2004 INFINITI FX35 ignition

LAN-246
[CAN]
CAN SYSTEM (TYPE 6)
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ICC sensor connector.
2. Check resistance between ICC sensor harness connector E39
terminals 3 (L) and 6 (R).
OK or NG
OK >> Replace ICC sensor.
NG >> Repair harness between ICC sensor and ABS actuator
and electric unit (control unit).
ABS Actuator and Electric Unit (Control Unit) Circuit CheckAKS00C2U
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of ABS actuator and electric unit (control unit) for damage, bend and loose
connection (control unit side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check resistance between ABS actuator and electric unit (con-
trol unit) harness connector E56 terminals 11 (L) and 15 (R).
OK or NG
OK >> Replace ABS actuator and electric unit (control unit).
NG >> Repair harness between ABS actuator and electric unit
(control unit) and ICC sensor.
Driver Seat Control Unit Circuit CheckAKS00C2V
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control unit side and
harness side).
–Driver seat control unit connector
–Harness connector B151
–Harness connector B8
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.3 (L) - 6 (R) : Approx. 54 - 66Ω
SKIA6888E
11 (L) - 15 (R) : Approx. 54 - 66Ω
SKIA6872E

CAN SYSTEM (TYPE 6)
LAN-247
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Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect driver seat control unit connector.
2. Check resistance between driver seat control unit harness con-
nector B152 terminals 14 (OR) and 15 (SB).
OK or NG
OK >> Replace driver seat control unit.
NG >> Repair harness between driver seat control unit and har-
ness connector B5.
IPDM E/R Circuit CheckAKS00C2W
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control module side
and harness side).
–IPDM E/R connector
–Harness connector E205
–Harness connector B5
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check resistance between IPDM E/R harness connector E9 ter-
minals 48 (L) and 49 (R).
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair harness between IPDM E/R and harness con-
nector B8. 14 (OR) - 15 (SB) : Approx. 54 - 66Ω
SKIA6882E
48 (L) - 49 (R) : Approx. 108 - 132Ω
SKIA6873E

LAN-248
[CAN]
CAN SYSTEM (TYPE 6)
Revision: 2004 November 2004 FX35/FX45
CAN Communication Circuit CheckAKS00C2X
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control module side,
control unit side, unit side, sensor side, meter side and harness side).
–ECM
–A/T assembly
–Display control unit
–AWD control unit
–Low tire pressure warning control unit
–ICC unit
–Intelligent Key unit
–BCM
–Steering angle sensor
–Unified meter and A/C amp.
–ICC sensor
–ABS actuator and electric unit (control unit)
–Driver seat control unit
–IPDM E/R
–Between ECM and IPDM E/R
–Between ECM and A/T assembly
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.

CAN SYSTEM (TYPE 6)
LAN-253
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Revision: 2004 November 2004 FX35/FX45
13. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between IPDM E/R harness connector E9 termi-
nals 48 (L), 49 (R) and ground.
OK or NG
OK >> GO TO 14.
NG >> Repair harness between IPDM E/R and harness con-
nector E205.
14. ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION
Check components inspection. Refer to LAN-253, "
ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-211, "Work Flow" .
NG >> Replace ECM and/or IPDM E/R.
IPDM E/R Ignition Relay Circuit CheckAKS00C2Y
Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to PG-28, "IPDM E/R Power/Ground Circuit Inspection" .

Ignition power supply circuit. Refer to PG-12, "IGNITION POWER SUPPLY - IGNITION SW. IN “ON”
AND/OR “START”" .
Component InspectionAKS00C2Z
ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.

Check resistance between ECM terminals 94 and 86.

Check resistance between IPDM E/R terminals 48 and 49.48 (L) - Ground : Continuity should not exist.
49 (R) - Ground : Continuity should not exist.
SKIA6879E
Unit TerminalResistance value (Ω)
(Approx.)
ECM 94 - 86
108 - 132
IPDM E/R 48 - 49
LKIA0037E

