2011 INFINITI QX56 Factory Service Manual

instrument cluster service indicator driver seat adjustment window child restraint spare tire

Page 4697 of 5598

INFINITI QX56 2011 Factory Service Manual
SEC-90
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B2604 SHIFT POSITION
For initialization and registration procedures, refer
to CONSULT-III Operation Manual NATS-IVIS/NVIS.
>> INSPECTION

Page 4698 of 5598

INFINITI QX56 2011 Factory Service Manual
B2605 SHIFT POSITIONSEC-91
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
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B2605 SHIFT POSITION
DTC LogicINFOID:0000000006226241
DTC DETECTION LOGIC
NOTE:

B2605 SHIFT POSITIONSEC-91
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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B2605 SHIFT POSITION
DTC LogicINFOID:0000000006226241
DTC DETECTION LOGIC
NOTE:
If DTC B2605 is displayed with DTC U1000, first per form the trouble diagnosis for DTC U1000. Refer to
BCS-70, "
DTC Logic".
If DTC B2605 is displayed with DTC U1010, first per form the trouble diagnosis for DTC U1010. Refer to
BCS-71, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Shift the selector lever to the P position.
2. Turn ignition switch ON and wait 1 second or more.
3. Shift the selector lever to the N position and wait 1 second or more.
4. Shift the selector lever to any position other than P and N, and wait 1 second or more.
5. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-91, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226242
1.CHECK IPDM E/R INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Turn ignition switch ON.
4. Check voltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> GO TO 2.
2.CHECK IPDM E/R INPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between IPDM E/R harness connector and BCM harness connector.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B2605 PNP/CLUTCH SW When ignition switch is ON, P/N position
signal input from TCM and P/N position
signal (CAN) input from IPDM E/R do not
match. Harness or connectors
(CAN communication line is open or
shorted.)
Harness or connectors (TCM circuit is open or shorted.)
IPDM E/R
BCM
(+)
(–) Condition Voltage (V)
(Approx.)
IPDM E/R
Connector Terminal
E15 48 Ground Selector lever P or N position 12
Other than above 0
IPDM E/R BCM Continuity
Connector Terminal Connector Terminal
E15 48 M71 102 Existed
Revision: 2010 May2011 QX56

Page 4699 of 5598

INFINITI QX56 2011 Factory Service Manual
SEC-92
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B2605 SHIFT POSITION
4. Check continuity between IP
DM E/R harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.

Page 4700 of 5598

INFINITI QX56 2011 Factory Service Manual
B2608 STARTER RELAYSEC-93
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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B2608 STARTER RELAY
DTC LogicINFOID:0000000006226243
DTC DETECTION LOGIC
NOTE:
If

B2608 STARTER RELAYSEC-93
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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B2608 STARTER RELAY
DTC LogicINFOID:0000000006226243
DTC DETECTION LOGIC
NOTE:
If DTC B2608 is displayed with DTC U1000, first per form the trouble diagnosis for DTC U1000. Refer to
BCS-70, "
DTC Logic".
If DTC B2608 is displayed with DTC U1010, first per form the trouble diagnosis for DTC U1010. Refer to
BCS-71, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Press push-button ignition switch under the following conditions to start engine.
- Selector lever: In the P position
- Brake pedal: Depressed
2. Wait 1 second after engine started.
3. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-93, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226244
1.CHECK DTC OF IPDM E/R
Check DTC in “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT-III.
Is DTC detected?
YES >> Perform the trouble diagnosis rela ted to the detected DTC. Refer to PCS-22, "DTCIndex".
NO >> GO TO 2.
2.CHECK BCM POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK STARTER RELAY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Disconnect BCM connector.
4. Check continuity between IPDM E/R harness connector and BCM harness connector.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B2608 STARTER RELAY BCM outputs starter motor relay OFF signal
but BCM receives star
ter motor relay ON
signal from IPDM E/R (CAN). Harness or connectors
(CAN communication line is open or
shorted.)
Harness or connectors (Starter relay circuit is open or shorted.)
IPDM E/R
(+)
(–) Condition Voltage (V)
(Approx.)
BCM
Connector Terminal
M71 97 Ground Selector lever N or P position 12
Other than above 0
Revision: 2010 May2011 QX56

Page 4701 of 5598

INFINITI QX56 2011 Factory Service Manual
SEC-94
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B2608 STARTER RELAY
5. Check continuity between IP
DM E/R harness connector and ground.
Is the inspection result normal?
YES >> Replace I

Page 4702 of 5598

INFINITI QX56 2011 Factory Service Manual
B2609 STEERING STATUSSEC-95
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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B2609 STEERING STATUS
DTC LogicINFOID:0000000006226245
DTC DETECTION LOGIC
DTC CO

B2609 STEERING STATUSSEC-95
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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B2609 STEERING STATUS
DTC LogicINFOID:0000000006226245
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE 1
1. Press push-button ignition switch under the fo llowing conditions and wait 1 second or more.
- Selector lever: In the P position
- Brake pedal: Not depressed
2. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-95, "Diagnosis Procedure".
NO >> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE 2
1. Turn ignition switch ON.
2. Turn ignition switch OFF.
3. Press driver side door switch and wait 1 second or more.
4. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-95, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226246
1.CHECK IPDM E/R INPUT SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between IPDM E/R harness connector and ground.
NOTE:
Is the inspection result normal?
YES >> GO TO 4.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause B2609 S/L STATUS BCM detects one of the following status.
Combination of steering lock state switch and
steering unlock state switch is not normal.
Combination of steering lock state switch and steering unlock state switch is different from
steering lock/unlock state that BCM recognizes. Harness or connectors
(Steering lock unit circuit is open or
shorted.)
Steering lock unit
BCM
(+)
(–) Condition Voltage (V)
(Approx.)
IPDM E/R
Connector Terminal
E17 63
Ground Steering lock unit Lock 12
Unlock 0
65 Lock 0
Unlock 12
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

Page 4703 of 5598

INFINITI QX56 2011 Factory Service Manual
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 connec

Page 4704 of 5598

INFINITI QX56 2011 Factory Service Manual
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 an

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