Infiniti QX56 (Z62). Manual — part 1166
SEC-54
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
P1611 ID DISCORD, IMMU-ECM
P1611 ID DISCORD, IMMU-ECM
DTC Logic
INFOID:0000000006226204
DTC DETECTION LOGIC
NOTE:
• If DTC P1611 is displayed with DTC U1000 (for BCM), first perform the trouble diagnosis for DTC U1000.
.
• If DTC P1611 is displayed with DTC U1010 (for BCM), first perform the trouble diagnosis for DTC U1010.
.
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
NO
>> INSPECTION END
Diagnosis Procedure
INFOID: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” mode of “ENGINE” using CONSULT-III.
2.
Erase DTC.
3.
Perform DTC CONFIRMATION PROCEDURE for DTC P1611. Refer to
.
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 engine 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
>> 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
P1612 CHAIN OF ECM-IMMU
SEC-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 Logic
INFOID:0000000006226206
DTC DETECTION LOGIC
NOTE:
• If DTC P1612 is displayed with DTC U1000 (for BCM), first perform the trouble diagnosis for DTC U1000.
.
• If DTC P1612 is displayed with DTC U1010 (for BCM), first perform the trouble diagnosis for DTC U1010.
.
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
NO
>> INSPECTION END
Diagnosis Procedure
INFOID: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
>> 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
SEC-56
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
P1614 CHAIN OF IMMU-KEY
P1614 CHAIN OF IMMU-KEY
DTC Logic
INFOID: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
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
NO
>> INSPECTION END
Diagnosis Procedure
INFOID: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 harness 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
P1614 CHAIN OF IMMU-KEY
SEC-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
Ground
Continuity
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
M68
21
M26
2
Existed
BCM
Ground
Continuity
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.
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