Infiniti FX35, FX50 (S51). Manual — part 1337
LAN-290
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 9)]
A-BAG BRANCH LINE CIRCUIT
A-BAG BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000005577199
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
AV BRANCH LINE CIRCUIT
LAN-291
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 9)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
AV BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000005577200
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.
-
Models with navigation system
-
Models without navigation system
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 the following.
• Without navigation:
AV-101, "AV CONTROL UNIT : Diagnosis Procedure"
• With navigation (Single monitor):
AV-291, "AV CONTROL UNIT : Diagnosis Procedure"
• With navigation (Twin monitor):
AV-510, "AV CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the AV control unit. Refer to the following.
• Without navigation:
• With navigation (Single monitor):
• With navigation (Twin monitor):
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
AV control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M204
81
80
Approx. 54 – 66
LAN-292
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 9)]
BCM BRANCH LINE CIRCUIT
BCM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000005577201
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
.
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.
M122
91
90
Approx. 54 – 66
LAN
M&A BRANCH LINE CIRCUIT
LAN-293
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 9)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
M&A BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000005577202
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 unified meter and A/C amp. for damage, bend and loose con-
nection (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 unified meter and A/C amp.
2.
Check the resistance between the unified meter and A/C amp. harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the unified meter and A/C amp. branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the unified meter and A/C amp. Refer to
METER AND A/C AMP. : Diagnosis Procedure"
.
Is the inspection result normal?
YES (Present error)>>Replace the unified meter and A/C amp. Refer to
YES (Past error)>>Error was detected in the unified meter and A/C amp. branch line.
NO
>> Repair the power supply and the ground circuit.
Unified meter and A/C amp. harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M67
56
72
Approx. 54 – 66
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