2011 INFINITI QX56 stop start

BRC-64
< BASIC INSPECTION >[WITH VDC]
ADJUSTMENT OF STEERING ANGLE
SENSOR NEUTRAL POSITION
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
DescriptionINFOID:0000000006222588
Always adjust the neutral position of steering angle sensor before driving when the following operation is per-
formed.
× : Required —: Not required
Work ProcedureINFOID:0000000006222589
ADJUST THE NEUTRAL POSITION OF STEERING ANGLE SENSOR
CAUTION:
Always use CONSULT-III when adju sting the neutral position of steering angle sensor. (It cannot be
adjusted other than with CONSULT-III.)
1.CHECK THE VEHICLE STATUS
Stop vehicle with front wheels in the straight-ahead position.
Does the vehicle stay in the straight-ahead position?
YES >> GO TO 2.
NO >> Steer the steering wheel to the st raight-ahead position. Stop the vehicle.
2.ADJUST NEUTRAL POSITION OF STEERING ANGLE SENSOR
With CONSULT-III.
1. Turn the ignition switch ON.
CAUTION:
Never start engine.
2. Select “ABS”, “WORK SUPPORT” and “ST AN GLE SENSOR ADJUSTMENT” in this order.
3. Select “START”. CAUTION:
Never touch steering wheel while adjusting steering angle sensor.
4. After approx. 10 seconds, select “END”.
5. Turn ignition switch OFF and then turn it ON again. CAUTION:
Be sure to perform the operation above.
>> GO TO 3.
3.CHECK DATA MONITOR
With CONSULT-III.
1. The vehicle is either pointing straight ahead or t he vehicle needs to be moved. Stop when it is pointing
straight ahead.
Procedure Adjust the neutral position of steering angle sensor
Removing/ installing ABS actuator and electric unit (control unit) —
Replacing ABS actuator and electric unit (control unit) —
Removing/installing steering angle sensor ×
Replacing steering angle sensor ×
Removing/installing steering components ×
Replacing steering components ×
Removing/installing suspension components ×
Replacing suspension components ×
Removing/installing tire —
Replacing tire —
Tire rotation —
Adjusting wheel alignment. ×
Revision: 2010 May2011 QX56

BRC-66
< BASIC INSPECTION >[WITH VDC]
CALIBRATION OF DECEL G SENSOR
CALIBRATION OF DECEL G SENSOR
DescriptionINFOID:0000000006222590
CAUTION:
Always perform the decel G sensor cal
ibration before driving when the following operation is per-
formed.
NOTE:
Yaw rate/side/decel G sensor calibration is performed when performing the decel G sensor calibration.
× : Required —: Not required
Work ProcedureINFOID:0000000006222591
Decel G sensor calibration
CAUTION:
Always use CONSULT-III for the d ecel G sensor calibration. (It cannot be adjusted other than with
CONSULT-III.)
NOTE:
Yaw rate/side/decel G sensor calibration is performed when performing the decel G sensor calibration.
1.CHECK THE VEHICLE STATUS
1. Steer the steering wheel to the straight- ahead position. Stop the vehicle on level surface.
2. Stop the engine.
3. Turn the ignition switch OFF.
Is the vehicle stopped in the straight-ahead position on level surface?
YES >> GO TO 2.
NO >> Steer the steering wheel to the straight- ahead position. Stop the vehicle on level surface.
2.PERFORM DECEL G SENSOR CALIBRATION
CAUTION:
 Never allow passenger or load on the vehicle.
 Never apply vibration to the vehicle body when opening or closing door during calibration.
With CONSULT-III.
1. Turn the ignition switch ON.
CAUTION:
Never start engine.
2. Select “ABS”, “WORK SUPPORT”, “DECEL G-SENSOR CALIBRATION” in this order.
3. Select “START”.
4. After approx. 10 seconds, select “END”.
5. Turn ignition switch OFF and then turn it ON again. CAUTION:
Be sure to perform the operation above.
Procedure Decel G sensor calibration
Removing/ installing ABS actuator and electric unit (control unit) —
Replacing ABS actuator and electric unit (control unit) ×
Removing/installing steering components —
Replacing steering components —
Removing/installing suspension components —
Replacing suspension components —
Removing/installing tire —
Replacing tire —
Tire rotation —
Adjusting wheel alignment. —
Removing/installing yaw rate/side/decel G sensor ×
Replacing yaw rate/side/decel G sensor ×
Revision: 2010 May2011 QX56

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 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

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

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

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

C1116 STOP LAMP SWITCHBRC-83
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
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Is the inspection result normal?
YES >> GO TO 18.
NO >> GO TO 14.
14.CHECK STOP LAMP RELAY CIRCUIT (1)
1. Turn the ignition switch OFF.
2. Disconnect stop lamp relay harness connector.
3. Check continuity between ABS actuator and electr ic unit (control unit) harness connector and stop lamp
relay 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 15.
NO >> Repair or replace error-detected parts.
15.CHECK STOP LAMP RELAY
Check stop lamp relay. Refer to BRC-86, "
Component Inspection (Stop Lamp Relay)".
Is the inspection result normal?
YES >> GO TO 16.
NO >> Repair or replace stop lamp relay.
16.CHECK STOP LAMP RELAY POWER SUPPLY (2)
1. Turn the ignition switch OFF.
2. Check voltage between stop lamp relay harness connector and ground.
3. Turn the ignition switch ON. CAUTION:
Never start engine.
4. Check voltage between stop lamp relay harness connector and ground.
Is the inspection result normal?
YES >> Check pin terminals and connection of stop lamp relay harness connector for abnormal condi- tions. Repair or replace error-detected parts.
NO >> GO TO 17.
ABS actuator and electric unit (control unit) —Voltage
Connector Terminal
E36 46 Ground Battery voltage
ABS actuator and electric unit (control unit) Stop lamp relay Continuity
Connector Terminal Connector Terminal
E3646E58 2Existed
ABS actuator and electric unit (control unit) —Continuity
Connector Terminal
E36 46 Ground Not existed
Sto p l am p rela y —Voltage
Connector Terminal
E58 1 Ground Approx. 0 V
Sto p l am p rela y —Voltage
Connector Terminal
E58 1 Ground Battery voltage
Revision: 2010 May2011 QX56

BRC-84
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1116 STOP LAMP SWITCH
17.CHECK STOP LAMP RELAY CIRCUIT (2)
1. Turn the ignition switch OFF.
2. Check 10A fuse (#57).
3. Disconnect IPDM E/R harness connector.
4. Check IPDM E/R pin terminals for dam age or loose connection with harness connector.
5. Check continuity between stop lamp relay harness connector and IPDM E/R harness connector.
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.
18.CHECK STOP LAMP RELAY 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 stop lamp relay harness connector and ground.
Is the inspection result normal?
YES >> GO TO 22.
NO >> GO TO 19.
19.CHECK STOP LAMP RELAY CIRCUIT (3)
1. Turn the ignition switch OFF.
2. Disconnect stop lamp relay harness connector.
3. Check continuity between ABS actuator and electr ic unit (control unit) harness connector and stop lamp
relay 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 20.
Stop lamp relay IPDM E/R Continuity
Connector Terminal Connector Terminal
E581E1559Existed
ABS actuator and electric unit (control unit)
—Voltage
Connector Terminal
E36 37 Ground Approx. 0 V
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 (c ontrol unit) Stop lamp relay
Continuity
Connector Terminal Connector Terminal
E3637E58 5Existed
ABS actuator and electric unit (control unit) —Continuity
Connector Terminal
E36 37 Ground Not existed
Revision: 2010 May2011 QX56