuator and electr ic unit (control unit) harness connector](/img/42/57033/w960_57033-589.png "INFINITI QX56 2011 Factory Repair Manual
C1109 POWER AND GROUND SYSTEMBRC-73
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
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G H
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M A
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BRC
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4. Check continuity between ABS actuator and electr ic unit (control unit) harness connector")
C1109 POWER AND GROUND SYSTEMBRC-73
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
4. Check continuity between ABS actuator and electr ic unit (control unit) harness connector and IPDM E/R
harness connector.
5. Check for continuity between ABS actuator and el ectric unit (control unit) harness connector and the
ground.
Is the inspection result normal?
YES >> Perform trouble diagnosis for ignition power supply. Refer to PG-89, "Wiring Diagram - IGNITION
POWER SUPPLY -".
NO >> Repair or replace error-detected parts.
3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (C ONTROL UNIT) IGNITION POWER SUPPLY (2)
1. Turn the ignition switch OFF.
2. Check voltage between ABS actuator and electr ic unit (control unit) harness connector and ground.
3. Turn the ignition switch ON. CAUTION:
Never start engine.
4. Check voltage between ABS actuator and electr ic unit (control unit) harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CON TROL UNIT) IGNITION POWER SUPPLY CIRCUIT
(2)
1. Turn the ignition switch OFF.
2. Check 10A fuse (#74).
3. Check continuity and short circuit between ABS act uator and electric unit (control unit) harness connector
terminal (49) and 10A fuse (#74).
Is the inspection result normal?
YES >> Perform trouble diagnosis for ignition power supply. Refer to PG-89, "Wiring Diagram - IGNITION
POWER SUPPLY -".
NO >> Repair or replace error-detected parts.
5.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Check continuity between ABS actuator and elec tric unit (control unit) harness connector and ground.
ABS actuator and electric unit (control unit) IPDM E/R
Continuity
Connector Terminal Connector Terminal
E36 18 E15 59 Existed
ABS actuator and electric unit (control unit)
— Continuity
Connector Terminal
E36 18 Ground Not existed
ABS actuator and electric unit (control unit) —Voltage
Connector Terminal
E37 49 Ground Approx. 0 V
ABS actuator and electric unit (control unit) —Voltage
Connector Terminal
E37 49 Ground 10 − 16 V
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Repair Manual
C1111 PUMP MOTORBRC-75
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
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C1111 PUMP MOTOR
DTC LogicINFOID:0000000006222599
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK](/img/42/57033/w960_57033-591.png "INFINITI QX56 2011 Factory Repair Manual
C1111 PUMP MOTORBRC-75
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
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C1111 PUMP MOTOR
DTC LogicINFOID:0000000006222599
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK")
C1111 PUMP MOTORBRC-75
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C1111 PUMP MOTOR
DTC LogicINFOID:0000000006222599
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK DTC DETECTION
With CONSULT-III.
1. Turn the ignition switch OFF and depress the brake pedal 20 times or more.
2. Start the engine and wait for 3 minutes or more. CAUTION:
Never drive the vehicle.
3. Depress the brake pedal, and then operate the ABS act uator and electric unit (control unit) motor repeats
ON and OFF 4 times or more.
CAUTION:
Never drive the vehicle.
4. Perform self-diagnosis for “ABS”.
Is DTC
“C 1111” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-75, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006222600
1.CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) harness connector.
3. Check voltage between ABS actuator and electr ic unit (control unit) harness connector and ground.
4. Turn the ignition switch ON. CAUTION:
Never start engine.
5. Check voltage between ABS actuator and electr ic unit (control unit) harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT
DTC Display Item Malfunction detected condition Possible causes
C 1111 P U M P M O T O R When a malfunction is detected in motor or motor
relay.
When a low pressure malfunction is detected in ac- cumulator.
