INFINITI QX56 2011 Factory Service Manual

SEC-54
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
P1611 ID DISCORD, IMMU-ECM
P1611 ID DISCORD, IMMU-ECM
DTC LogicINFOID:0000000006226204
DTC DETECTION LOGIC
NOTE:
 If DTC P1611 is displayed with DTC U1000 (for BC
M), first perform the trouble diagnosis for DTC U1000.
Refer to BCS-70, "
DTC Logic".
 If DTC P1611 is displayed with DTC U1010 (for BC M), 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.
2. Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-54, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226205
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.
Can the system be initialized and can the engine be started with reregistered Intelligent Key?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK SELF DIAGNOSTIC RESULT
1. Select “Self Diagnostic Result” m ode of “ENGINE” using CONSULT-III.
2. Erase DTC.
3. Perform DTC CONFIRMATION PROCEDURE for DTC P1611. Refer to SEC-54, "
DTC Logic".
Is DTC detected?
YES >> GO TO 3.
NO >> INSPECTION END
3.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.
Can the system be initialized and can the engi ne be started with registered Intelligent Key?
YES >> INSPECTION END
NO >> GO TO 4.
4.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
P1611 ID DISCORD, IMMU-ECM The ID verification results between BCM
and ECM are NG.  Harness or connectors
(The CAN communication line is open
or shorted.)
BCM
ECM
Revision: 2010 May2011 QX56

P1612 CHAIN OF ECM-IMMUSEC-55
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
SEC
N
O P
P1612 CHAIN OF ECM-IMMU
DTC LogicINFOID:0000000006226206
DTC DETECTION LOGIC
NOTE:
 If DTC P1612 is displayed with DTC U1000 (for BC M), first perform the trouble diagnosis for DTC U1000.
Refer to BCS-70, "
DTC Logic".
 If DTC P1612 is displayed with DTC U1010 (for BC M), 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.
2. Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-55, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226207
1.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.
Can the system be initialized and can the engine be started with registered Intelligent Key?
YES >> INSPECTION END
NO >> GO TO 2.
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
P1612 CHAIN OF ECM-IMMU Inactive communication between ECM
and BCM  Harness or connectors
(The CAN communication line is open or
shorted.)
BCM
ECM
Revision: 2010 May2011 QX56

SEC-56
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
P1614 CHAIN OF IMMU-KEY
P1614 CHAIN OF IMMU-KEY
DTC LogicINFOID:0000000006226208
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE 1
1. Contact Intelligent Key backside to push-button ignition switch.
2. Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-56, "Diagnosis Procedure".
NO >> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE 2
1. Press the push-button ignition switch.
2. Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-56, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226209
1.CHECK FUSE
1. Turn ignition switch OFF.
2. Check that the following fuse in IPDM E/R is not blown.
Is the fuse fusing?
YES >> Replace the blown fuse after repairing the cause of blowing.
NO >> GO TO 2.
2.CHECK NATS ANTENNA AMP. POWER SUPPLY
1. Disconnect NATS antenna amp. connector.
2. Check voltage between NATS antenna amp. harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK NATS ANTENNA AMP. POWER SUPPLY CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R har ness connector and NATS antenna amp. connector.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1614 CHAIN OF IMMU-KEY Inactive communication between NATS
antenna amp. and BCM  Harness or connectors
(NATS antenna amp. circuit is open or
shorted.)
 NATS antenna amp.
 IPDM E/R
Signal name Fuse No.
Battery power supply 43
(+) (–)Voltage (V)
(Approx.)
NATS antenna amp.
Connector Terminal M26 1 Ground Battery voltage
Revision: 2010 May2011 QX56

