Compartment compartment INFINITI FX35 2005 User Guide

BL-4Revision: 2005 July 2005 FX
CHECK .............................................................
.212
Diagnostic Procedure 4 ....................................... .212
VEHICLE SECURITY HORN ALARM CHECK . 212
Diagnostic Procedure 5 ....................................... .212
VEHICLE SECURITY HEADLAMP ALARM
CHECK ............................................................. .212
Diagnostic Procedure 6 ....................................... .212
DOOR LOCK AND UNLOCK SWITCH CHECK .212
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... .213
Component Parts and Harness Connector Location .213
System Description .............................................. .214
DESCRIPTION ................................................. .214
SECURITY INDICATOR ................................... .214
System Composition ............................................ .215
ECM Re-Communicating Function ...................... .215
Wiring Diagram – NATS – .................................... .216
MODELS WITH INTELLIGENT KEY SYSTEM . 216
MODELS WITHOUT INTELLIGENT KEY SYS-
TEM .................................................................. .218
Terminals and Reference Value for Steering Lock
Unit/with Intelligent Key System .......................... .219
Terminals and Reference Value for Intelligent Key
Unit/with Intelligent Key System .......................... .219
Terminals and Reference Value for BCM ............. .220
CONSULT-II ......................................................... .221
CONSULT-II INSPECTION PROCEDURE ....... .221
CONSULT-II DIAGNOSTIC TEST MODE FUNC-
TION ................................................................. .222
HOW TO READ SELF-DIAGNOSTIC RESULTS .222
NATS SELF-DIAGNOSTIC RESULT ITEM
CHART ............................................................. .223
Diagnosis Procedure ........................................... .224
WORK FLOW ................................................... .224
Trouble Diagnosis Symptom Chart ...................... .225
Security Indicator Inspection ............................... .225
Diagnostic Procedure 1 ....................................... .226
Diagnostic Procedure 2 ....................................... .227
Diagnostic Procedure 3 ....................................... .228
Diagnostic Procedure 4 ....................................... .229
Diagnostic Procedure 5 ....................................... .230
Diagnostic Procedure 6 ....................................... .231
Diagnostic Procedure 7 ....................................... .233
Removal and Installation NATS Antenna Amp. ... .234
REMOVAL ........................................................ .234
INSTALLATION ................................................. .234 INTEGRATED HOMELINK TRANSMITTER ..........
.235
Wiring Diagram —TRNSCV— ............................. .235
Trouble Diagnoses ............................................... .236
DIAGNOSTIC PROCEDURE ............................ .236
BODY REPAIR ....................................................... .238
Body Exterior Paint Color ..................................... .238
Body Component Parts ........................................ .239
UNDERBODY COMPONENT PARTS .............. .239
BODY COMPONENT PARTS ........................... .241
Corrosion Protection ............................................ .243
DESCRIPTION ................................................. .243
ANTI-CORROSIVE WAX .................................. .244
UNDERCOATING ............................................. .245
STONE GUARD COAT ..................................... .246
Body Sealing ........................................................ .247
DESCRIPTION ................................................. .247
Body Construction ................................................ .250
BODY CONSTRUCTION .................................. .250
Body Alignment .................................................... .251
BODY CENTER MARKS .................................. .251
PANEL PARTS MATCHING MARKS ................ .252
DESCRIPTION ................................................. .253
ENGINE COMPARTMENT ............................... .254
UNDERBODY ................................................... .256
PASSENGER COMPARTMENT ....................... .258
REAR BODY ..................................................... .260
Handling Precautions For Plastics ....................... .262
HANDLING PRECAUTIONS FOR PLASTICS . .262
LOCATION OF PLASTIC PARTS ..................... .263
Precautions In Repairing High Strength Steel ...... .265
HIGH STRENGTH STEEL (HSS) USED IN NIS-
SAN VEHICLES ................................................ .265
Replacement Operations ..................................... .268
DESCRIPTION ................................................. .268
HOODLEDGE ................................................... .271
FRONT SIDE MEMBER ................................... .273
FRONT SIDE MEMBER (PARTIAL REPLACE-
MENT) ............................................................... .275
FRONT PILLAR ................................................ .277
CENTER PILLAR .............................................. .279
OUTER SILL ..................................................... .281
REAR FENDER ................................................ .283
REAR PANEL ................................................... .285
REAR END CROSSMEMBER .......................... .287
REAR FLOOR REAR ........................................ .289
REAR SIDE MEMBER EXTENSION ................ .292

BL-254
BODY REPAIR
Revision: 2005 July2005 FX
ENGINE COMPARTMENT
Measurement
SIIA2260E

BL-258
BODY REPAIR
Revision: 2005 July2005 FX
PASSENGER COMPARTMENT
Measurement
SIIA2264E

SYSTEM DESCRIPTION BRC-9
[VDC/TCS/ABS]
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Revision: 2005 July 2005 FX

When starting engine, or just after starting vehicle, brake pedal may vibrate or motor operating noises
may be heard from engine compartment. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.
EBD FunctionAFS001SF

Electronic brake distributor is a function that detects subtle slippages between front and rear wheels dur-
ing braking, and it improves handling stability by electronically controlling the brake fluid pressure which
results in reduced rear wheel slippage.

In case of electrical system malfunction, the fail-safe function is activated, EBD and ABS becomes inoper-
ative, and ABS warning lamp and brake warning lamp are turned on.

Electrical system diagnosis by CONSULT-II is available.

During EBD operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.