When a malfunction is detected in accumulator
pressure sensor. Harness or connector
ABS actuator and electric unit
(control unit)
Fusible link
Battery power supply system
Motor/accumulator assembly
ABS actuator and electric unit (control unit)
—Voltage
Connector Terminal
E36 4 Ground Battery voltage
E37 47
ABS actuator and electric unit (control unit)
—Voltage
Connector Terminal
E36 4 Ground Battery voltage
E37 47
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Repair Manual
C1115 WHEEL SENSORBRC-77
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
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G H
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M A
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BRC
N
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C1115 WHEEL SENSOR
DTC LogicINFOID:0000000006222601
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CH](/img/42/57033/w960_57033-593.png "INFINITI QX56 2011 Factory Repair Manual
C1115 WHEEL SENSORBRC-77
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
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C1115 WHEEL SENSOR
DTC LogicINFOID:0000000006222601
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CH")
C1115 WHEEL SENSORBRC-77
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
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C1115 WHEEL SENSOR
DTC LogicINFOID: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
“C 111 5” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-77, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID: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 WT-69, "
Tire Air Pressure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Adjust air pressure. Or replace tire. Refer to WT-69, "
Tire Air Pressure".
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY SYSTEM
Check ABS actuator and electric unit (cont rol unit) power supply system. Refer to BRC-113, "
Diagnosis Proce-
dure".
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 electr ic 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 termi nal for power supply circuit
DTC Display Item Malfunction detected condition Possible causes
C 111 5 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)
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Repair Manual
BRC-78
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1115 WHEEL SENSOR
Measurement connector and te
rminal for signal circuit
4. Check continuity between ABS actuator and electr ic unit (control unit) harness](/img/42/57033/w960_57033-594.png "INFINITI QX56 2011 Factory Repair Manual
BRC-78
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1115 WHEEL SENSOR
Measurement connector and te
rminal for signal circuit
4. Check continuity between ABS actuator and electr ic unit (control unit) harness")
BRC-78
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1115 WHEEL SENSOR
Measurement connector and te
rminal for signal circuit
4. Check continuity between ABS actuator and electr ic 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" (rear).
3. Erase Self-diagnosis result for “ABS”.
4. Start the engine. Drive the vehicle at vehi cle 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 electr ic unit (control unit). Refer to BRC-137, "Removal and Installa-
tion".
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
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Repair Manual
C1116 STOP LAMP SWITCHBRC-79
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
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BRC
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C1116 STOP LAMP SWITCH
DTC LogicINFOID:0000000006222603
DTC DETECTION LOGIC
DTC CONFIRMATION PROCED](/img/42/57033/w960_57033-595.png "INFINITI QX56 2011 Factory Repair Manual
C1116 STOP LAMP SWITCHBRC-79
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
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M A
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BRC
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C1116 STOP LAMP SWITCH
DTC LogicINFOID:0000000006222603
DTC DETECTION LOGIC
DTC CONFIRMATION PROCED")
C1116 STOP LAMP SWITCHBRC-79
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
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C1116 STOP LAMP SWITCH
DTC LogicINFOID: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
“C 111 6” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-79, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID: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 EXL-40, "
Wiring Diagram".
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 electr ic unit (control unit) harness connector and ground.
3. Turn the ignition switch ON. CAUTION:
Never start engine.
4. Check voltage between ABS actuator and electr ic 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
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Repair Manual
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.](/img/42/57033/w960_57033-596.png "INFINITI QX56 2011 Factory Repair Manual
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.")
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 electr ic unit (control unit) harness connector and stop lamp
switch harness connector.
4. Check continuity between ABS actuator and elec tric 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
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Repair Manual
C1116 STOP LAMP SWITCHBRC-81
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
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BRC
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7.CHECK STOP LAMP SWITCH CIRCUIT (2)
1. Turn the ignition switch OFF.
2. Check 10A fuse (#3).
3. Di](/img/42/57033/w960_57033-597.png "INFINITI QX56 2011 Factory Repair Manual
C1116 STOP LAMP SWITCHBRC-81
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
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BRC
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7.CHECK STOP LAMP SWITCH CIRCUIT (2)
1. Turn the ignition switch OFF.
2. Check 10A fuse (#3).
3. Di")
C1116 STOP LAMP SWITCHBRC-81
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
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7.CHECK STOP LAMP SWITCH CIRCUIT (2)
1. Turn the ignition switch OFF.
2. Check 10A fuse (#3).
3. Disconnect fuse block (J/B) harness connector.
4. Check fuse block (J/B) pin terminals for damage or loose connection with harness connector.
5. Check continuity between stop lamp switch harness connector and fuse block (J/B).
Is the inspection result normal?
