electrical INFINITI FX35 2004 Service Manual

LT-6
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45
General precautions for service operationsAKS004ZU

Never work with wet hands.

Xenon headlamp includes high voltage generating part. Be sure
to disconnect battery negative cable (negative terminal) or
power fuse before removing, installing, or touching the xenon
headlamp (including lamp bulb).

Turn the lighting switch OFF before disconnecting and connect-
ing the connector.

When turning the xenon headlamp on and while it is illuminated,
never touch the harness, bulb, and socket of the headlamp.

When checking the headlamp on/off operation, check it on vehi-
cle and with the power connected to the vehicle-side connector.

Do not touch the headlamp bulb glass surface with bare hands or allow oil or grease to get on it. Do not
touch the headlamp bulb just after the headlamp is turned off, because it is very hot.

Install the xenon headlamp bulb socket correctly. If it is installed
improperly, high-voltage leak or corona discharge may occur
that can melt the bulb, connector, and housing. Do not illuminate
the xenon headlamp bulb out of the headlamp housing. Doing
so can cause fire and harm your eyes.

When the bulb has burned out, wrap it in a thick vinyl bag and
discard. Do not break the bulb.

Leaving the bulb removed from the headlamp housing for a long
period of time can deteriorate the performance of the lens and
reflector (dirt, clouding). Always prepare a new bulb and have it
on hand when replacing the bulb.

When adjusting the headlamp aiming, turn the aiming adjust-
ment screw only in the tightening direction. (If it is necessary to loosen the screw, first fully loosen the
screw, and then turn it in the tightening direction.)

Do not use organic solvent (paint thinner or gasoline) to clean lamps and to remove old sealant.
Wiring Diagrams and Trouble DiagnosisAKS004ZV
When you read wiring diagrams, refer to the following:

Refer to GI-15, "How to Read Wiring Diagrams" in GI section.

Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution in PG section.
When you perform trouble diagnosis, refer to the following:

Refer to GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section.

Refer to GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section.
PKIA0183E
EL-3422D

LT-18
HEADLAMP - XENON TYPE -
Revision: 2004 November 2004 FX35/FX45
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Check ground circuit harness.
CONSULT-II Functions (BCM)AKS007MJ

CONSULT-II executes the following functions by combining data reception and command transmission via
the communication line from BCM. Work support, self-diagnosis, data monitor, and active test display.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
Terminals
Continuity
Connector Terminal (Wire color)
M449 (B)
Ground Yes
52 (B)
PKIA5191E
BCM diagnosis part Check item, diagnosis mode Description
HEADLAMPWORK SUPPORT Changes the setting for each function.
DATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
BCM CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
PBIB1503E
SKIA3098E

HEADLAMP - XENON TYPE -
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Revision: 2004 November 2004 FX35/FX45
CAUTION:AKS007MT

Installation or removal of the connector must be done with the lighting switch OFF.

When the lamp is illuminated (when the lighting switch is ON), do not touch the harness, HID control unit,
inside of the lamp, or the lamp metal parts.

To check illumination, temporarily install lamp in the vehicle. Be sure to connect power at the vehicle-side
connector.

If the error can be traced directly to the electrical system, first check for items such as burned-out fuses
and fusible links, broken wires or loose connectors, pulled-out terminals, and improper connections.

Do not work with wet hands.

Using a tester for HID control unit circuit trouble diagnosis is prohibited.

Disassembling the HID control unit or harnesses (bulb socket harness, ECM harness) is prohibited.

Immediately after illumination, the light intensity and color will fluctuate, but there is nothing wrong.

When the bulb has reached the end of its lifetime, the brightness may drop significantly, it may flash
repeatedly, or the light may turn a reddish color.
Xenon Headlamp Trouble DiagnosisAKS007MU
1. CHECK 1: XENON HEADLAMP LIGHTING
Install normal xenon bulb to corresponding xenon bulb headlamp, and check if lamp lights up.
OK or NG
OK >> Replace xenon bulb.
NG >> GO TO 2.
2. CHECK 2: XENON HEADLAMP LIGHTING
Install normal HID control unit to corresponding xenon headlamp, and check if lamp lights up.
OK or NG
OK >> Replace HID control unit.
NG >> GO TO 3.
3. CHECK 3: XENON HEADLAMP LIGHTING
Install normal xenon lamp housing assembly to corresponding xenon headlamp, and check if lamp lights up.
OK or NG
OK >> Malfunction in starter (boosting circuit) in xenon headlamp housing. (Replace xenon headlamp
housing assembly.)
NG >> INSPECTION END

