2007 INFINITI M35 diagram

BL-4Revision: 2007 April2007 M35/M45 Terminals and Reference Value for BCM ..............211
CONSULT-II Function (BCM) ................................212
CONSULT-II START PROCEDURE ..................212
DATA MONITOR ................................................212
ACTIVE TEST ...................................................212
Trouble Diagnosis .................................................213
TRUNK DOSE NOT OPEN WITH TRUNK LID
OPENER SWITCH / WITH INTELLIGENT KEY .213
VEHICLE SECURITY (THEFT WARNING) SYSTEM .217
Component Parts and Harness Connector Location .217
System Description ...............................................219
DESCRIPTION ..................................................219
POWER SUPPLY AND GROUND CIRCUIT .....220
INITIAL CONDITION TO ACTIVATE THE SYS-
TEM ...................................................................220
VEHICLE SECURITY SYSTEM ALARM OPER-
ATION ................................................................221
VEHICLE SECURITY SYSTEM DEACTIVATION .221
PANIC ALARM OPERATION .............................221
CAN Communication System Description ............221
CAN Communication Unit .....................................221
Schematic .............................................................222
Wiring Diagram — VEHSEC — ............................223
Terminals and Reference Value of BCM ...............229
Terminals and Reference Value of IPDM E/R .......229
CONSULT-II Function (BCM) ................................230
BASIC OPERATION ..........................................230
CONSULT-II APPLICATION ITEM .....................230
Trouble Diagnosis Work Flow ...............................231
Preliminary Check ................................................231
Trouble Diagnosis Symptom Chart .......................233
Diagnostic Procedure 1 ........................................234
DOOR SWITCH CHECK ...................................234
HOOD SWITCH CHECK ...................................237
TRUNK ROOM LAMP SWITCH CHECK ..........239
Diagnostic Procedure 2 ........................................241
SECURITY INDICATOR LAMP CHECK ............241
Diagnostic Procedure 3 ........................................242
FRONT DOOR KEY CYLINDER SWITCH
CHECK ..............................................................242
Diagnostic Procedure 4 ........................................242
VEHICLE SECURITY HORN ALARM CHECK . 242
Diagnostic Procedure 5 ........................................243
VEHICLE SECURITY HEADLAMP ALARM
CHECK ..............................................................243
Diagnostic Procedure 6 ........................................243
DOOR LOCK AND UNLOCK SWITCH CHECK .243
Diagnostic Procedure 7 ........................................243
VEHCLE SECURITY HAZARD LAMP ALARM
CHECK ..............................................................243
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ......................................................................244
Component Parts and Harness Connector Location .244
System Description ...............................................246
DESCRIPTION ..................................................246
PRECAUTIONS FOR KEY REGISTRATION ....246
SECURITY INDICATOR ....................................246
Operation Description ...........................................247
SYSTEM DIAGRAM ..........................................247OPERATION WHEN INSERTING TO KEY SLOT .247
OPERATION WHEN INTELLIGENT KEY IS
CARRIED ...........................................................247
PUSH-BUTTON IGNITION SWITCH OPERA-
TION PROCEDURE ..........................................247
ECM Re-Communicating Function .......................248
Schematic .............................................................250
Wiring Diagram — NATS — ..................................252
Terminals and Reference Value for Intelligent Key
Unit ........................................................................260
Terminals and Reference Value for Steering Lock
Unit ........................................................................262
Terminals and Reference Value for BCM ..............263
Terminals and Reference Value for IPDM E/R ......263
Terminals and Reference Value for PDU ..............264
CONSULT-II ..........................................................265
CONSULT-II INSPECTION PROCEDURE ........265
CONSULT-II DIAGNOSTIC TEST MODE FUNC-
TION ..................................................................266
HOW TO READ SELF-DIAGNOSTIC RESULTS .267
“NATS V5.0” SELF-DIAGNOSTIC RESULTS
ITEM CHART .....................................................268
“NATS BCM OR S/ENT” SELF-DIAGNOSTIC
RESULTS ITEM CHART ....................................268
“NATS I-KEY” SELF-DIAGNOSTIC RESULTS
ITEM CHART .....................................................269
Work Flow .............................................................269
Trouble Diagnoses Flow Chart for IVIS (NATS) ....272
Symptom Chart for Security Indicator ...................274
CONDITIONS OF VEHICLE (OPERATING CON-
DITIONS) ...........................................................274
Check Security Indicator Harness .........................274
DTC P1612 CHAIN of ECM-IMMU .......................275
DTC P1611 ID DISCORD, IMM-ECM ...................277
Removal and Installation of Key Slot ....................277
REMOVAL ..........................................................277
INSTALLATION ..................................................277
INTEGRATED HOMELINK TRANSMITTER ...........278
Wiring Diagram —TRNSCV— ..............................278
Trouble Diagnoses ................................................279
DIAGNOSTIC PROCEDURE .............................279
BODY REPAIR ........................................................281
Body Exterior Paint Color ......................................281
Body Component Parts .........................................282
UNDERBODY COMPONENT PARTS ...............282
BODY COMPONENT PARTS ............................284
Corrosion Protection .............................................286
DESCRIPTION ..................................................286
UNDERCOATING ..............................................287
Body Sealing .........................................................288
DESCRIPTION ..................................................288
Body Construction .................................................291
BODY CONSTRUCTION ...................................291
Body Alignment .....................................................292
BODY CENTER MARKS ...................................292
PANEL PARTS MATCHING MARKS .................293
DESCRIPTION ..................................................294
ENGINE COMPARTMENT ................................295
UNDERBODY ....................................................297

