Infiniti QX56 (Z62). Manual — part 1167
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
25
Ground
12
BCM
NATS antenna amp.
Continuity
Connector
Terminal
Connector
Terminal
M68
25
M26
3
Existed
BCM
Ground
Continuity
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.
Ground
Continuity
Connector
Terminal
M26
4
Existed
P1614 CHAIN OF IMMU-KEY
SEC-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
GI-40, "Intermittent Incident"
.
>> INSPECTION END
SEC-60
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2192 ID DISCORD, IMMU-ECM
B2192 ID DISCORD, IMMU-ECM
DTC Logic
INFOID:0000000006226210
DTC DETECTION LOGIC
NOTE:
• If DTC B2192 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B2192 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 DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID: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
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 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
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
B2193 CHAIN OF ECM-IMMU
SEC-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 Logic
INFOID:0000000006226212
DTC DETECTION LOGIC
NOTE:
• If DTC B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
• If DTC B2193 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 DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID: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
>> 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
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