2011 INFINITI QX56 service

B2013 STEERING LOCK UNITSEC-69
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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B2013 STEERING LOCK UNIT
DTC LogicINFOID:0000000006226218
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Lock the steering. NOTE:
3. Press the push-button ignition switch.
4. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-69, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226219
1.PERFORM INITIALIZATION
Perform initialization of BCM and reregistration of all Intelligent Keys using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
Does steering lock operate?
YES >> INSPECTION END
NO >> GO TO 2.
2.REPLACE STEERING LOCK UNIT
1. Replace steering lock unit.
2. Perform the service procedure for steering lock unit replacement. Refer to CONSULT-III Operation Man-
ual NATS-IVIS/NVIS.
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible causeB2013 ID DISCORD BCM-S/L The ID verification results between BCM and
steering lock unit are NG. Steering lock unit
To lock the steering1. Set the selector lever in the P position.
2. Turn the power supply position to the OFF position.
3. Press any door switch.
To unlock the steering 1. Set the selector lever in the P position.
2. Press the push-button ignition switch with brake pedal not depressed.
Revision: 2010 May2011 QX56

B2014 CHAIN OF STRG-IMMUSEC-71
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace harness.
3.CHECK STEERING LOCK UNIT GROUND CIRCUIT
Check continuity between steering lock unit and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK STEERING LOCK UNI T COMMUNICATION SIGNAL
1. Connect steering lock unit connector and BCM connector.
2. Read voltage signal between steering lock unit harness connector and ground.
NOTE:
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 6.
5.REPLACE STEERING LOCK UNIT
1. Replace steering lock unit.
2. Perform the service procedure for steering lock unit replacement. Refer to CONSULT-III Operation Man-
ual NATS-IVIS/NVIS.
Steering lock unit
GroundContinuity
Connector Terminal
M12 7 Not existed
Steering lock unit
GroundContinuity
Connector Terminal
M12 5
Existed
6
(+)
(–) Condition Voltage (V)
(Approx.)
Steering lock unit
Connector Terminal
M12 2 Ground Steering lock unit Lock status 12
Lock or unlock
For 15 seconds after
unlock
12
15 seconds or later
after unlock. 0
To lock the steering 1. Set the selector lever in the P position.
2. Turn the power supply position to the OFF position.
3. Press any door switch.
To unlock the steering 1. Set the selector lever in the P position.
2. Press the push-button ignition switch with brake pedal not depressed.
JMKIA0066GB
Revision: 2010 May2011 QX56

SEC-96
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B2609 STEERING STATUS
NO >> GO TO 2.
2.CHECK IPDM E/R INPUT SIGNAL CIRCUIT
1. Disconnect IPDM E/R connector and steering lock unit connector.
2. Check continuity between IPDM E/R harness connector and steering lock unit harness connector.
3. Check continuity between IP DM E/R harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.REPLACE STEERING LOCK UNIT
1. Replace steering lock unit.
2. Perform the service procedure for steering lock unit replacement. Refer to CONSULT-III Operation Man-
ual NATS-IVIS/NVIS.
>> INSPECTION END
4.CHECK BCM INPUT SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between BCM harness connector and ground.
NOTE:
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 6.
5.REPLACE BCM
1. Replace BCM. Refer to BCS-81, "
Removal and Installation".
2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
IPDM E/R Steering lock unit
Continuity
Connector Terminal Connector Terminal
E17 63
M12 8
Existed
65 3
IPDM E/R GroundContinuity
Connector Terminal
E17 63
Not existed
65
(+)
(–) Condition Voltage (V)
(Approx.)
BCM
Connector Terminal
M71 107
Ground Steering lock unit Lock 0
Unlock 12
108 Lock 12
Unlock 0
To lock the steering 1. Set the selector lever in the P position.
2. Turn the power supply position to the OFF position.
3. Press any door switch.
To unlock the steering 1. Set the selector lever in the P position.
2. Press the push-button ignition switch with brake pedal not depressed.
Revision: 2010 May2011 QX56

B2609 STEERING STATUSSEC-97
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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>> INSPECTION END
6.CHECK BCM INPUT SIGNAL CIRCUIT
1. Disconnect BCM connector and steering lock unit connector.
2. Check continuity between BCM harness connector and steering lock unit harness connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace harness.
7.REPLACE STEERING LOCK UNIT
1. Replace steering lock unit.
2. Perform the service procedure for steering lock unit replacement. Refer to CONSULT-III Operation Man-
ual NATS-IVIS/NVIS.
>> INSPECTION END
BCM Steering lock unit Continuity
Connector Terminal Connector Terminal
M71 107
M12 3
Existed
108 8
BCM GroundContinuity
Connector Terminal
M71 107
Not existed
108
Revision: 2010 May2011 QX56

