Infiniti QX56 (JA60). Manual — part 669
LAN
ICC BRANCH LINE CIRCUIT
LAN-75
< COMPONENT DIAGNOSIS >
[CAN]
C
D
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B
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ICC BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000005146482
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 ICC 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 ICC unit.
2. Check the resistance between the ICC unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the ICC unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ICC unit. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the ICC unit. Refer to
YES (Past error)>>Error was detected in the ICC unit branch line.
NO
>> Repair the power supply and the ground circuit.
ICC unit harness connector
Resistance (
Ω)
Connector No.
Terminal No.
B13
14
5
Approx. 54 – 66
LAN-76
< COMPONENT DIAGNOSIS >
[CAN]
ADP BRANCH LINE CIRCUIT
ADP BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000005146483
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).
-
Driver seat control unit
-
Harness connector B200
-
Harness connector B37
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 driver seat control unit.
2. Check the resistance between the driver seat control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the driver seat control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the driver seat control unit. Refer to
CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the driver seat control unit. Refer to
ADP-174, "Removal and Installation"
YES (Past error)>>Error was detected in the driver seat control unit branch line.
NO
>> Repair the power supply and the ground circuit.
Driver seat control unit harness connector
Resistance (
Ω)
Connector No.
Terminal No.
B202
3
19
Approx. 54 – 66
LAN
AV BRANCH LINE CIRCUIT
LAN-77
< COMPONENT DIAGNOSIS >
[CAN]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
AV BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000005146484
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 AV 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 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-169, "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.
M45
96
97
Approx. 54 – 66
LAN-78
< COMPONENT DIAGNOSIS >
[CAN]
BCM BRANCH LINE CIRCUIT
BCM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000005146485
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 BCM 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 BCM.
2. Check the resistance between the BCM harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the BCM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the BCM. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the BCM. Refer to
BCS-59, "Removal and Installation"
.
YES (Past error)>>Error was detected in the BCM branch line.
NO
>> Repair the power supply and the ground circuit.
BCM harness connector
Resistance (
Ω)
Connector No.
Terminal No.
M18
39
40
Approx. 54 – 66
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