Infiniti QX56 (Z62). Manual — part 907
LAN
TCM BRANCH LINE CIRCUIT
LAN-205
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
TCM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006256376
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
-
A/T assembly
-
Harness connector F1
-
Harness connector E7
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of A/T assembly.
2.
Check the resistance between the A/T assembly harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the TCM branch line.
3.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Remove the joint connector. Refer to
TM-182, "Removal and Installation"
2.
Check the continuity between the A/T assembly harness connector side and the TCM harness connector
side of the joint connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace the joint connector.
4.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the TCM. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the control valve & TCM. Refer to
TM-182, "Removal and Installation"
YES (Past error)>>Error was detected in the TCM branch line.
NO
>> Repair the power supply and the ground circuit.
A/T assembly harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
F51
3
8
Approx. 54 – 66
A/T assembly harness connector side
TCM harness connector side
Continuity
Terminal No.
Terminal No.
3
3
Existed
8
8
Existed
LAN-206
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
A-BAG BRANCH LINE CIRCUIT
A-BAG BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006256377
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes
or more. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con-
nection (unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the main harness.
2.
CHECK AIR BAG DIAGNOSIS SENSOR UNIT
Check the air bag diagnosis sensor unit. Refer to
Is the inspection result normal?
YES
>> Replace the main harness.
NO
>> Replace parts whose air bag system has a malfunction.
LAN
AFS BRANCH LINE CIRCUIT
LAN-207
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
AFS BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006256378
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the AFS control unit for damage, bend and loose connection (unit
side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of AFS control unit.
2.
Check the resistance between the AFS control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the AFS control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AFS control unit. Refer to
.
Is the inspection result normal?
YES (Present error)>>Replace the AFS control unit. Refer to
EXL-135, "Removal and Installation"
.
YES (Past error)>>Error was detected in the AFS control unit branch line.
NO
>> Repair the power supply and the ground circuit.
AFS control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M135
30
7
Approx. 54 – 66
LAN-208
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
AV BRANCH LINE CIRCUIT
AV BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006256379
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
-
AV control unit
-
Harness connector M222
-
Harness connector M119
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of AV control unit.
2.
Check the resistance between the AV control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the AV control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AV control unit. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the AV control unit. Refer to
AV-212, "Removal and Installation"
YES (Past error)>>Error was detected in the AV control unit branch line.
NO
>> Repair the power supply and the ground circuit.
AV control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M210
90
74
Approx. 54 – 66
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