2006 INFINITI M35 immobilizer

TROUBLE DIAGNOSIS
EC-823
[VK45DE]
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Revision: 2006 January2006 M35/M45
1 - 6: The numbers refer to the order of inspection.Cooling
Radiator/Hose/Radiator filler cap
55555 55 45CO-43
,
CO-47
Thermostat 5CO-55
Water pumpCO-53
Water galleryCO-38
Cooling fan
5CO-51
Coolant level (Low)/Contami-
nated coolantCO-40
IVIS (INFINITI Vehicle Immobilizer System —
NATS)11EC-763 or
BL-248
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

PRECAUTIONS
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[VQ35DE]
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Revision: 2006 January2006 M35/M45
[VQ35DE]PRECAUTIONSPFP:00001
Precautions for Procedures without Cowl Top CoverNBS004MF
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectNBS005RR
NOTE:
This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
Remove and install all control units after disconnecting both battery cables with the ignition knob in the
LOCK position.
Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the
ACC position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the
LOCK position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for Drain Engine Coolant and Engine OilNBS004MH
Drain engine coolant and engine oil when the engine is cooled.
Precautions for Disconnecting Fuel PipingNBS004MI
Before starting work, make sure no fire or spark producing items are in the work area.
Release fuel pressure before disconnecting and disassembly.
After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyNBS004MJ
When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or unin-
structed operations.
Exercise maximum care to avoid damage to mating or sliding surfaces.
PIIB3706J

PRECAUTIONS
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Revision: 2006 January2006 M35/M45
[VK45DE]PRECAUTIONSPFP:00001
Precautions for Procedures without Cowl Top CoverNBS004O5
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectNBS005RS
NOTE:
This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
Remove and install all control units after disconnecting both battery cables with the ignition knob in the
LOCK position.
Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the
ACC position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the
LOCK position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for Drain Engine Coolant and Engine OilNBS004O7
Drain engine coolant and engine oil when engine is cooled.
Precautions for Disconnecting Fuel PipingNBS004O8
Before starting work, make sure no fire or spark producing items are in the work area.
Release fuel pressure before disconnecting and disassembly.
After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyNBS004O9
When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or unin-
structed operations.
Exercise maximum care to avoid damage to mating or sliding surfaces.
Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.
PIIB3706J

GI-1
GENERAL INFORMATION
A GENERAL INFORMATION
CONTENTS
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GI
SECTION GI
Revision: 2006 January2006 M35/M45
GENERAL INFORMATION
PRECAUTIONS .......................................................... 3
Description ............................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS) (If
Equipped) ................................................................. 3
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 4
OPERATION PROCEDURE ................................. 4
Precautions for Procedures without Cowl Top Cover ..... 4
General Precautions ................................................ 4
Precautions for Three Way Catalyst ......................... 6
Precautions for Fuel (Unleaded Premium Gasoline
Recommended) ...................................................
..... 6
Precautions for Fuel (Unleaded Premium Gasoline
Required) ................................................................. 6
Precautions for Multiport Fuel Injection System or
Engine Control System ............................................ 7
Precautions for Hoses .............................................. 7
HOSE REMOVAL AND INSTALLATION ............... 7
HOSE CLAMPING ................................................ 7
Precautions for Engine Oils ...................................... 8
HEALTH PROTECTION PRECAUTIONS ............. 8
Precautions for Air Conditioning ............................... 8
HOW TO USE THIS MANUAL ................................... 9
Description ............................................................... 9
Terms ....................................................................... 9
Units ......................................................................... 9
Contents ................................................................... 9
Relation between Illustrations and Descriptions .... 10
Components ............................................................ 11
SYMBOLS ........................................................
.... 11
How to Follow Trouble Diagnoses .......................... 12
DESCRIPTION .................................................... 12
HOW TO FOLLOW TEST GROUPS IN TROU-
BLE DIAGNOSES ............................................... 12
HARNESS WIRE COLOR AND CONNECTOR
NUMBER INDICATION ....................................... 13KEY TO SYMBOLS SIGNIFYING MEASURE-
MENTS OR PROCEDURES ............................... 14
How to Read Wiring Diagrams ............................... 16
CONNECTOR SYMBOLS ................................... 16
SAMPLE/WIRING DIAGRAM - EXAMPL - .......... 17
DESCRIPTION .................................................... 18
Abbreviations .......................................................... 24
SERVICE INFORMATION FOR ELECTRICAL INCI-
DENT ......................................................................... 25
How to Check Terminal ........................................... 25
CONNECTOR AND TERMINAL PIN KIT ............ 25
HOW TO PROBE CONNECTORS ...................... 25
How to Perform Efficient Diagnosis for an Electrical
Incident ................................................................... 28
WORK FLOW ...................................................... 28
INCIDENT SIMULATION TESTS ........................ 28
CIRCUIT INSPECTION ....................................
... 31
Control Units and Electrical Parts ........................... 36
PRECAUTIONS .................................................. 36
CONSULT-II CHECKING SYSTEM .......................... 38
Description .............................................................. 38
Function and System Application ........................... 38
Nickel Metal Hydride Battery Replacement ............ 39
Checking Equipment .............................................. 39
CONSULT-II Start Procedure .................................. 39
CONSULT-II Data Link Connector (DLC) Circuit .... 40
INSPECTION PROCEDURE .............................. 40
CIRCUIT DIAGRAM ............................................ 41
LIFTING POINT ......................................................... 42
Special Service Tools ............................................. 42
Garage Jack and Safety Stand and 2-Pole Lift ....... 42
Board-On Lift .......................................................... 43
TOW TRUCK TOWING ............................................. 44
Tow Truck Towing ................................................... 44
2WD MODELS .................................................... 44
AWD MODELS .................................................... 45
Vehicle Recovery (Freeing a Stuck Vehicle) ........... 45
FRONT ................................................................ 45
REAR .................................................................. 45
AUTOMATIC TRANSMISSION ........................... 46