P1614 CHAIN OF IMMU-KEYSEC-57
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
SEC
N
O P
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.
4.CHECK NATS ANTENNA AMP. OUTPUT SIGNAL 1
1. Connect NATS antenna amp. connector.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5.CHECK NATS ANTENNA AMP. OUTPUT SIGNAL CIRCUIT 1
1. Disconnect NATS antenna amp. connector.
2. Check continuity between BCM harness connector and NATS antenna amp. connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> Replace NATS antenna amp. Refer to SEC-155, "Removal and Installation".
NO >> Repair or replace harness.
6.CHECK NATS ANTENNA AMP. COMMUNICATION SIGNAL 1
1. Connect BCM connector.
2. Check voltage between BCM harness connector and ground using analog tester.
Is the inspection result normal?
IPDM E/R NATS antenna amp. Continuity
Connector Terminal Connector Terminal
E14 42 M26 1 Existed
IPDM E/R GroundContinuity
Connector Terminal
E14 42 Not existed
(+) (–)Voltage (V)
(Approx.)
BCM
Connector Terminal M68 21 Ground 12
BCM NATS antenna amp. Continuity
Connector Terminal Connector Terminal
M6821M26 2Existed
BCM GroundContinuity
Connector Terminal
M68 21 Not existed
(+) (–) Condition Voltage (V)
(Approx.)
BCM
Connector Terminal
M68 21 Ground Contact Intelligent Key backside to
push-button ignition switch, then turn
ignition switch ON.Just after pressing push-button ignition
switch, pointer of analog tester should
move.
Revision: 2010 May2011 QX56

SEC-58
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
P1614 CHAIN OF IMMU-KEY
YES >> GO TO 7.
NO >> Replace NATS antenna amp. Refer to
SEC-155, "
Removal and Installation".
7.CHECK NATS ANTENNA AMP. OUTPUT SIGNAL 2
1. Disconnect BCM connector.
2. Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 8.
8.CHECK NATS ANTENNA AMP. OUTPUT SIGNAL CIRCUIT 2
1. Disconnect NATS antenna amp. connector.
2. Check continuity between BCM harness connector and NATS antenna amp. connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> Replace NATS antenna amp. Refer to SEC-155, "Removal and Installation".
NO >> Repair or replace harness.
9.CHECK NATS ANTENNA AMP. COMMUNICATION SIGNAL 2
1. Connect BCM connector.
2. Check voltage between BCM harness connector and ground using analog tester.
Is the inspection result normal?
YES >> GO TO 10.
NO >> Replace NATS antenna amp. Refer to SEC-155, "
Removal and Installation".
10.CHECK NATS ANTENNA AMP. GROUND CIRCUIT
1. Disconnect NATS antenna amp. connector.
2. Check continuity between NATS antenna amp. harness connector and ground.
Is the inspection result normal?
(+) (–)Voltage (V)
(Approx.)
BCM
Connector Terminal M68 25Ground12
BCM NATS antenna amp. Continuity
Connector Terminal Connector Terminal
M6825M26 3Existed
BCM GroundContinuity
Connector Terminal
M68 25 Not existed
(+) (–) Condition Voltage (V)
(Approx.)
BCM
Connector Terminal
M68 25 Ground Contact Intelligent Key backside to
push-button ignition switch, then turn
ignition switch ON.Just after pressing push-button ignition
switch, pointer of analog tester should
move.
NATS antenna amp.
GroundContinuity
Connector Terminal
M26 4 Existed
Revision: 2010 May2011 QX56

P1614 CHAIN OF IMMU-KEYSEC-59
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
SEC
N
O P
YES >> GO TO 11.
NO >> Repair or replace harness.
11 .CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Revision: 2010 May2011 QX56

SEC-60
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B2192 ID DISCORD, IMMU-ECM
B2192 ID DISCORD, IMMU-ECM
DTC LogicINFOID:0000000006226210
DTC DETECTION LOGIC
NOTE:
 If DTC B2192 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
BCS-70, "
DTC Logic".
 If DTC B2192 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.
2. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-60, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226211
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.
Can the system be initialized and can the engine be started with reregistered Intelligent Key?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK SELF-DIAGNOSIS RESULT
1. Select “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
2. Erase DTC.
3. Perform DTC CONFIRMATION PROCEDURE for DTC B2192. Refer to SEC-60, "
DTC Logic".
Is DTC detected?
YES >> GO TO 3.
NO >> INSPECTION END
3.REPLACE BCM
1. Replace BCM. Refer to BCS-81, "
Removal and Installation".
2. 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.
Can the system be initialized and can the engi ne be started with registered Intelligent Key?
YES >> INSPECTION END
NO >> GO TO 4.
4.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
B2192 ID DISCORD BCM-ECM The ID verification results between
BCM and ECM are NG. Harness or connectors
(The CAN communication line is open
or shorted.)
BCM
ECM
Revision: 2010 May2011 QX56

