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![INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS LAN-85
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3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of th INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS LAN-85
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3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of th](/manual-img/42/57018/w960_57018-3448.png)
TROUBLE DIAGNOSIS LAN-85
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3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the Intelligent Key unit. Refer to BL-96, "
Schematic" .
OK or NG
OK >>Present error: Replace the Intelligent Key unit. Refer to BL-146, "Removal and Installation of
Intelligent Key Unit" .
Past error: Error was detected in the Intelligent Key unit branch line.
NG >> Repair the power supply and the ground circuit.
LDW Camera Unit Branch Line CircuitNKS004OL
INSPECTION PROCEDURE
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).
–LDW camera unit connector
–Harness connector R1
–Harness connector M31
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of LDW camera unit.
2. Check the resistance between the LDW camera unit harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the LDW camera unit branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the LDW camera unit. Refer to DI-96, "
Power Supply and
Ground Circuit Inspection" .
OK or NG
OK >>Present error: Replace the LDW camera unit. Refer to DI-104, "Removal and Installation for
LDW Camera Unit" .
Past error: Error was detected in the LDW camera unit branch line.
NG >> Repair the power supply and the ground circuit.
LDW camera unit harness connector Resistance ( Ω)
Connector No. Terminal No.
R9 10 5 Approx. 54 – 66
Page 3450 of 4366
![INFINITI FX35 2007 Service Manual LAN-86
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Steering Angle Sensor Branch Line CircuitNKS004O9
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Discon INFINITI FX35 2007 Service Manual LAN-86
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Steering Angle Sensor Branch Line CircuitNKS004O9
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Discon](/manual-img/42/57018/w960_57018-3449.png)
LAN-86
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Steering Angle Sensor Branch Line CircuitNKS004O9
INSPECTION PROCEDURE
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 steering angle sensor for damage, bend and loose connection (unit side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of steering angle sensor.
2. Check the resistance between the steering angle sensor harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the steering angle sensor branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of steering angle sensor. Refer to BRC-15, "
Schematic" .
OK or NG
OK >>Present error: Replace the steering angle sensor. Refer to BRC-63, "STEERING ANGLE SEN-
SOR" .
Past error: Error was detected in the steering angle sensor branch line.
NG >> Repair the power supply and the ground circuit.
Unified Meter and A/C Amp. Branch Line CircuitNKS004OA
INSPECTION PROCEDURE
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).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
Steering angle sensor harness connector Resistance ( Ω)
Connector No. Terminal No.
M14 4 5 Approx. 54 – 66
Page 3451 of 4366
![INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS LAN-87
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2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of unified meter and A/C amp. INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS LAN-87
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2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of unified meter and A/C amp.](/manual-img/42/57018/w960_57018-3450.png)
TROUBLE DIAGNOSIS LAN-87
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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.
OK or NG
OK >> GO TO 3.
NG >> 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 DI-33, "
Power Sup-
ply and Ground Circuit Inspection" .
OK or NG
OK >>Present error: Replace the unified meter and A/C amp. Refer to DI-37, "Removal and Installa-
tion of Unified Meter and A/C Amp." .
Past error: Error was detected in the unified meter and A/C amp. branch line.
NG >> Repair the power supply and the ground circuit.
ABS Actuator and Electric Unit (Control Unit) Branch Line CircuitNKS004OB
INSPECTION PROCEDURE
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 ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of ABS actuator and electric unit (control unit).
2. Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.
OK or NG
OK >> GO TO 3.
NG >> Repair the ABS actuator and electric unit (control unit) branch line.
Unified meter and A/C amp. harness connector Resistance ( Ω)
Connector No. Terminal No.
M55 1 11 Approx. 54 – 66
ABS actuator and electric unit (control unit) harness connector Resistance ( Ω)
Connector No. Terminal No.
E56 11 15 Approx. 54 – 66
Page 3452 of 4366
![INFINITI FX35 2007 Service Manual LAN-88
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of ABS actuator and electric unit (control uni INFINITI FX35 2007 Service Manual LAN-88
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of ABS actuator and electric unit (control uni](/manual-img/42/57018/w960_57018-3451.png)
LAN-88
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of ABS actuator and electric unit (control unit). Refer to BRC-
15, "Schematic" .
OK or NG
OK >>Present error: Replace the ABS actuator and electric unit (control unit). Refer to BRC-60,
"ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)" .
Past error: Error was detected in the ABS actuator and electric unit (control unit) branch line.
NG >> Repair the power supply and the ground circuit.
ICC Sensor Branch Line CircuitNKS004OM
INSPECTION PROCEDURE
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 sensor for damage, bend and loose connection (unit side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of ICC sensor.
2. Check the resistance between the ICC sensor harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the ICC sensor branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of ICC sensor. Refer to ACS-20, "
Schematic" .