LT-48
DAYTIME LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
2. CHECK PARKING BRAKE SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Disconnect parking brake switch connector.
3. Turn ignition switch ON.
4. Check voltage between parking brake switch harness connector
E207 terminal 1 (L) and ground.
OK or NG
OK >> Replace parking brake switch.
NG >> GO TO 3.
3. CHECK PARKING BRAKE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Check continuity between combination meter harness connector
M20 terminal 23 (PU/W) and parking brake switch harness con-
nector E207 terminal 1 (L).
OK or NG
OK >> Replace combination meter.
NG >> Repair harness or connector.
CONSULT-II Functions AKS007N8

CONSULT-II executes the following functions by combining data reception and command transmission via
the communication line from BCM. Work support, self-diagnosis, data monitor, and active test display.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.1 (L) – Ground : Battery voltage should exist.
SKIA5876E
1 (L) – 23 (PU/W) : Continuity should exist.
SKIA5877E
BCM diagnosis part Check item, diagnosis mode Description
HEADLAMPDATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
BCM CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
PBIB1503E

AUTO LIGHT SYSTEM
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Revision: 2004 November 2004 FX35/FX45
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open or short between BCM and
fuse.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Check ground circuit harness.
CONSULT-II Functions (BCM)AKS007I5

CONSULT-II executes the following functions by combining data reception and command transmission via
the communication line from BCM. Work support, self-diagnosis, data monitor, and active test display.
Terminals Ignition switch position
(+)
(-) OFF ACC ON
ConnectorTerminal
(Wire color)
M311 (LG/R)
Ground0VBattery
voltageBattery
voltage
38 (W/L) 0V 0VBattery
voltage
M442 (L/R)Battery
voltageBattery
voltageBattery
voltage
55 (G)Battery
voltageBattery
voltageBattery
voltage
PKIA5204E
Terminals
Continuity
Connector Terminal (Wire color)
M449 (B)
Ground Yes
52 (B)
PKIA5191E
BCM diagnosis part Check item, diagnosis mode Description
HEADLAMPWORK SUPPORT Changes the setting for each function.
DATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
BCM CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.

LT-100
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2004 November 2004 FX35/FX45
CONSULT-II FunctionsAKS007D4
CONSULT-II has a display function for work support, self-diagnosis, data monitor, and active test for each part
by combining data receiving and sending via the communication line from BCM.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “BCM” on “SELECT SYSTEM” screen.
If “BCM” is not indicated, refer to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnosis part Check item, diagnosis mode Description
FLASHERData monitor Displays BCM input data in real time.
Active test Operation of electrical loads can be checked by sending driving signal to them.
PBIB1503E
SKIA3098E
PKIA5222E

LT-174
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
CONSULT-II FunctionsAKS007FE
CONSULT-II has a display function for work support, self-diagnosis, data monitor, and active test for each part
by combining data receiving and sending via the communication line from BCM.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “BCM” on “SELECT SYSTEM” screen.
If “BCM” is not indicated, refer to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnosis part Check item, diagnosis mode Description
INTERIOR LAMPWork support Changes the setting for each function.
Data monitor Displays BCM input data in real time.
Active test Operation of electrical loads can be checked by sending driving signal to them.
PBIB1503E
SKIA3098E
PKIA5222E

PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
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SECTION PG
A
B
PG
Revision: 2004 November 2004 FX35/FX45
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
POWER SUPPLY ROUTING CIRCUIT ...................... 3
Schematic ................................................................ 3
Wiring Diagram - POWER - ..................................... 4
BATTERY POWER SUPPLY - IGNITION SW. IN
ANY POSITION ..................................................... 4
ACCESSORY POWER SUPPLY - IGNITION SW.
IN “ACC” OR “ON” .............................................. 10
IGNITION POWER SUPPLY - IGNITION SW. IN
“ON” AND/OR “START” ....................................... 12
Fuse ....................................................................... 17
Fusible Link ............................................................ 17
Circuit Breaker ....................................................... 17
IPDM E/R (INTELLIGENT POWER DISTRIBUTION
MODULE ENGINE ROOM) ...................................... 18
System Description ................................................ 18
SYSTEMS CONTROLLED BY IPDM E/R ........... 18
CAN COMMUNICATION LINE CONTROL ......... 18
IPDM E/R STATUS CONTROL ........................... 19
CAN Communication System Description .............. 19
CAN Communication Unit ...................................... 19
Function of Detecting Ignition Relay Malfunction ... 19
CONSULT-II ........................................................... 20
CONSULT-II INSPECTION PROCEDURE ......... 20
SELF-DIAG RESULTS ........................................ 21
DATA MONITOR ................................................. 22
ACTIVE TEST ..................................................... 22
Auto Active Test ..................................................... 24
DESCRIPTION .................................................... 24
OPERATION PROCEDURE ............................... 24
INSPECTION IN AUTO ACTIVE TEST MODE ... 24
Schematic .............................................................. 26
IPDM E/R Terminal Arrangement ........................... 27
IPDM E/R Power/Ground Circuit Inspection .......... 28
Inspection With CONSULT-II (Self-Diagnosis) ....... 29
Removal and Installation of IPDM E/R ................... 30
REMOVAL ........................................................... 30
INSTALLATION ................................................... 30GROUND ................................................................... 31
Ground Distribution ................................................. 31
MAIN HARNESS ................................................. 31
ENGINE ROOM HARNESS ................................ 34
ENGINE HARNESS/VK ENGINE MODELS ........ 37
ENGINE HARNESS/VQ ENGINE MODELS ....... 38
ENGINE CONTROL HARNESS/VK ENGINE
MODELS ............................................................. 39
ENGINE CONTROL HARNESS/VQ ENGINE
MODELS ............................................................. 40
BODY HARNESS ................................................ 41
BODY NO.2 HARNESS ...................................... 44
ROOM LAMP HARNESS .................................... 45
HARNESS ................................................................. 46
Harness Layout ...................................................... 46
HOW TO READ HARNESS LAYOUT ................. 46
OUTLINE ............................................................. 47
MAIN HARNESS ................................................. 48
ENGINE ROOM HARNESS ................................ 51
ENGINE HARNESS/VK ENGINE MODELS ........ 54
ENGINE HARNESS/VQ ENGINE MODELS ....... 55
ENGINE CONTROL HARNESS/VK ENGINE
MODELS ............................................................. 56
ENGINE CONTROL HARNESS/VQ ENGINE
MODELS ............................................................. 58
BODY HARNESS ................................................ 60
BODY NO.2 HARNESS ...................................... 62
ROOM LAMP HARNESS .................................... 63
FRONT DOOR HARNESS .................................. 64
REAR DOOR HARNESS .................................... 65
BACK DOOR HARNESS .................................... 66
Wiring Diagram Codes (Cell Codes) ...................... 67
ELECTRICAL UNITS LOCATION ............................ 70
Electrical Units Location ......................................... 70
ENGINE COMPARTMENT .................................. 70
PASSENGER COMPARTMENT ......................... 71
LUGGAGE COMPARTMENT .............................. 73
HARNESS CONNECTOR ......................................... 74
Description .............................................................. 74
HERNESS CONNECTOR (TAB-LOCKING

PG-2Revision: 2004 November 2004 FX35/FX45TYPE) .................................................................. 74
HARNESS CONNECTOR (SLIDE-LOCKING
TYPE) .................................................................. 75
JOINT CONNECTOR (J/C) ....................................... 76
Terminal Arrangement ............................................ 76
ELECTRICAL UNITS ................................................ 77
Terminal Arrangement ............................................ 77
SMJ (SUPER MULTIPLE JUNCTION) ..................... 79
Terminal Arrangement ............................................ 79STANDARDIZED RELAY .......................................... 81
Description .............................................................. 81
NORMAL OPEN, NORMAL CLOSED AND
MIXED TYPE RELAYS ........................................ 81
TYPE OF STANDARDIZED RELAYS .................. 81
FUSE BLOCK - JUNCTION BOX (J/B) .................... 83
Terminal Arrangement ............................................. 83
FUSE, FUSIBLE LINK AND RELAY BOX ................ 84
Terminal Arrangement ............................................. 84

POWER SUPPLY ROUTING CIRCUIT
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Revision: 2004 November 2004 FX35/FX45
Fuse AKS007VW

If fuse is blown, be sure to eliminate cause of incident before
installing new fuse.

Use fuse of specified rating. Never use fuse of more than speci-
fied rating.

Do not partially install fuse; always insert it into fuse holder prop-
erly.

Remove fuse for “ELECTRICAL PARTS (BAT)” if vehicle is not
used for a long period of time.
Fusible LinkAKS007VX
A melted fusible link can be detected either by visual inspection or by
feeling with finger tip. If its condition is questionable, use circuit
tester or test lamp.
CAUTION:

If fusible link should melt, it is possible that critical circuit
(power supply or large current carrying circuit) is shorted.
In such a case, carefully check and eliminate cause of inci-
dent.

Never wrap outside of fusible link with vinyl tape. Important:
Never let fusible link touch any other wiring harness, vinyl
or rubber parts.
Circuit Breaker AKS007VY
The PTC thermistor generates heat in response to current flow. The
temperature (and resistance) of the thermistor element varies with
current flow. Excessive current flow will cause the element's temper-
ature to rise. When the temperature reaches a specified level, the
electrical resistance will rise sharply to control the circuit current.
Reduced current flow will cause the element to cool. Resistance falls
accordingly and normal circuit current flow is allowed to resume.
CEL083
CKIM0195E
SEL109W