Infiniti QX56 (JA60). Manual — part 849
SEC-42
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
P1611 ID DISCORD, IMMU-ECM
P1611 ID DISCORD, IMMU-ECM
Description
INFOID:0000000005197366
BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with
ECM if ignition switch is turned ON and starts the engine if the ID is OK. ECM prevents the engine from start-
ing if the ID is not registered.
DTC Logic
INFOID:0000000005197367
DTC DETECTION LOGIC
NOTE:
• If DTC P1611 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B1611 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005197368
1.
PERFORM INITIALIZATION
Perform initialization with CONSULT-III. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to “CONSULT-III Operation Manual”.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES
>> ID was unregistered.
NO
>> GO TO 2
2.
PEPLACE BCM
1. Replace BCM. Refer to
BCS-59, "Removal and Installation"
.
2. Perform initialization with CONSULT-III. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to “CONSULT-III Operation Manual”.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES
>> BCM is malfunctioning.
NO
>> GO TO 3
3.
PEPLACE ECM
1. Replace ECM. Refer to Removal and Installation.
2. Perform initialization with CONSULT-III. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to “CONSULT-III Operation Manual”.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES
>> ECM is malfunctioning.
NO
>> GO TO 4
4.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
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. The registration is necessary.
• BCM
• ECM
P1611 ID DISCORD, IMMU-ECM
SEC-43
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
>> Inspection End.
SEC-44
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
P1612 CHAIN OF ECM-IMMU
P1612 CHAIN OF ECM-IMMU
Description
INFOID:0000000005197369
BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with
ECM if ignition switch is turned ON and starts the engine if the ID is OK. ECM prevents the engine from start-
ing if the ID is not registered.
DTC Logic
INFOID:0000000005197370
DTC DETECTION LOGIC
NOTE:
• If DTC P1612 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC P1612 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005197371
1.
REPLACE BCM
1. Replace BCM. Refer to
BCS-59, "Removal and Installation"
.
2. Perform initialization with CONSULT-III.
For initialization, refer to “CONSULT-III Operation Manual”.
Does the engine start?
YES
>> BCM was malfunctioning.
NO
>> ECM is malfunctioning.
• Replace ECM.
• Perform ECM re-communicating function.
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 short)
• BCM
• ECM
P1614 CHAIN OF IMMU-KEY
SEC-45
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
P1614 CHAIN OF IMMU-KEY
Description
INFOID:0000000005197372
Performs ID verification through BCM and NATS antenna amplifier when ignition knob switch is pressed.
Prohibits the release of steering lock or start of engine when an unregistered ID of mechanical key is used.
DTC Logic
INFOID:0000000005197373
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Insert mechanical key into the key cylinder.
2. Press the ignition knob switch.
3. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005197374
Regarding Wiring Diagram information, refer to
SEC-80, "Wiring Diagram - IVIS"
1.
CHECK NATS ANTENNA AMP. INSTALLATION
Check NATS antenna amp. installation. Refer to
SEC-120, "Removal and Installation"
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Reinstall NATS antenna amp. correctly.
2.
CHECK IVIS (NATS) IGNITION KEY ID CHIP
Start engine with another registered NATS ignition key.
Does the engine start?
YES
>> • Ignition key ID chip is malfunctioning.
• Replace the ignition key.
• Perform initialization with CONSULT-III.
For initialization, refer to “CONSULT-III Operation Manual”.
NO
>> GO TO 3
3.
CHECK POWER SUPPLY FOR NATS ANTENNA AMP.
1. Turn ignition switch ON.
2. Check voltage between NATS antenna amp. connector M21 terminal 1 and ground.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
P1614
CHAIN OF IMMU-
KEY
• Inactive communication between NATS antenna
amp. and BCM.
• Mechanical key is malfunctioning.
• Harness or connectors
(The NATS antenna amp. circuit is
open or shorted)
• Mechanical key
• NATS antenna amp.
• BCM
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