OK or NG
OK >>Present error: Replace the ICC sensor. Refer to ACS-75, "ICC Sensor" .
Past error: Error was detected in the ICC sensor branch line.
NG >> Repair the power supply and the ground circuit.
ICC sensor harness connector Resistance ( Ω)
Connector No. Terminal No.
E39 3 6 Approx. 54 – 66
Page 3453 of 4366
![INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS LAN-89
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Driver Seat Control Unit Branch Line CircuitNKS004OC
INSPECTION PROCEDURE
1. CHECK CONNECTOR INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS LAN-89
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Driver Seat Control Unit Branch Line CircuitNKS004OC
INSPECTION PROCEDURE
1. CHECK CONNECTOR](/manual-img/42/57018/w960_57018-3452.png)
TROUBLE DIAGNOSIS LAN-89
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Driver Seat Control Unit Branch Line CircuitNKS004OC
INSPECTION PROCEDURE
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 connector
–Harness connector B151
–Harness connector B8
OK or NG
OK >> GO TO 2.
NG >> 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.
OK or NG
OK >> GO TO 3.
NG >> Repair the driver seat control unit branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of driver seat control unit. Refer to SE-37, "
CHECK POWER
SUPPLY AND GROUND" .
OK or NG
OK >>Present error: Replace the driver seat control unit.
Past error: Error was detected in the driver seat control unit branch line.
NG >> Repair the power supply and the ground circuit.
IPDM E/R Branch Line CircuitNKS004OD
INSPECTION PROCEDURE
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 IPDM E/R for damage, bend and loose connection (unit side and connector side).
–IPDM E/R connector
–Harness connector E205
–Harness connector B5
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
Driver seat control unit harness connector Resistance ( Ω)
Connector No. Terminal No.
B152 14 15 Approx. 54 – 66
Page 3454 of 4366
![INFINITI FX35 2007 Service Manual LAN-90
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of IPDM E/R.
2. Check the resistance between the IPDM E/R harness conn INFINITI FX35 2007 Service Manual LAN-90
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of IPDM E/R.
2. Check the resistance between the IPDM E/R harness conn](/manual-img/42/57018/w960_57018-3453.png)
LAN-90
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of IPDM E/R.
2. Check the resistance between the IPDM E/R harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the IPDM E/R branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the IPDM E/R. Refer to PG-26, "
IPDM E/R Power/Ground
Circuit Inspection" .
OK or NG
OK >>Present error: Replace the IPDM E/R. Refer to PG-28, "Removal and Installation of IPDM E/R"
.
Past error: Error was detected in the IPDM E/R branch line.
NG >> Repair the power supply and the ground circuit.
CAN Communication CircuitNKS004OE
INSPECTION PROCEDURE
1. CONNECTOR INSPECTION
1. Turn the ignition switch OFF
2. Disconnect the battery cable from the negative terminal.
3. Disconnect all the unit connectors on CAN communication system.
4. Check terminals and connectors for damage, bend and loose connection.
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Check the harness and repair the root cause.
IPDM E/R harness connector Resistance ( Ω)
Connector No. Terminal No.
E9 48 49 Approx. 108 – 132
Data link connector Continuity
Connector No. Terminal No.
M5 6 14 No
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![INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS LAN-91
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3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link conne INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS LAN-91
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3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link conne](/manual-img/42/57018/w960_57018-3454.png)
TROUBLE DIAGNOSIS LAN-91
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3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector and the ground.
OK or NG
OK >> GO TO 4.
NG >> Check the harness and repair the root cause.
4. CHECK ECM AND IPDM E/R TERMINATION CIRCUIT
1. Remove the ECM and the IPDM E/R.
2. Check the resistance between the ECM terminals.
3. Check the resistance between the IPDM E/R terminals.
OK or NG
OK >> GO TO 5.
NG >> Replace the ECM and/or the IPDM E/R.
5. CHECK SYMPTOM
Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with
customer)” are reproduced.
Inspection result
Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is
detected.
6. CHECK UNIT REPRODUCTION
Perform the reproduction test as per the following procedure for each unit.
1. Turn the ignition switch OFF
2. Disconnect the battery cable from the negative terminal.
3. Disconnect all the unit connectors on CAN communication system. NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first.
4. Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced.
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms.
Inspection result
Reproduced>>Connect the connector. Check other units as per the above procedure.
Non-reproduced>>Replace unit whose connector was disconnected.
Data link connector
Ground Continuity
Connector No. Terminal No.
M5 6No
14 No
ECM Resistance ( Ω)
Terminal No.
94 86 Approx. 108 – 132
IPDM E/R Resistance ( Ω)
Terminal No.
48 49 Approx. 108 – 132
LKIA0037E
Page 3456 of 4366
LAN-92
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45