2008 INFINITI FX35 ignition

LAN-74
< SERVICE INFORMATION >[CAN]
TROUBLE DIAGNOSIS
NG >> Repair the power supply and the ground circuit.
ICC Unit Branch Line CircuitINFOID:0000000001328657
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 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 ICC unit.
2. Check the resistance between the ICC unit harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> 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 ACS-19, "
Schematic".
OK or NG
OK >>  Present error: Replace the ICC unit. Refer to ACS-65, "ICC Unit".
 Past error: Error was detected in the ICC unit branch line.
NG >> Repair the power supply and the ground circuit.
TCM Branch Line CircuitINFOID:0000000001328658
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).
- A/T assembly
- Harness connector F102
- Harness connector M82
OK or NG
OK >> GO TO 2.
NG >> 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.
OK or NG
ICC unit harness connector Resistance (Ω)
Connector No. Terminal No.
M88 14 5 Approx. 54 – 66
A/T assembly harness connector Resistance (Ω)
Connector No. Terminal No.
F44 3 8 Approx. 54 – 66
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TROUBLE DIAGNOSISLAN-75
< SERVICE INFORMATION > [CAN]
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OK >> GO TO 3.
NG >> Repair the TCM branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the TCM. Refer to AT-161, "
Diagnosis Procedure".
OK or NG
OK >>  Present error: Replace the control valve with TCM. Refer to AT-215, "Control Valve with TCM
and A/T Fluid Temperature Sensor 2".
 Past error: Error was detected in the TCM branch line.
NG >> Repair the power supply and the ground circuit.
BCM Branch Line CircuitINFOID:0000000001328659
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the terminals and connectors of the BC M 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 BCM.
2. Check the resistance between the BCM harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> 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 BCS-10, "
Schematic".
OK or NG
OK >>  Present error: Replace the BCM. Refer to BCS-13, "Removal and Installation of BCM".
 Past error: Error was detected in the BCM branch line.
NG >> Repair the power supply and the ground circuit.
Data Link Connector Branch Line CircuitINFOID:0000000001328660
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
Check the resistance between the data link connector terminals.
BCM harness connector Resistance (Ω)
Connector No. Terminal No.
M3 39 40 Approx. 54 – 66
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LAN-76
< SERVICE INFORMATION >[CAN]
TROUBLE DIAGNOSIS
OK or NG
OK >>  Present error: Check the following items again.
- Decision of CAN system type.
- Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR (“ECU
list” included)].
- Not copied from on-board diagnosis.
- Procedure for detecting root cause.
 Past error: Error was detected in the data link connector branch line circuit.
NG >> Repair the data link connector branch line.
Intelligent Key Unit Branch Line CircuitINFOID:0000000001328661
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 Inte lligent Key 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 Intelligent Key unit.
2. Check the resistance between the Intelligent Key unit harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the Intelligent Key unit branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the Intelligent Key unit. Refer to B L - 111 , "
Check Intelligent
Key Unit Power Supply and Ground Circuit".
OK or NG
OK >>  Present error: Replace the Intelligent Key unit. Refer to BL-130, "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 CircuitINFOID:0000000001328662
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
Data link connector Resistance (Ω)
Connector No. Terminal No.
M5 6 14 Approx. 54 – 66
Intelligent Key unit harness connector Resistance (Ω)
Connector No. Terminal No.
M34 2 3 Approx. 54 – 66
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TROUBLE DIAGNOSISLAN-77
< SERVICE INFORMATION > [CAN]
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- 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. (Replac e the room lamp harness if error is detected on
the shield line.)
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the LDW camera unit. Re\
fer to DI-84, "
Power Supply and
Ground Circuit Inspection".
OK or NG
OK >>  Present error: Replace the LDW camera unit. Refer to DI-91, "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.
Steering Angle Sensor Branch Line CircuitINFOID:0000000001328663
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the terminals and connectors of the steer ing 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 the steering angle sensor. Refer to BRC-17, "
Schematic".
OK or NG
OK >>  Present error: Replace the steering angle sensor. Refer to BRC-56, "Removal and Installation".
 Past error: Error was detected in the steering angle sensor branch line.