PRECAUTIONS
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Revision: 2006 January2006 M35/M45
PRECAUTIONSPFP:00001
DescriptionNAS00073
Observe the following precautions to ensure safe and proper servicing. These precautions are not
described in each individual section.
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NAS00074
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WAR NING :
To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for NVIS/IVIS (NISSAN/INFINITI VEHICLE IMMOBILIZER SYSTEM -
NATS) (If Equipped)
NAS00075
NVIS/IVIS (NATS) will immobilize the engine if someone tries to start it without the registered key of NVIS/IVIS
(NATS).
Both of the originally supplied ignition key IDs have been NVIS/IVIS (NATS) registered.
The security indicator is located on the instrument panel. The indicator blinks when the immobilizer system is
functioning.
Therefore, NVIS/IVIS (NATS) warns outsiders that the vehicle is equipped with the anti-theft system.
When NVIS/IVIS (NATS) detects trouble, the security indicator lamp lights up while ignition switch is in
"ON" position.
This lighting up indicates that the anti-theft is not functioning, so prompt service is required.
When servicing NVIS/IVIS (NATS) (trouble diagnoses, system initialization and additional registration of
other NVIS/IVIS (NATS) ignition key IDs), CONSULT-II hardware and CONSULT-II NVIS/IVIS (NATS)
software is necessary.
Regarding the procedures of NVIS/IVIS (NATS) initialization and NVIS/IVIS (NATS) ignition key ID regis-
tration, refer to CONSULT-II operation manual, NVIS/IVIS (NATS).
Therefore, CONSULT-II NVIS/IVIS (NATS) software (program card and operation manual) must be kept
strictly confidential to maintain the integrity of the anti-theft function.
When servicing NVIS/IVIS (NATS) (trouble diagnoses, system initialization and additional registration of
other NVIS/IVIS (NATS) ignition key IDs), it may be necessary to re-register original key identification.
Therefore, be sure to receive all keys from vehicle owner. A maximum of four or five key IDs can be regis-
tered into NVIS/IVIS (NATS).
When failing to start the engine first time using the key of NVIS/IVIS (NATS), start as follows.
1. Leave the ignition key in "ON" position for approximately 5 seconds.
2. Turn ignition key to "OFF" or "LOCK" position and wait approximately 5 seconds.
3. Repeat step 1 and 2 again.
4. Restart the engine while keeping the key separate from any others on key-chain.

