ground INFINITI QX56 2011 Factory Service Manual

B210A STEERING LOCK UNITSEC-129
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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B210A STEERING LOCK UNIT
DTC LogicINFOID:0000000006226290
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 “IPDM E/R” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-129, "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. CCheck DTC in “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-129, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226291
1.CHECK IPDM E/R INPUT SIGNAL
1. Turn ignition switch OFF.
2. 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. 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.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B210A STRG LCK STATE SW IPDM E/R detects the difference between
steering condition switches 1 and 2 signals
for 1 second.  Harness or connectors
(Steering lock unit circuit is open or
shorted.)
 Steering lock unit
 IPDM E/R
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
Revision: 2010 May2011 QX56

SEC-130
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B210A STEERING LOCK UNIT
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
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
Revision: 2010 May2011 QX56

SEC-134
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B210E STARTER RELAY
B210E STARTER RELAY
DTC LogicINFOID:0000000006226298
DTC DETECTION LOGIC
NOTE:
 If DTC B210E is displayed with DTC U1000, first
perform the trouble diagnosis for DTC U1000. Refer to
PCS-28, "
DTC Logic".
 If DTC B210E is displayed with DTC B2605, first perform the trouble diagnosis for DTC B2605. Refer to
SEC-91, "
DTC Logic".
 When IPDM E/R power supply voltage is low (Approx. 7 - 8 V for about 1 second), the DTC B210E may be
detected.
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Press push-button ignition switch under the followi ng conditions to start engine, and wait 1 second or
more.
- Selector lever: In the P position
- Brake pedal: Depressed
2. Check DTC in “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-134, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226299
1.CHECK STARTER RELAY OUTPUT SIGNAL
1. Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK STARTER RELAY OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Disconnect IPDM E/R connector.
4. Check continuity between BCM harness connector and IPDM E/R harness connector.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B210E STARTER RELAY OFF When comparing the following items, IPDM E/R
detects that starter relay is stuck in the OFF posi-
tion for 1 second or more.
 Starter control relay
signal (CAN) from BCM
 Starter relay status signal (CAN) from BCM
 Starter control relay an d starter relay status
signal (IPDM E/R input)
 Starter control relay co ntrol signal (IPDM E/R
output)
 P/N position signal input  Harness or connector
(CAN communication line is open or
shorted.)
 Harness or connector (Starter relay circuit is open or
shorted.)
IPDM E/R
BCM
 Battery
(+)
(–) Condition
Voltage (V)
(Approx.)
BCM
Connector Terminal Ignition switch Brake pedal Selector lever
M71 97 Ground ON Depressed P or N 12
Other than above 0
Revision: 2010 May2011 QX56

B210E STARTER RELAYSEC-135
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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5. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> Repair or replace harness.
3.CHECK STARTER RELAY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check voltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Check harness for open or short bet ween IPDM E/R and battery. Refer to STR-7, "
Wiring Dia-
gram".
4.REPLACE BCM
1. Replace BCM. Refer to BCS-81, "
Removal and Installation".
2. Perform DTC CONFIRMATION PROCEDIURE for DTC B210E. Refer to SEC-134, "
DTC Logic".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace IPDM E/R. Refer to PCS-32, "
Removal and Installation".
BCM IPDM E/R
Continuity
Connector Terminal Connector Terminal
M71 97 E13 30 Existed
BCM GroundContinuity
Connector Terminal
M71 97 Not existed
(+) (–)Voltage (V)
(Approx.)
IPDM E/R
Connector Terminal E10 4 Ground Battery voltage
Revision: 2010 May2011 QX56

SEC-136
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B210F SHIFT POSITION/CLUTCH INTERLOCK SWITCH
B210F SHIFT POSITION/CLUTCH INTERLOCK SWITCH
DTC LogicINFOID:0000000006226300
DTC DETECTION LOGIC
NOTE:
If DTC B210F is displayed with DTC U1000, first
perform the trouble diagnosis for DTC U1000. Refer to PCS-
28, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Shift selector lever to the P position.
2. Turn ignition switch ON and wait 1 second or more.
3. Shift selector lever to the N position and wait 1 second or more.
4. Shift 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 “IPDM E/R” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-136, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226301
1.CHECK DTC OF BCM
Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Perform the trouble diagnosis relat ed to the detected DTC. Refer to BCS-57, "DTCIndex".
NO >> GO TO 2.
2.CHECK DTC OF TCM
Check DTC in “Self Diagnostic Result ” mode of “TCM” using CONSULT-III.
Is DTC detected?
YES >> Perform the trouble diagnosis relat ed to the detected DTC. Refer to TM-78, "DTC Index".
NO >> GO TO 3.
3.CHECK IPDM E/R SIGNAL CIRCUIT OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Disconnect A/T assembly connector.
4. Check continuity between IPDM E/R harnes s connector and A/T assembly harness connector.
5. Check continuity between IP DM E/R harness connector and ground.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B210F INTER LOCK/PNP SW ON There is a difference between P/N position
signal from TCM and P/N position signal from
BCM (CAN).  Harness or connectors
(CAN communication line is open or
shorted.)
 Harness or connectors (TCM circuit is open or shorted.)
 A/T assembly (TCM)
 IPDM E/R
BCM
IPDM E/R A/T assembly Continuity
Connector Terminal Connector Terminal
E15 48 F51 9 Existed
Revision: 2010 May2011 QX56