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POWER DOOR LOCK SYSTEM
Revision: 2007 April2007 M35/M45
Wiring Diagram —D/LOCK—NIS001WU
TIWT1286E

INTELLIGENT KEY SYSTEM
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System DescriptionNIS001X8

The Intelligent Key system is a system that makes it possible to lock and unlock the door locks (door lock/
unlock function), open the trunk (trunk open function), and start the engine (engine start function) by carry-
ing around the Intelligent Key (without some key operation), which operates based on the results of elec-
tronic ID verification using two-way communications between the Intelligent Key and the vehicle
(Intelligent Key unit).
CAUTION:
The driver should always carry the Intelligent Key

Operation of the remote controller buttons on the Intelligent Key also provides the same functions as the
remote controller entry system. (Remote keyless entry functions)

If an action that does not meet the operating conditions of the Intelligent Key system is taken, the buzzer
goes off to inform the driver. (Warning chime functions)

When a door lock is locked, unlocked or trunk open with request switch or remote controller button opera-
tion, the hazard lamps flash and the Intelligent Key warning buzzer or horn sounds (Hazard and buzzer/
horn reminder function).

Even if the Intelligent Key battery is completely discharged, the door locks can be locked and unlocked
with the mechanical key built into the Intelligent Key, and then initiates engine by inserting Intelligent Key
into key slot.

The settings for each function can be changed with the CONSULT-II.

If an Intelligent Key is lost, a new Intelligent Key can be registered. A maximum of 4 Intelligent Keys can
be registered.

It has been made possible to diagnose the system and register an Intelligent Key with the CONSULT-II.
DOOR LOCK/UNLOCK/TRUNK OPEN FUNCTION
Only when pressing the request switch, it is possible to lock and unlock the door and open the trunk by carry-
ing around the Intelligent Key (without some key operation).
System Diagram
Operation Description/Door Lock/Unlock

When the Intelligent Key unit detects that each door request switch is pressed, it starts the outside key
antenna and inside key antenna corresponding to the pressed door request switch and sends the request
signal to the Intelligent Key. And then, make sure that the Intelligent Key is near the door.

If the Intelligent Key is within the outside key antenna detection area, it receives the request signal and
sends the key ID signal to the Intelligent Key unit via remote keyless entry receiver.

Intelligent Key unit receives the key ID signal and compares it with the registered key ID.

If the key ID check result is OK, the Intelligent Key unit sends the door lock/unlock request signal to BCM
(Body control module) via CAN communication line.

Intelligent Key unit sends the door lock/unlock signal and sounds Intelligent Key buzzer warning (lock: 1
time, unlock: 2 times) at the same time.
PIIB6273E

INTELLIGENT KEY SYSTEM
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Revision: 2007 April2007 M35/M45
REMOTE KEYLESS ENTRY FUNCTIONS
The Intelligent Key has the same functions as the remote control entry system. Therefore, it can be used in the
same manner as the remote controller by operating the door lock/unlock button and trunk open button.
System Diagram
Operation Description/Door Lock/Unlock Function

When door lock/unlock button of the Intelligent Key is pressed, lock signal or unlock signal is sent from
Intelligent Key to Intelligent Key unit via remote keyless entry receiver.

Intelligent Key unit sends the door lock/unlock request signal to BCM via CAN communication line.

Intelligent Key unit sends the door lock/unlock signal to BCM.

When BCM receives the door lock/unlock signal, it operates door lock actuator, flashes the hazard lamp
(lock: 1 time, unlock: 2 times) and horn chirp signal to IPDM E/R at the same time as a reminder.

IPDM E/R honks horn (lock: 1 time) as a reminder
Operation Description/Trunk Open Function

When trunk button of the Intelligent Key is pressed, the trunk open signal is sent from the Intelligent Key to
the Intelligent Key unit via remote keyless entry receiver.

Intelligent Key unit sends trunk open request signal to BCM via CAN communication line.