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Revision: 2004 November 2004 FX35/FX45HAZARD SWITCH .................................................. 109
Removal and Installation ...................................... 109
REMOVAL ......................................................... 109
INSTALLATION ................................................. 109
COMBINATION SWITCH .........................................110
Wiring Diagram — COMBSW — ........................... 110
Combination Switch Reading Function ................ . 111
CONSULT-II Function .......................................... . 111
CONSULT-II BASIC OPERATION ..................... . 111
DATA MONITOR ................................................ 112
Combination Switch Inspection ............................. 113
Removal and Installation ....................................... 115
STOP LAMP ............................................................116
Component Parts and Harness Connector Location .. 116
System Description ............................................... 116
Schematic ............................................................. 117
Wiring Diagram — STOP/L — ............................... 118
Stop Lamp Does Not Operate .............................. 121
High-Mounted Stop Lamp .................................... 123
BULB REPLACEMENT, REMOVAL AND
INSTALLATION ................................................. 123
Stop Lamp ............................................................ 123
BULB REPLACEMENT ..................................... 123
REMOVAL AND INSTALLATION ...................... 123
Rear Combination Lamp Control Unit .................. 123
REMOVAL AND INSTALLATION ...................... 123
STEP LAMP ............................................................ 124
Front Door Step Lamp .......................................... 124
BULB REPLACEMENT, REMOVAL AND
INSTALLATION ................................................. 124
Rear Door Step Lamp .......................................... 124
BULB REPLACEMENT, REMOVAL AND
INSTALLATION ................................................. 124
BACK-UP LAMP .................................................... 125
Wiring Diagram — BACK/L — ............................. 125
Bulb Replacement ................................................ 126
Removal and Installation ...................................... 126
PARKING, LICENSE PLATE AND TAIL LAMPS ... 127
Component Parts and Harness Connector Location . 127
System Description .............................................. 127
OPERATION BY LIGHTING SWITCH .............. 128
COMBINATION SWITCH READING FUNCTION . 129
EXTERIOR LAMP BATTERY SAVER CONTROL . 129
CAN Communication System Description ............ 129
CAN Communication Unit .................................... 129
Schematic ............................................................ 130
Wiring Diagram — TAIL/L — ................................ 131
Terminals and Reference Values for BCM ........... 136
Terminals and Reference Values for IPDM E/R ... 137
How to Proceed With Trouble Diagnosis .............. 137
Preliminary Check ................................................ 137
CHECK POWER SUPPLY AND GROUND CIR-
CUIT .................................................................. 137
CONSULT-II Functions ......................................... 138
Parking, License Plate and Tail Lamps Do Not Illu-
minate .................................................................. 139
Tail Lamp Does Not Operate ................................ 144
Parking, License Plate and Tail Lamps Do Not Turn
OFF (After Approx. 10 Minutes) ........................... 145License Plate Lamp ..............................................145
BULB REPLACEMENT, REMOVAL AND
INSTALLATION .................................................145
Front Parking (Clearance) Lamp ..........................146
BULB REPLACEMENT .....................................146
REMOVAL AND INSTALLATION ......................146
Tail Lamp ..............................................................146
BULB REPLACEMENT .....................................146
REMOVAL AND INSTALLATION ......................146
Front Side Marker Lamp .......................................146
BULB REPLACEMENT .....................................146
REMOVAL AND INSTALLATION ......................146
Rear Side Marker Lamp .......................................146
BULB REPLACEMENT .....................................146
REMOVAL AND INSTALLATION ......................146
Rear Combination Lamp Control Unit ...................146
REMOVAL AND INSTALLATION ......................146
REAR COMBINATION LAMP .................................147
Bulb Replacement ................................................147
REAR FENDER SIDE (REAR SIDE MARKER
LAMP BULB) .....................................................147
BACK DOOR SIDE (BACK-UP LAMP) .............147
Removal and Installation ......................................147
REMOVAL .........................................................147
INSTALLATION .................................................148
VANITY MIRROR LAMP .........................................149
Bulb Replacement ................................................149
MAP LAMP .............................................................150
Bulb Replacement ................................................150
Removal and Installation ......................................150
REMOVAL .........................................................150
INSTALLATION .................................................150
PERSONAL LAMP .................................................151
Bulb Replacement ................................................151
Removal and Installation ......................................151
REMOVAL .........................................................151
INSTALLATION .................................................151
LUGGAGE ROOM LAMP .......................................152
Bulb Replacement ................................................152
Removal and Installation ......................................152
REMOVAL .........................................................152
INSTALLATION .................................................152
IGNITION KEY HOLE ILLUMINATION ...................153
Bulb Replacement, Removal and Installation .......153
GLOVE BOX LAMP ................................................154
Bulb Replacement, Removal and Installation .......154
ASHTRAY ILLUMINATION .....................................155
Bulb Replacement and Removal and Installation . 155
CIGARETTE LIGHTER ILLUMINATION .................156
Bulb Replacement and Removal and Installation . 156
INTERIOR ROOM LAMP ........................................157
Component Parts and Harness Connector Location .157
System Description ...............................................157
POWER SUPPLY AND GROUND ....................157
SWITCH OPERATION ......................................159
ROOM LAMP TIMER OPERATION ..................159
INTERIOR LAMP BATTERY SAVER CONTROL .160
Schematic .............................................................162
Wiring Diagram — ROOM/L — ............................164