GI-4
PRECAUTIONS
Revision: 2006 January2006 M35/M45
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectNAS0008J
NOTE:
This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
Remove and install all control units after disconnecting both battery cables with the ignition knob in the
LOCK position.
Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the
ACC position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the
LOCK position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for Procedures without Cowl Top CoverNAS00077
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
General PrecautionsNAS00078
Do not operate the engine for an extended period of time without
proper exhaust ventilation.
Keep the work area well ventilated and free of any flammable
materials. Special care should be taken when handling any flam-
mable or poisonous materials, such as gasoline, refrigerant gas,
etc. When working in a pit or other enclosed area, be sure to
properly ventilate the area before working with hazardous mate-
rials.
Do not smoke while working on the vehicle.
PIIB3706J
SGI285

GI-38
CONSULT-II CHECKING SYSTEM
Revision: 2006 January2006 M35/M45
CONSULT-II CHECKING SYSTEMPFP:00000
DescriptionNAS0007S
CONSULT-II is a hand-held type tester. When it is connected with a diagnostic connector equipped on the
vehicle side, it will communicate with the control unit equipped in the vehicle and then enable various
kinds of diagnostic tests.
Refer to “CONSULT-II Software Operation Manual” for more information.
Function and System Application NAS0007T
x: Applicable
*: NISSAN Anti-Theft System (INFINITI/NISSAN Vehicle Immobilizer System) Diagnostic test
modeFunction
ENGINE
A/T
AIR BAG
METER A/C AMP
BCM
AUTO DRIVE POS.
ABS (Including VDC)
NATS (IVIS/NATS) *
IPDM E/R
ICC
ALL MODE AWD/4WD
INTELLIGENT KEY
LDW
AIR PRESSURE MONITOR
RAS/HICAS
ADAPTIVE LIGHT
PRECRASH SEATBELT
MULTI AV
Work supportThis mode enables a technician to adjust
some devices faster and more accurately by
following the indications on CONSULT-II.x - - - xxx -- x- xxx- x- -
Self-diagnostic
resultsSelf-diagnostic results can be read and
erased quickly.xxxxxxxxxxxxxxxxxx
Trouble diagnos-
tic recordCurrent self-diagnostic results and all trouble
diagnostic records previously stored can be
read.--x---------------
Data monitor Input/Output data in the ECU can be read. x x - x x x x - x xxxxxxxxx
CAN diagnosis
support monitorThe condition of CAN communication line
can be read.xx- xxxx- xxxxxxxxxx
Active testDiagnostic Test Mode in which CONSULT-II
drives some actuators apart from the ECUs
and also shifts some parameters in a speci-
fied range.x- - - xxx -xxxxxxxx- -
DTC & SRT con-
firmationThe results of SRT (System Readiness Test)
and the self-diagnosis status/result can be
confirmed.x- ----------------
DTC work sup-
portThe operating condition to confirm Diagnosis
Trouble Codes can be selected.xx----------------
ECU (ECM/TCM)
part numberECU (ECM/TCM) part number can be read. xx - - xxx -- xxxxxxxxx
ECU discrimi-
nated No.Classification number of a replacement ECU
can be read to prevent an incorrect ECU from
being installed.-- x---------------
Function testThis mode can show results of self-diagnosis
of ECU with either 'OK' or 'NG'. For engines,
more practical tests regarding sensors/
switches and/or actuators are available.xxx---x-----------
Control unit ini-
tializationAll registered ignition key IDs in NATS com-
ponents can be initialized and new IDs can
be registered.-- -----x----------
AV COMM moni-
torThe condition of AV communication can be
Indicated.------------ ---- -x