B210F SHIFT POSITION/CLUTCH INTERLOCK SWITCHSEC-137
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> Repair or replace harness.
(+)
(–) Continuity
IPDM E/R
Connector Terminal E15 48 Ground Not existed
Revision: 2010 May2011 QX56

SEC-138
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B2110 SHIFT POSITION/CLUTCH INTERLOCK SWITCH
B2110 SHIFT POSITION/C
LUTCH INTERLOCK SWITCH
DTC LogicINFOID:0000000006226302
DTC DETECTION LOGIC
NOTE:
If DTC B2110 is displayed with DTC U1000, first per form the trouble diagnosis for DTC U1000. Refer to PCS-
28, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Shift selector lever to the P position.
2. Turn ignition switch ON and wait 1 second or more.
3. Shift selector lever to the N position and wait 1 second or more.
4. Shift 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 “IPDM E/R” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-138, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226303
1.CHECK DTC OF BCM
Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Perform the trouble diagnosis relat ed to the detected DTC. Refer to BCS-57, "DTCIndex".
NO >> GO TO 2.
2.CHECK DTC OF TCM
Check DTC in “Self Diagnostic Result ” mode of “TCM” using CONSULT-III.
Is DTC detected?
YES >> Perform the trouble diagnosis relat ed to the detected DTC. Refer to TM-78, "DTC Index".
NO >> GO TO 3.
3.CHECK IPDM E/R SIGNAL CIRCUIT OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Disconnect A/T assembly connector.
4. Check continuity between IPDM E/R harnes s connector and A/T assembly harness connector.
5. Check continuity between IP DM E/R harness connector and ground.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B2110 INTER LOCK/PNP SW OFF There is a difference between P/N position
signal from TCM and P/N position signal from
BCM (CAN).  Harness or connectors
(CAN communication line is open or
shorted.)
 Harness or connectors (TCM circuit is open or shorted.)
 A/T assembly (TCM)
IPDM E/R
BCM
IPDM E/R A/T assembly Continuity
Connector Terminal Connector Terminal
E15 48 F51 9 Existed
Revision: 2010 May2011 QX56

B2110 SHIFT POSITION/CLUTCH INTERLOCK SWITCHSEC-139
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> Repair or replace harness.
(+)
(–) Continuity
IPDM E/R
Connector Terminal E15 48 Ground Not existed
Revision: 2010 May2011 QX56

HOOD SWITCHSEC-141
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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HOOD SWITCH
Component Function CheckINFOID:0000000006226305
1.CHECK FUNCTION
1. Select “HOOD SW” in “Data Monitor” m ode of “IPDM E/R” using CONSULT-III.
2. Check “HOOD SW” indication under the following condition.
Is the indication normal?
YES >> Hood switch is OK.
NO >> Go to SEC-141, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000006226306
1.CHECK HOOD SWITCH SIGNAL CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect hood switch connector.
3. Check voltage between hood switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK HOOD SWITCH SIGNAL CIRCUIT 2
1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R har ness connector and hood switch harness connector.
3. Check continuity 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 >> Repair or replace harness.
3.CHECK HOOD SWITCH GROUND CIRCUIT
Check continuity between hood switch harness connector and ground.
Monitor item Condition Indication
HOOD SW Hood Open ON
Close OFF
(+) (–)Voltage (V)
(Approx.)
Hood switch
Connector Terminal E57 1 Ground 12
IPDM E/R Hood switch Continuity
Connector Terminal Connector Terminal
E13 32 E57 1 Existed
IPDM E/R GroundContinuity
Connector Terminal
E13 32 Not existed
Hood switch GroundContinuity
Connector Terminal
E57 2 Existed
Revision: 2010 May2011 QX56

HORN FUNCTIONSEC-143
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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HORN FUNCTION
Component Function CheckINFOID:0000000006226308
1.CHECK FUNCTION 1
1. Disconnect vehicle security horn relay.
2. Perform “VEHICLE SECURITY HORN” in “ACTIVE TEST” mode of “THEFT ALM” of “BCM” using CON\
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SULT-III.
3. Check the horn operation.
Is the operation normal?
YES >> GO TO 2.
NO >> Go to SEC-143, "
DiagnosisProcedure".
2.CHECK FUNCTION 2
1. Reconnect vehicle security horn relay.
2. Disconnect horn relay.
3. Perform “VEHICLE SECURITY HORN” in “ACTIVE TEST” mode of “THEFT ALM” of “BCM” using CON\
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SULT-III.
4. Check the horn operation.
Is the operation normal?
YES >> INSPECTION END
NO >> Go to SEC-143, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000006226309
1.INSPECTION START
Perform inspection in accordance with procedure that confirms malfunction.
Which procedure confirms malfunction?
Component Function Check 1>>GO TO 2.
Component Function Check 2>>GO TO 4.
2.CHECK HORN FUNCTION
Check that horns function properly using horn switch.
Do horns sound?
YES >> GO TO 3.
NO >> Check horn circuit. Refer to HRN-3, "
Wiring Diagram".
3.CHECK HORN CONTROL CIRCUIT
1. Disconnect horn relay.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R har ness connector and horn relay harness connector.
4. Check continuity between IPDM E/R harness connector and ground.
Test item Description
VEHICLE SECURITY HORN ON Horn Sounds (for 0.5 sec)
Test item Description
VEHICLE SECURITY HORN ON Vehicle security horn Sounds (for 0.5 sec)
IPDM E/R Horn relay Continuity
Connector Terminal Connector Terminal
E13 34 E5 1 Existed
Revision: 2010 May2011 QX56