B2193 CHAIN OF ECM-IMMUSEC-61
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
SEC
N
O P
B2193 CHAIN OF ECM-IMMU
DTC LogicINFOID:0000000006226212
DTC DETECTION LOGIC
NOTE:
 If DTC B2193 is displayed with DTC U1000, first per form the trouble diagnosis for DTC U1000. Refer to
BCS-70, "
DTC Logic".
 If DTC B2193 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. Turn ignition switch ON.
2. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-61, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226213
1.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.
Can the system be initialized and can the engine be started with registered Intelligent Key?
YES >> INSPECTION END
NO >> GO TO 2.
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
B2193 CHAIN OF BCM-ECM Inactive communication between BCM
and ECM  Harness or connectors
(The CAN communication line is open or
shorted.)
BCM
ECM
Revision: 2010 May2011 QX56

SEC-62
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B2195 ANTI-SCANNING
B2195 ANTI-SCANNING
DTC LogicINFOID:0000000006226214
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES >> Refer to SEC-62, "Diagnosis Procedure".
NO >> INSPECTION END.
Diagnosis ProcedureINFOID:0000000006226215
1.CHECK SELF DIAGNOSTIC RESULT 1
1. Select “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
2. Erase DTC.
3. Perform DTC CONFIRMATION PROCEDURE for DTC B2195. Refer to SEC-62, "
DTC Logic".
Is DTC detected?
YES >> GO TO 2.
NO >> INSPECTION END
2.CHECK EQUIPMENT OF THE VEHICLE
Check that unspecified accessory part re lated to engine start is not installed.
Is unspecified accessory part related to engine start installed?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK SELF DIAGNOSTIC RESULT 2
1. Obtain the customers approval to remove unspecif ied accessory part related to engine start, and then
remove it.
2. Select “Self Diagnostic Result” of “BCM” using CONSULT-III.
3. Erase DTC.
4. Perform DTC CONFIRMATION PROCEDURE for DTC B2195. Refer to SEC-62, "
DTC Logic".
Is DTC detected?
YES >> GO TO 4.
NO >> INSPECTION END
4.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.
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause B2195 ANTI-SCANNING ID verification between BCM and ECM that is
out of the specified specification is detected. ID verification request out of the
specified specification
Revision: 2010 May2011 QX56

B2196 DONGLE UNITSEC-63
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
SEC
N
O P
B2196 DONGLE UNIT
DescriptionINFOID:0000000006226660
BCM performs ID verification between BCM and dongle unit.
When verification result is OK, BCM permits cranking.
DTC LogicINFOID:0000000006226661
DTC DETECTION LOGIC
NOTE:
 If DTC B2196 is displayed with DTC U1000, first per form the trouble diagnosis for DTC U1000. Refer to
BCS-70, "
DTC Logic".
 If DTC B2196 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. Turn ignition switch ON.
2. Turn ignition switch OFF.
3. Turn ignition switch ON.
4. Check “Self-diagnosis result” using CONSULT-III.
Is the DTC detected?
YES >> Refer to SEC-63, "Diagnosis Procedure".
NO >> INSPECTION END.
Diagnosis ProcedureINFOID:0000000006226662
1.PERFORM INITIALIZATION
1. 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.
2. Start the engine.
Dose the engine start?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK DONGLE UNIT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and dongle unit connector.
3. Check continuity between BCM harness connector and dongle unit harness connector.
4. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B2196 DONGLE NG The ID verification results between BCM
and dongle unit is NG.  Harness or connectors
(Dongle unit circuit is open or shorted.)
 Dongle unit
BCM Dongle unit Continuity
Connector Terminal Connector Terminal
M68 24 M142 7 Existed
BCM GroundContinuity
Connector Terminal
M68 24 Not existed
Revision: 2010 May2011 QX56