LDW camera unit harness connector
Resistance (Ω)
Connector No. Terminal No.
R9 10 5 Approx. 54 – 66
Steering angle sensor harness connector Resistance (Ω)
Connector No. Terminal No.
M14 4 5 Approx. 54 – 66
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LAN-78
< SERVICE INFORMATION >[CAN]
TROUBLE DIAGNOSIS
NG >> Repair the power supply and the ground circuit.
Unified Meter and A/C
Amp. Branch Line CircuitINFOID:0000000001328664
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 unifi ed 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.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of unified meter and A/C amp.
2. Check the resistance between the unified me ter 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-29, "
Power Sup-
ply and Ground Circuit Inspection".
OK or NG
OK >>  Present error: Replace the unified meter and A/C amp. Refer to DI-32, "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 (C ontrol Unit) Branch Line CircuitINFOID:0000000001328665
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 act uator 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 actuat or 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
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 (c ontrol unit) harness connector
Resistance (Ω)
Connector No. Terminal No.
E56 11 15 Approx. 54 – 66
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TROUBLE DIAGNOSISLAN-79
< SERVICE INFORMATION > [CAN]
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OK >> GO TO 3.
NG >> Repair the ABS actuator and electric unit (control unit) branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the A BS actuator and electric unit (control unit). Refer to
BRC-17, "
Schematic".
OK or NG
OK >>  Present error: Replace the ABS actuator and electric unit (control unit). Refer to BRC-54,
"Removal and Installation".
 Past error: Error was detected in the ABS act uator and electric unit (control unit) branch line.
NG >> Repair the power supply and the ground circuit.
ICC Sensor Branch Line CircuitINFOID:0000000001328666
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the terminals and connectors of the ICC s ensor 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 I CC 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 the ICC sensor. Refer to ACS-19, "
Schematic".
OK or NG
OK >>  Present error: Replace the ICC sensor. Refer to ACS-65, "ICC Sensor".
 Past error: Error was detected in the ICC sensor branch line.
NG >> Repair the power supply and the ground circuit.
Driver Seat Control Un it Branch Line CircuitINFOID:0000000001328667
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e 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 B151
- Harness connector B8
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
ICC sensor harness connector Resistance (Ω)
Connector No. Terminal No.
E39 3 6 Approx. 54 – 66
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LAN-80
< SERVICE INFORMATION >[CAN]
TROUBLE DIAGNOSIS
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 the driver seat control unit. Refer to SE-18, "
Schematic".
OK or NG
OK >>  Present error: Replace the driver seat control unit. Refer to SE-16, "Component Parts and Har-
ness Connector Location".
 Past error: Error was detected in t he driver seat control unit branch line.
NG >> Repair the power supply and the ground circuit.
IPDM E/R Branch Line CircuitINFOID:0000000001328668
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 fo r damage, bend and loose connection (unit side and con-
nector side).
- IPDM E/R
- Harness connector E205
- Harness connector B5
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
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-23, "
IPDM E/R Power/Ground
Circuit Inspection".
OK or NG
OK >>  Present error: Replace the IPDM E/R. Refer to PG-24, "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.
Driver seat control unit harness connector Resistance (Ω)
Connector No. Terminal No.
B152 14 15 Approx. 54 – 66
IPDM E/R harness connector Resistance (Ω)
Connector No. Terminal No.
E9 48 49 Approx. 108 – 132
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TROUBLE DIAGNOSISLAN-81
< SERVICE INFORMATION > [CAN]
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CAN Communication CircuitINFOID:0000000001328669
INSPECTION PROCEDURE
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF
2. Disconnect the battery cabl e 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 CONTINUI TY (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.
3.CHECK HARNESS CONTINUI TY (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 descr ibed in the “Symptom (Results from interview with
customer)” are reproduced.
Data link connector Continuity
Connector No. Terminal No.
M5 6 14 No
Data link connector
GroundContinuity
Connector No. Terminal No.
M5 6No
14 No
ECM Resistance (Ω)
Te r m i n a l N o .
94 86 Approx. 108 – 132
IPDM E/R Resistance (Ω)
Te r m i n a l N o .
48 49 Approx. 108 – 132
LKIA0037E
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