YES >> Perform trouble diagnosis for ignition power supply. Refer to PG-89, "Wiring Diagram - IGNITION
POWER SUPPLY -".
NO >> Repair or replace error-detected parts.
8.CHECK STOP LAMP SWITCH POWER SUPPLY (3)
1. Turn the ignition switch OFF.
2. Check voltage between ABS actuator and electr ic unit (control unit) harness connector and ground.
3. Turn the ignition switch ON. CAUTION:
Never start engine.
4. Check voltage between ABS actuator and electr ic unit (control unit) harness connector and ground.
Is the inspection result normal?
YES >> GO TO 13.
NO >> GO TO 9.
9.CHECK STOP LAMP SWITCH CIRCUIT (3)
1. Turn the ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check continuity between ABS actuator and electr ic unit (control unit) harness connector and stop lamp
switch harness connector.
4. Check continuity between ABS actuator and elec tric unit (control unit) harness connector and ground.
Is the inspection result normal?
Stop lamp switch Fuse block (J/B) Continuity
Connector Terminal Connector Terminal
E115 3 E103 4F Existed
ABS actuator and electric unit (control unit)
— Condition Voltage
Connector Terminal
E36 37 Ground Brake pedal depressed
Approx. 0 V
Brake pedal not depressed
ABS actuator and electric unit (control unit)
— Condition Voltage
Connector Terminal
E36 37 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 37 E115 2 Existed
ABS actuator and electric unit (control unit) —Continuity
Connector Terminal
E36 37 Ground Not existed
Revision: 2010 May2011 QX56
Page 599 of 5598
![INFINITI QX56 2011 Factory Repair Manual
BRC-82
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1116 STOP LAMP SWITCH
YES >> GO TO 10.
NO >> Repair or replace error-detected parts.
10.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to BRC-85, "](/img/42/57033/w960_57033-598.png "INFINITI QX56 2011 Factory Repair Manual
BRC-82
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1116 STOP LAMP SWITCH
YES >> GO TO 10.
NO >> Repair or replace error-detected parts.
10.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to BRC-85, \"")
BRC-82
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1116 STOP LAMP SWITCH
YES >> GO TO 10.
NO >> Repair or replace error-detected parts.
10.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 11.
NO >> Repair or replace stop lamp switch. Refer to BR-20, "
Removal and Installation".
11 .CHECK STOP LAMP SWITCH POWER SUPPLY (4)
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 12.
12.CHECK STOP LAMP SWITCH CIRCUIT (4)
1. Turn the ignition switch OFF.
2. Check 10A fuse (#7).
3. Disconnect fuse block (J/B) harness connector.
4. Check fuse block (J/B) pin terminals for damage or loose connection with harness connector.
5. Check continuity between stop lamp swit ch harness connector and fuse block (J/B).
Is the inspection result normal?
YES >> Perform trouble diagnosis for battery power supply. Refer to PG-11, "Wiring Diagram - BATTERY
POWER SUPPLY -".
NO >> Repair or replace error-detected parts.
13.CHECK STOP LAMP RELAY POWER SUPPLY (1)
1. Turn the ignition switch OFF.
2. Check voltage between ABS actuator and electr ic unit (control unit) harness connector and ground.
3. Turn the ignition switch ON. CAUTION:
Never start engine.
4. Check voltage between ABS actuator and electr ic unit (control unit) harness connector and ground.
Stop lamp switch
— Voltage
Connector Terminal
E115 1 Ground Approx. 0 V
Stop lamp switch — Voltage
Connector Terminal
E115 1 Ground Battery voltage
Stop lamp switch Fuse block (J/B) Continuity
Connector Terminal Connector Terminal
E115 1 E103 8F Existed
ABS actuator and electric unit (control unit)
—Voltage
Connector Terminal
E36 46 Ground Approx. 0 V
Revision: 2010 May2011 QX56