IDX-5
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IDX
ALPHABETICAL INDEX
EC-310, EC-1009, EC-1020, EC-1033
Heated oxygen sensor 2 heater (bank 1) ....... EC-189,
EC-911
Heated oxygen sensor 2 heater (bank 2) ....... EC-189,
EC-911
Heated seat ..................................................... SE-143
Heater and cooling unit (Heater core) ........... ATC-135
HFC134a (R134a) system precaution ............... ATC-6
HFC134a (R134a) system service procedure ATC-151
HFC134a (R134a) system service tools .......... ATC-17
HFC134a system service equipment precaution ..........
ATC-13
High and low reverse clutch solenoid valve .... AT-159,
AT-161
Hood ................................................................... BL-15
Horn ................................................................. WW-53
HORN - Wiring diagram ................................... WW-53
How to erase DTC for OBD system ..... EC-67, EC-778
HSEAT - Wiring diagram ................................. SE-146
I
IATS - Wiring diagram ....................... EC-223
, EC-945
ICC - Wiring diagram ....................................... ACS-21
ICC/BS - Wiring diagram ................. EC-578, EC-1304
ICC/SW - Wiring diagram ................ EC-563, EC-1289
ICCBOF - Wiring diagram ................ EC-700, EC-1442
Idle air volume learning ....................... EC-96, EC-807
Idle mixture ratio .................................. EC-84, EC-795
Idle speed .............................. EC-77, EC-788, EC-793
Idle speed control (ISC) .... EC-483, EC-485, EC-1202,
EC-1204
Ignition coil ....................................... EC-666, EC-1407
Ignition coil(VK45DE) ...................................... EM-190
Ignition coil(VQ35DE) ........................................ EM-42
Ignition control system ..................... EC-666, EC-1407
Ignition timing ........................ EC-77, EC-788, EC-793
IGNSYS - Wiring diagram ................ EC-667, EC-1408
Illumination ....................................................... LT-295
Illumination control ................. LT-291, LT-292, LT-293
In vehicle sensor ........................... ATC-116, ATC-127
INJECT - Wiring diagram ................. EC-680, EC-1421
Injector ............................................................. EC-679
Input clutch solenoid valve ................. AT-147, AT-149
Instrument panel .................................................. IP-10
Intake air temperature sensor ........... EC-221, EC-241,
EC-943
, EC-964
Intake door control linkage adjustment ............ ATC-88
Intake door motor ........................... ATC-86, ATC-133
Intake manifold collector(VQ35DE) ................... EM-19
Intake manifold(VK45DE) ................................ EM-179
Intake manifold(VQ35DE) .................................. EM-24
Intake sensor ................................ ATC-122, ATC-129
Intake valve timing control (Bank 1) .. EC-178, EC-891
Intake valve timing control (Bank 2) .. EC-178, EC-891
Intake valve timing control position sensor (Bank 1) ....
EC-1228
Intake valve timing control position sensor (Bank 2) ....
EC-1228
Intake valve timing control solenoid valve (Bank 1) ......
EC-197
, EC-920
Intake valve timing control solenoid valve (Bank 2) ......
EC-197
, EC-920
Integrated homelink transmitter ....................... BL-281
Intelligent cruise control (ICC) system .............. ACS-6
Interior ................................................................. EI-37
Interior lamp ...................................................... LT-267
IPDM (Intelligent power distribution module engine
room) ................................................................. PG-18
IVCB1 - Wiring diagram ..................... EC-198, EC-921
IVCB2 - Wiring diagram ..................... EC-200, EC-923
IVCSB1 - Wiring diagram ............................... EC-1229
IVCSB2 - Wiring diagram ............................... EC-1231
IVIS (Infiniti vehicle immobilizer system) precautions ...
GI-3
IVTB1 - Wiring diagram ................................... EC-894
IVTB2 - Wiring diagram ................................... EC-896
K
Knock sensor (KS) ........................... EC-371
, EC-1094
KS - Wiring diagram ......................... EC-372, EC-1095
L
LAN system circuit ........................................... ATC-70
Lane Departure Warning System ....................... DI-78
Laser beam aiming adjustment ....................... ACS-13
Latch (lower anchors and tether for children) system ...
SB-36
LDW .................................................................... DI-78
LDW - Wiring Diagram ........................................ DI-89
License lamp ..................................................... LT-249
Line pressure solenoid valve ........................... AT-130
Line pressure test (A/T) ..................................... AT-55
Liquid gasket application ......................... EM-7, LU-22
Liquid gasket application(VQ35DE) ........... LU-3, CO-3
Location of electrical units ................................. PG-96
Low coast brake solenoid valve ......... AT-163, AT-165
Low tire pressure warning system ...................... WT-9
Lubricant (R134a) A/C ..................................... ATC-26
Lubrication circuit (engine)(VK45DE) ................ LU-24
Lubrication circuit (engine)(VQ35DE) .................. LU-5
Lubrication oil A/C .......................................... ATC-174
M
MAFS - Wiring diagram ..... EC-208
, EC-216, EC-930,
EC-938
Magnet clutch .................................................. ATC-94
MAIN - Wiring diagram ........ EC-166, EC-879, AT-180
Maintenance (engine)(VQ35DE) ...................... MA-14
Major overhaul (Final drive) .............. FFD-15, RFD-18
Major overhaul (Transfer) .................................. TF-45
Malfunction indicator lamp (MIL) .......... EC-69, EC-780
Manual mode switch ........................................ AT-167
Mass air flow sensor (MAFS) ............ EC-205, EC-214,
EC-927
, EC-936