2007 INFINITI FX35 ignition

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

TROUBLE DIAGNOSIS LAN-87
[CAN]
C
D E
F
G H
I
J
L
M A
B
LAN
Revision: 2006 July 2007 FX35/FX45
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

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

TROUBLE DIAGNOSIS LAN-89
[CAN]
C
D E
F
G H
I
J
L
M A
B
LAN
Revision: 2006 July 2007 FX35/FX45
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

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

TROUBLE DIAGNOSIS LAN-91
[CAN]
C
D E
F
G H
I
J
L
M A
B
LAN
Revision: 2006 July 2007 FX35/FX45
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

LT-3
C
D E
F
G H
I
J
L
M A
B
LT
Revision: 2006 July 2007 FX35/FX45
LIGHTING AND TURN SIGNAL SWITCH .............
. 109
Removal and Installation ..................................... . 109
REMOVAL ........................................................ . 109
INSTALLATION ................................................ . 109
HAZARD SWITCH ................................................. ..110
Removal and Installation ..................................... .. 110
REMOVAL ........................................................ .. 110
INSTALLATION ................................................ .. 110
COMBINATION SWITCH ....................................... .. 111
Wiring Diagram — COMBSW — ......................... . . 111
Combination Switch Reading Function ............... .. 112
Terminals and Reference Values for BCM .......... .. 112
CONSULT-II Functions (BCM) ............................ .. 117
CONSULT-II BASIC OPERATION .................... .. 117
DATA MONITOR .............................................. .. 117
Combination Switch Inspection ........................... .. 118
Removal and Installation ..................................... . 120
STOP LAMP .......................................................... . 121
Component Parts and Harness Connector Location . 121
System Description ............................................. . 121
Schematic ........................................................... . 122
Wiring Diagram — STOP/L — ............................. . 123
Terminals and Reference Value for Rear Combina-
tion Lamp Control Unit ........................................ . 126
Stop Lamp Does Not Operate ............................. . 126
High-Mounted Stop Lamp ................................... . 128
BULB REPLACEMENT, REMOVAL AND
INSTALLATION ................................................ . 128
Stop Lamp ........................................................... . 128
BULB REPLACEMENT .................................... . 128
REMOVAL AND INSTALLATION ..................... . 128
Rear Combination Lamp Control Unit ................. . 128
REMOVAL AND INSTALLATION ..................... . 128
BACK-UP LAMP ................................................... . 129
Wiring Diagram — BACK/L — ............................ . 129
Bulb Replacement ............................................... . 130
Removal and Installation ..................................... . 130
PARKING, LICENSE PLATE AND TAIL LAMPS .. . 131
Component Parts and Harness Connector Location . 131
System Description ............................................. . 131
OUT LINE ......................................................... . 131
OPERATION BY LIGHTING SWITCH ............. . 132
COMBINATION SWITCH READING FUNCTION . 133
EXTERIOR LAMP BATTERY SAVER CONTROL . 133
CAN Communication System Description ........... . 133
CAN Communication Unit ................................... . 133
Schematic ........................................................... . 134
Wiring Diagram — TAIL/L — ............................... . 135
Terminals and Reference Values for BCM .......... . 140
Terminals and Reference Values for IPDM E/R .. . 141
Terminals and Reference Value for Rear Combina-
tion Lamp Control Unit ........................................ . 141
How to Proceed With Trouble Diagnosis ............. . 141
Preliminary Check ............................................... . 141
CHECK POWER SUPPLY AND GROUND CIR-
CUIT ................................................................. . 141
CONSULT-II Functions (BCM) ............................ . 142
CONSULT-II Functions (IPDM E/R) .................... . 142
Parking, License Plate and Side Marker Lamps Do Not Illuminate .......................................................
.143
Tail Lamp Does Not Operate ............................... .147
Parking, License Plate, Side Maker and Tail Lamps
Do Not Turn OFF (After Approx. 10 Minutes) ...... .149
License Plate Lamp ............................................. .150
BULB REPLACEMENT, REMOVAL AND
INSTALLATION ................................................ .150
Front Parking Lamp ............................................. .150
BULB REPLACEMENT .................................... .150
REMOVAL AND INSTALLATION ..................... .150
Tail Lamp ............................................................. .150
BULB REPLACEMENT .................................... .150
REMOVAL AND INSTALLATION ..................... .150
Front Side Marker Lamp ...................................... .150
BULB REPLACEMENT .................................... .150
REMOVAL AND INSTALLATION ..................... .150
Rear Side Marker Lamp ...................................... .150
BULB REPLACEMENT .................................... .150
REMOVAL AND INSTALLATION ..................... .150
Rear Combination Lamp Control Unit .................. .150
REMOVAL AND INSTALLATION ..................... .150
REAR COMBINATION LAMP ................................ .151
Bulb Replacement ............................................... .151
REAR FENDER SIDE (REAR SIDE MARKER
LAMP BULB) .................................................... .151
BACK DOOR SIDE (BACK-UP LAMP) ............ .151
Removal and Installation ..................................... .151
REMOVAL ........................................................ .151
INSTALLATION ................................................ .151
INTERIOR ROOM LAMP ....................................... .152
Component Parts and Harness Connector Location .152
System Description .............................................. .152
POWER SUPPLY AND GROUND ................... .153
SWITCH OPERATION ..................................... .154
ROOM LAMP TIMER OPERATION ................. .155
INTERIOR LAMP BATTERY SAVER CONTROL .157
Schematic ............................................................ .158
Wiring Diagram — ROOM/L — ........................... .160
Terminals and Reference Values for BCM ........... .168
How to Proceed With Trouble Diagnosis ............. .169
Preliminary Check ............................................... .170
CHECK FOR POWER SUPPLY AND GROUND
CIRCUIT ........................................................... .170
CONSULT-II Functions (BCM) ............................. .171
CONSULT-II BASIC OPERATION .................... .171
WORK SUPPORT (INT LAMP) ........................ .171
DATA MONITOR (INT LAMP) .......................... .171
ACTIVE TEST (INT LAMP) .............................. .172
WORK SUPPORT (BATTERY SAVER) ........... .173
DATA MONITOR (BATTERY SAVER) .............. .173
ACTIVE TEST (BATTERY SAVER) .................. .174
Interior Room Lamp Control Does Not Operate .. .174
Map Lamp Control Does Not Operate ................. .176
Personal Lamp Control Does Not Operate .......... .178
Ignition Key Hole Illumination Control Does Not
Operate ................................................................ .179
All Step Lamps Do Not Operate .......................... .181
All Interior Room Lamps Do Not Operate ............ .182
Bulb Replacement ............................................... .182