SEC-98
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B260B STEERING LOCK UNIT
B260B STEERING LOCK UNIT
DTC LogicINFOID:0000000006226247
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Turn ignition switch OFF.
3. Press driver side door switch.
4. Shift selector lever to the P position.
5. Press push-button ignition switch under the following condition.
- Brake pedal: Not depressed
6. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-98, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226248
1.INSPECTION START
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
3. Touch “ERASE”.
4. Perform DTC CONFIRMATION PROCEDURE for DTC B260B. Refer to SEC-98, "
DTC Logic".
Is DTC detected?
YES >> GO TO 2.
NO >> INSPECTION END
2.REPLACE STEERING LOCK UNIT
1. Replace steering lock unit.
2. Perform the service procedure for steering lock unit replacement. Refer to CONSULT-III Operation Man-
ual NATS-IVIS/NVIS.
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible causeB260B STEERING LOCK UNIT BCM detects malfunctioning of steering lock
unit before steering unlocking. Steering lock unit
Revision: 2010 May2011 QX56

B260C STEERING LOCK UNITSEC-99
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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B260C STEERING LOCK UNIT
DTC LogicINFOID:0000000006226249
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Shift selector lever to the P position.
2. Press push-button ignition switch under the following condition.
- Brake pedal: Not depressed
3. Turn ignition switch ON.
4. Turn ignition switch OFF.
5. Press driver side door switch.
6. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-99, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226250
1.INSPECTION START
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
3. Touch “ERASE”.
4. Perform DTC CONFIRMATION PROCEDURE for DTC B260C. Refer to SEC-99, "
DTC Logic".
Is DTC detected?
YES >> GO TO 2.
NO >> INSPECTION END
2.REPLACE STEERING LOCK UNIT
1. Replace steering lock unit.
2. Perform the service procedure for steering lock unit replacement. Refer to CONSULT-III Operation Man-
ual NATS-IVIS/NVIS.
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible causeB260C STEERING LOCK UNIT BCM detects malfunctioning of steering lock
unit before steering locking. Steering lock unit
Revision: 2010 May2011 QX56

SEC-100
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B260D STEERING LOCK UNIT
B260D STEERING LOCK UNIT
DTC LogicINFOID:0000000006226251
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Shift selector lever to the P position.
2. Press push-button ignition switch under the following condition.
- Brake pedal: Not depressed
3. Turn ignition switch ON.
4. Turn ignition switch OFF.
5. Press driver side door switch.
6. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-100, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226252
1.INSPECTION START
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
3. Touch “ERASE”.
4. Perform DTC Confirmation Procedure for DTC B260D. Refer to SEC-100, "
DTC Logic".
Is DTC detected?
YES >> GO TO 2.
NO >> INSPECTION END
2.REPLACE STEERING LOCK UNIT
1. Replace steering lock unit.
2. Perform the service procedure for steering lock unit replacement. Refer to CONSULT-III Operation Man-
ual NATS-IVIS/NVIS.
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible causeB260D STEERING LOCK UNIT BCM detects malfunctioning of steering lock
unit after steering locking. Steering lock unit
Revision: 2010 May2011 QX56

B260F ENGINE STATUSSEC-101
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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B260F ENGINE STATUS
DescriptionINFOID:0000000006226253
BCM receives the engine status signal from ECM via CAN communication.
DTC LogicINFOID:0000000006226254
DTC DETECTION LOGIC
NOTE:
 If DTC B260F is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
BCS-70, "
DTC Logic".
 If DTC B260F is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
BCS-71, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait 2 seconds or more.
2. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-101, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226255
1.INSPECTION START
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
3. Touch “ERASE”.
4. Perform DTC CONFIRMATION PROCEDURE for DTC B260F. Refer to SEC-101, "
DTC Logic".
Is DTC detected?
YES >> GO TO 2.
NO >> INSPECTION END
2.REPLACE ECM
1. Replace ECM. Refer to EC-535, "
Removal and Installation".
2. Perform “ADDITIONAL SERVICE WHEN REPLACING ECM”. Refer to EC-143, "
Work Procedure".
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B260F ENG STATE SIG LOST BCM has not yet received the engine status
signal from ECM when ignition switch is in
the ON position.  Harness or connectors
(CAN communication line is open or
shorted.)
ECM
Revision: 2010 May2011 QX56