Infiniti FX35, FX50 (S51). Manual — part 1330
LAN-262
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
MAIN LINE BETWEEN M&A AND ADP CIRCUIT
MAIN LINE BETWEEN M&A AND ADP CIRCUIT
Diagnosis Procedure
INFOID:0000000005577151
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 (connector side
and harness side).
-
Harness connector M7
-
Harness connector B1
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the following harness connectors.
-
Unified meter and A/C amp.
-
Harness connectors M7 and B1
2.
Check the continuity between the unified meter and A/C amp. harness connector and the harness con-
nector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the main line between the unified meter and A/C amp. and the harness connector M7.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Check the continuity between the harness connector terminals.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the unified meter and A/C amp. and the
driver seat control unit.
NO
>> Repair the main line between the harness connector B1 and the driver seat control unit.
Unified meter and A/C amp. harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M67
56
M7
80
Existed
72
81
Existed
Connector No.
Terminal No.
Continuity
B1
80
82
Existed
81
83
Existed
LAN
MAIN LINE BETWEEN ADP AND ABS CIRCUIT
LAN-263
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
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MAIN LINE BETWEEN ADP AND ABS CIRCUIT
Diagnosis Procedure
INFOID:0000000005577155
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 (connector side
and harness side).
-
Harness connector B1
-
Harness connector M7
-
Harness connector M6
-
Harness connector E106
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors B1 and M7.
2.
Check the continuity between the harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the main line between the driver seat control unit and the harness connector B1.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors M6 and E106.
2.
Check the continuity between the harness connectors.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair the main line between the harness connectors M7 and M6.
4.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of ABS actuator and electric unit (control unit).
2.
Check the continuity between the harness connector and the ABS actuator and electric unit (control unit)
harness connector.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the driver seat control unit and the ABS actu-
ator and electric unit (control unit).
Connector No.
Terminal No.
Continuity
B1
82
80
Existed
83
81
Existed
Harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M7
82
M6
47
Existed
83
48
Existed
Harness connector
ABS actuator and electric unit (control unit)
harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E106
47
E41
35
Existed
48
14
Existed
LAN-264
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
MAIN LINE BETWEEN ADP AND ABS CIRCUIT
NO
>> Repair the main line between the harness connector E106 and the ABS actuator and electric unit
(control unit).
LAN
ECM BRANCH LINE CIRCUIT
LAN-265
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
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ECM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000005577156
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 ECM 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 ECM.
2.
Check the resistance between the ECM harness connector terminals.
-
VQ engine models
-
VK engine models
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the ECM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to the following.
• VQ engine models:
• VK engine models:
Is the inspection result normal?
YES (Present error)>>Replace the ECM. Refer to the following.
• VQ engine models:
EC-23, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT :
• VK engine models:
EC-579, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
(ECM) : Special Repair Requirement"
YES (Past error)>>Error was detected in the ECM branch line.
NO
>> Repair the power supply and the ground circuit.
ECM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M107
114
113
Approx. 108 – 132
ECM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M160
105
101
Approx. 108 – 132
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