LT-4Revision: 2006 July 2007 FX35/FX45
IGNITION KEY HOLE ILLUMINATION (WITH-
OUT INTELLIGENT KEY) ................................ .182
IGNITION KEY HOLE ILLUMINATION (WITH
INTELLIGENT KEY) ......................................... .182
FRONT STEP LAMP ........................................ .183
REAR STEP LAMP .......................................... .183
LUGGAGE ROOM LAMP ................................. .183
VANITY MIRROR LAMP .................................. .183
MAP LAMP ....................................................... .184
INTERIOR ROOM LAMP ................................. .184
PERSONAL LAMP ........................................... .184
Removal and Installation ..................................... .184
LUGGAGE ROOM LAMP ................................. .184
MAP LAMP ....................................................... .185
INTERIOR ROOM LAMP ................................. .185
PERSONAL LAMP ........................................... .185
ILLUMINATION ...................................................... .186
System Description .............................................. .186 ILLUMINATION OPERATION BY LIGHTING
SWITCH ............................................................ .186
EXTERIOR LAMP BATTERY SAVER CONTROL .187
CAN Communication System Description ........... .188
CAN Communication Unit .................................... .188
Schematic ............................................................ .189
Wiring Diagram — ILL — ..................................... .191
Bulb Replacement ................................................ .200
GLOVE BOX LAMP .......................................... .200
A/T DEVICE ILLUMINATION ............................ .200
COIN BOX ILLUMINATION .............................. .200
Removal and Installation ...................................... .200
ILLUMINATION CONTROL SWITCH ............... .200
BULB SPECIFICATIONS ....................................... .201
Headlamp ............................................................. .201
Exterior Lamp ....................................................... .201
Interior Lamp/Illumination ..................................... .201