When starting engine, or just after starting vehicle, brake pedal may vibrate or motor operating noises
may be heard from engine compartment. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without EBD when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.
Fail-Safe FunctionAFS001SG
VDC / TCS SYSTEM
In case of malfunction in the VDC/TCS system, VDC OFF indicator lamp and SLIP indicator lamp are turned
on, and the condition of vehicle is the same as the condition of vehicles without VDC/TCS system. In case of
malfunction in the VDC/TCS system, the ABS control continues to operate normally without VDC/TCS control.
CAUTION:
If the fail-safe function is activated, then perform the self-diagnosis for VDC/TCS/ABS control system.
ABS, EBD SYSTEM
In case of electrical malfunctions with the ABS, ABS warning lamp, VDC OFF indicator lamp and SLIP indica-
tor lamp will turn on. In case of electrical malfunctions with the EBD, brake warning lamp, ABS warning lamp,
VDC OFF indicator lamp and SLIP indicator lamp will turn on. Simultaneously, the VDC/TCS/ABS become one
of the following conditions of the fail-safe function.
1. For malfunction of ABS, only the EBD is activated and the condition of vehicle is the same condition of vehicles without TCS/ABS system.
2. For malfunction of EBD, EBD and ABS become inoperative, and the condition of vehicle is the same as the condition of vehicles without TCS/ABS, EBD system.
NOTE:
In condition 1 described above, an ABS self-diagnosis sound may be heard. That is a normal condition
because a self-diagnosis for “Ignition switch ON” and “The first starting” are being performed.

EI-8
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: 2005 July 2005 FX
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sun-visor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted under-hood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.

GI-28
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
Revision: 2005 July 2005 FX

Freezing

Water intrusion

Electrical load

Cold or hot start up
Get a thorough description of the incident from the customer. It is important for simulating the conditions of the
problem.
Vehicle Vibration
The problem may occur or become worse while driving on a rough road or when engine is vibrating (idle with
A/C on). In such a case, you will want to check for a vibration related condition. Refer to the following illustra-
tion.
CONNECTORS & HARNESS
Determine which connectors and wiring harness would affect the electrical system you are inspecting. Gently
shake each connector and harness while monitoring the system for the incident you are trying to duplicate.
This test may indicate a loose or poor electrical connection.
HINT
Connectors can be exposed to moisture. It is possible to get a thin film of corrosion on the connector termi-
nals. A visual inspection may not reveal this without disconnecting the connector. If the problem occurs inter-
mittently, perhaps the problem is caused by corrosion. It is a good idea to disconnect, inspect and clean the
terminals on related connectors in the system.
SENSORS & RELAYS
Gently apply a slight vibration to sensors and relays in the system you are inspecting.
This test may indicate a loose or poorly mounted sensor or relay.
ENGINE COMPARTMENT
There are several reasons a vehicle or engine vibration could cause an electrical complaint. Some of the
things to check for are:

Connectors not fully seated.

Wiring harness not long enough and is being stressed due to engine vibrations or rocking.

Wires laying across brackets or moving components.

Loose, dirty or corroded ground wires.

Wires routed too close to hot components.
To inspect components under the hood, start by verifying the integrity of ground connections. (Refer to Ground
Inspection described later.) First check that the system is properly grounded. Then check for loose connection
by gently shaking the wiring or components as previously explained. Using the wiring diagrams inspect the
wiring for continuity.
BEHIND THE INSTRUMENT PANEL
An improperly routed or improperly clamped harness can become pinched during accessory installation. Vehi-
cle vibration can aggravate a harness which is routed along a bracket or near a screw.
SGI839

GW-8
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: 2005 July 2005 FX
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.

SQUEAK AND RATTLE TROUBLE DIAGNOSES IP-7
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Revision: 2005 July 2005 FX
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting securing, or
insulating the component causing the noise.

PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
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Revision: 2005 July 2005 FX
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 Function (IPDM E/R) ...................... ... 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 ................................................ ... 30 GROUND ................................................................
... 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
HARNESS CONNECTOR (TAB-LOCKING

PG-18
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2005 July 2005 FX
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System DescriptionAKS005S9

IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine compartment. It controls integrated relay via IPDM E/R control cir-
cuit.

IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control, oil
pressure switch signal, and hood switch signal reception, etc.

It controls operation of each electrical part via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integrated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
1. Lamp control
Using CAN communication line, it receives signal from BCM and controls the following lamps:

Headlamps (Hi, Lo)

Parking, license plate and tail lamps

Tail lamps

Front fog lamps
2. Wiper control Using CAN communication line, it receives signals from BCM and controls the front wipers.
3. Rear window defogger relay control Using CAN communication line, it receives signals from BCM and controls the rear window defogger
relay.
4. A/C compressor control Using CAN communication line, it receives signals from ECM and controls the A/C compressor.
5. Cooling fan control Using CAN communication line, it receives signals from ECM and controls cooling fan .
6. Horn control Using CAN communication line, it receives signals from BCM and controls horn relay.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control unit using two communication lines (CAN L line, CAN H
line), it is possible to transmit maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
1. Fail-safe control

When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication recovers normally, it also returns to normal control.

Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system Fail-safe mode
Headlamp

With the ignition switch ON, the headlamp (low) is ON.

With the ignition switch OFF, the headlamp (low) is OFF.
Parking, license plate and tail lamps

With the ignition switch ON, the parking, license plate and tail lamps is ON.

With the ignition switch OFF, the parking, license plate and tail lamps is OFF.
Cooling fan

With the ignition switch ON, the cooling fan HI operates.

With the ignition switch OFF, the cooling fan stops.
Front wiper Until the ignition switch is turned off, the front wiper LO and HI remains in the same status it
was in just before fail-safe control was initiated.
Rear window defogger Rear window defogger relay is OFF
A/C compressor A/C compressor is OFF
Front fog lamps Front fog lamp is OFF