LT-4Revision: 2004 November 2004 FX35/FX45Terminals and Reference Values for BCM ............172
How to Proceed With Trouble Diagnosis ..............173
Preliminary Check ................................................173
CHECK FOR POWER SUPPLY AND GROUND
CIRCUIT ............................................................173
CONSULT-II Functions .........................................174
CONSULT-II BASIC OPERATION .....................174
WORK SUPPORT .............................................175
DATA MONITOR ................................................175
ACTIVE TEST ...................................................176
Interior Room Lamp Control Does Not Operate ...176
Map Lamp Control Does Not Operate ..................178
Personal Lamp Control Does Not Operate ...........180
Ignition key Hole illumination Control Does Not
Operate .................................................................181
All Step Lamps Do Not Operate ............................182
All Interior Room Lamps Do Not Operate .............183
Bulb Replacement ................................................183
ROOM LAMP .....................................................183
MAP LAMP ........................................................184PERSONAL LAMP .............................................184
Removal and Installation .......................................184
ROOM LAMP .....................................................184
MAP LAMP ........................................................184
PERSONAL LAMP .............................................184
ILLUMINATION ........................................................185
System Description ...............................................185
ILLUMINATION OPERATION BY LIGHTING
SWITCH .............................................................185
EXTERIOR LAMP BATTERY SAVER CONTROL .186
CAN Communication System Description ............186
CAN Communication Unit .....................................186
Schematic .............................................................187
Wiring Diagram — ILL — ......................................189
Removal and Installation .......................................197
ILLUMINATION CONTROL SWITCH ................197
GLOVE BOX LAMP ...........................................197
FRONT DOOR INSIDE ILLUMINATION ............197
BULB SPECIFICATIONS ........................................198
Headlamp ..............................................................198
Exterior Lamp ........................................................198
Interior Lamp/Illumination ......................................198

HEADLAMP - XENON TYPE -
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Revision: 2004 November 2004 FX35/FX45
HEADLAMP - XENON TYPE -PFP:26010
Component Parts and Harness Connector LocationAKS007M9
System DescriptionAKS007MA
Control of the headlamp system operation is dependent upon the position of the combination switch (lighting
switch). When the lighting switch is placed in the 2ND position, the BCM (body control module) receives input
signal requesting the headlamps (and tail lamps) illuminate. This input signal is communicated to the IPDM E/
R (intelligent power distribution module engine room) across the CAN communication lines. The central pro-
cessing unit of the IPDM E/R controls the headlamp high and headlamp low relay coils. These relays, when
energized, direct power to the respective headlamps, which then illuminate.
If voltage is applied to a high beam solenoid, the bulb shade will move, even a xenon head lamp bulb comes
out, and a high beam and a low beam are changed.
OUTLINE
Power is supplied at all times

to headlamp high relay [located in IPDM E/R (intelligent power distribution module engine room)]

to headlamp low relay [located in IPDM E/R (intelligent power distribution module engine room)]

to ignition relay [located in IPDM E/R (intelligent power distribution module engine room)]

through 10A fuse [No. 71, located in IPDM E/R (intelligent power distribution module engine room)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine room)]

through 15A fuse [No. 78, located in IPDM E/R (intelligent power distribution module engine room)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine room)]

through 50A fusible link (letter M, located in fuse and fusible link block)

to BCM (body control module) terminal 55

through 15A fuse [No. 22, located in fuse block (J/B)]

to BCM (body control module) terminal 42

through 10A fuse [No. 19, located in fuse block (J/B)]

to combination meter terminal 8.
PKIA5270E

LT-8
HEADLAMP - XENON TYPE -
Revision: 2004 November 2004 FX35/FX45
With the ignition switch in the ON or START position, power is supplied

to ignition relay [located in IPDM E/R (intelligent power distribution module engine room)]

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM (body control module) terminal 38

through 10A fuse [No. 14, located in fuse block (J/B)]

to combination meter terminal 7.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM (body control module) terminal 11.
Ground is supplied

to BCM (body control module) terminals 49 and 52

through grounds M35, M45 and M85

to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60

through grounds E21, E50 and E51

to combination meter terminals 5, 6 and 15

through grounds M35, M45 and M85.
Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input signal requesting the headlamps to illuminate.
This input signal is communicated to the IPDM E/R across the CAN communication lines. The CPU in the
IPDM E/R controls the headlamp low relay coil, which when energized, directs power

to 15A fuse [No. 76, located in IPDM E/R]

through IPDM E/R terminal 20

to headlamp RH terminal 6

to 15A fuse [No. 86, located in IPDM E/R]

through IPDM E/R terminal 30

to headlamp LH terminal 6.
Ground is supplied

to headlamp RH terminal 7

through grounds E21, E50 and E51

to headlamp LH terminal 7

through grounds E21, E50 and E51.
With power and ground supplied, low beam headlamps illuminate.
High Beam Operation/Flash-to-Pass Operation
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM receives input signal
requesting the headlamp high beams to illuminate. This input signal is communicated to the IPDM E/R across
the CAN communication lines. The CPU in the IPDM E/R controls the headlamp high relay coil and low relay
coil, which when energized, directs power

to 15A fuse [No. 76, located in IPDM E/R]

through IPDM E/R terminal 20

to headlamp RH terminal 6, and

to 15A fuse [No. 86, located in IPDM E/R]

through IPDM E/R terminal 30

to headlamp LH terminal 6

to 10A fuse [No. 72, located in IPDM E/R]

through IPDM E/R terminal 27

to headlamp RH terminal 5, and

to 10A fuse [No. 74, located in IPDM E/R]

through IPDM E/R terminal 28

to headlamp LH terminal 5.