When BCM receives the trunk open request signal, it operates the trunk lid opener actuator and opens the
trunk.
Operation Condition
Operation Area

Operating Range

To ensure the Intelligent Key works effectively, use within 100 cm range of each doors, however the oper-
able range might be differ by surroundings.
Selective Unlock Function
When an LOCK signal is sent from Intelligent Key, all doors will be locked.
When an UNLOCK signal is sent from Intelligent Key once, driver's door will be unlocked.
Then, if an UNLOCK signal is sent from Intelligent Key again within 5 seconds, all other door will be unlocked.
PIIB6274E
Remote controller operation Operation condition Operation
Lock

All doors closed All doors lock
Unlock

Intelligent Key is out of key slot All doors unlock
Trunk open

Press and hold the trunk open button for 0.5 second or more Trunk open

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INTELLIGENT KEY SYSTEM
Revision: 2007 April2007 M35/M45
Wiring Diagram — I/KEY—NIS001XC
TIWT1292E

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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PRECAUTIONS FOR INTELLIGENT KEY SYSTEM

In the Intelligent Key system of model Y50, the transponder (the chip for immobilizer ID verifica-
tion) is integrated into the Intelligent Key. (For the conventional models, it is integrated into the
mechanical key.) Therefore, the mechanical key cannot perform the ID verification, and thus it can-
not start the engine. Instead of it, the immobilizer ID verification can be performed by inserting the
Intelligent Key into the key slot, and then it can start the engine.

When registering the Intelligent Key, 2 registration procedures (immobilizer ID registration and
Intelligent Key ID registration) should be performed. The immobilizer ID registration is the proce-
dure that registers the ID stored into the transponder (integrated into Intelligent Key) to the BCM.
The Intelligent Key ID registration is the procedure that registers the ID to the Intelligent Key unit.
Each registration is a different procedure.

When performing the Intelligent Key ID registration only, the engine cannot be started by inserting
the key into the key slot. When performing the engine immobilizer ID registration only, the engine
cannot be started by the operation when carrying the key. The registrations of both systems
should be performed.
Operation DescriptionNIS001Y9
SYSTEM DIAGRAM
OPERATION WHEN INTELLIGENT KEY IS CARRIED
Description
1. When the push-button switch is pressed, the Intelligent Key unit signals the inside key antenna and sends
the request signal to the Intelligent Key.
2. The Intelligent Key receives the request signal and sends the Intelligent Key ID signal to the Intelligent
Key unit via the remote keyless entry receiver.
3. The Intelligent Key receives the Intelligent Key ID signal and verifies it with the registered ID.
4. If the ID is successfully verified, the Intelligent Key unit sends the steering unlock signal to the steering
lock unit. Then, it sends each power supply request signal to PDU (Power Distribution Unit) after unlock-
ing the steering lock.
5. If the Intelligent Key unit judges that the engine start condition is satisfied, it sends the starter request sig-
nal via CAN communication to IPDM E/R and turns the starter motor relay ON.
6. The steering lock unit unlocks the steering lock when receiving the signal. PDU starts the power supply
distribution according to the push-button ignition switch operation when receiving the signal. If it enters the
engine start permission mode, the power supply is supplied from PDU to the starter motor relay and the
cranking is started.
CAUTION:
If a malfunction is detected in the Intelligent Key system, the “KEY” warning lamp in the combina-
tion meter illuminates for 15 seconds. At that time, the engine cannot be started.
7. When Intelligent Key unit received feedback signal from ECM acknowledging the engine has been initi-
ated, the Intelligent Key unit sends a stop signal to IPDM E/R and stops the cranking by turning OFF the
PIIB6272E

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INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2007 April2007 M35/M45
Wiring Diagram — ENG/ST —NIS001YD
TIWT1312E

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INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2007 April2007 M35/M45
5. CHECK HARNESS CONTINUITY 2
1. Disconnect BCM connector.
2. Check continuity between BCM connector and key slot connector.
3. Check continuity between BCM connector and ground.
OK or NG
OK >> Replace BCM. Refer to "C/U INITIALIZATION", and then perform the registration again after
replacing BCM.
NG >> Repair or replace harness.
Check NATS Antenna Amp. Built In Key SlotNIS001Z8
For the circuit information of this diagnosis, refer to Engine Immobilizer System Circuit Diagram.
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key slot connector.
3. Check voltage between key slot connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Check key slot power supply circuit for open or short.
2. CHECK GROUND CIRCUIT
Check continuity between key slot connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
AB
Continuity
BCM connector Terminal Key slot connector Terminal
M1 37 M14 2 Yes
A
GroundContinuity
BCM connector Terminal
M1 37 No
PIIB6261E
Terminals
Voltage (V)
(Approx.) (+)
(–)
Key slot connector Terminal
M14 1 Ground Battery voltage
PIIB6258E
Key slot connector Terminal
GroundContinuity
M14 8 Yes
PIIB6262E