2007 INFINITI M35 belt

DI-70
WARNING CHIME
Revision: 2007 April2007 M35/M45
Trouble DiagnosisNKS003V7
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom and customer complaint.
2. Understand the outline of system. Refer to DI-59, "
System Description" .
3. Perform the preliminary inspection. Refer to DI-70, "
PRELIMINARY INSPECTION" .
4. Referring to trouble diagnosis chart, make sure the cause of the malfunction and repair or replace applica-
ble parts. Refer to DI-70, "
SYMPTOM CHART" .
5. Does warning chime system operate normally? If yes, GO TO 6. If no, GO TO 3.
6. INSPECTION END
PRELIMINARY INSPECTION
1. CHECK BCM (CONSULT-II)
Perform self-diagnosis of BCM. Refer to BCS-12, "
CONSULT-II Function (BCM)" .
Self
-diagnostic results content
No malfunction detected>> GO TO 2.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
2. CHECK UNIFIED METER AND A/C AMP. (CONSULT-II)
Perform self-diagnosis of unified meter and A/C amp. Refer to DI-69, "
CONSULT-II Function (METER A/C
AMP)" .
Self
-diagnostic results content
No malfunction detected>> INSPECTION END
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
SYMPTOM CHART
Meter Buzzer Circuit InspectionNKS004F7
1. CHECK BATTERY POWER SUPPLY OF COMBINATION METER
Check battery power supply of combination meter. Refer to DI-19, "
Power Supply and Ground Circuit Inspec-
tion" in combination meter.
OK or NG
OK >> GO TO 2.
NG >> Repair battery power supply circuit of combination meter.
Symptom Diagnosis/Service procedure
All warning chime systems do not activate. Perform DI-70, "
Meter Buzzer Circuit Inspection" .
Light warning chime does not activate.Perform the following inspections.
1.DI-71, "
Lighting Switch Signal Inspection"
2.DI-72, "Front Door Switch (Driver Side) Signal Inspection"
Replace BCM, found normal function in the above inspections.
Seat belt warning chime does not activate.Perform DI-73, "
Seat Belt Buckle Switch Signal Inspection" .
Replace BCM, found normal function in the above inspection.

WARNING CHIME
DI-71
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Revision: 2007 April2007 M35/M45
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “METER A/C AMP” on CONSULT-II.
2. With “DATA MONITOR”, confirm “BUZZER” under the condition
of buzzer input. (Seat belt warning chime, turn signal lamp oper-
ate, etc.)
OK or NG
OK >> GO TO 3.
NG >> Replace BCM. Refer to BCS-15, "
Removal and Installa-
tion of BCM" .
3. REPLACE COMBINATION METER
Replace combination meter.
Does meter buzzer beep?
YES >> INSPECTION END
NO >> Replace unified meter and A/C map.
Lighting Switch Signal InspectionNKS003V9
1. CHECK BCM INPUT SIGNAL
1. Select “BCM” on CONSULT-II.
2. With “DATA MONITOR” of “BUZZER”, confirm “TAIL LAMP SW”
when the lighting switch is operated.
OK or NG
OK >> Lighting switch signal is OK. Return to DI-70, "SYMP-
TOM CHART" .
NG >> Check the lighting switch. Refer to LT- 2 3 0 , "
Switch Cir-
cuit Inspection" . “BUZZER”
Under the condition of buzzer input : ON
Except above : OFF
PKIA2063E
“TAIL LAMP SW”
Lighting switch ON (1st position) : ON
Lighting switch OFF : OFF
PKIC0697E

WARNING CHIME
DI-73
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Seat Belt Buckle Switch Signal InspectionNKS003VB
1. CHECK BCM INPUT SIGNAL
1. Select “BCM” on CONSULT-II.
2. With “DATA MONITOR” of “BUZZER”, confirm “BUCKLE SW”
when the seat belt is fastened/unfastened.
OK or NG
OK >> Seat belt buckle switch signal is OK. Return to DI-70,
"SYMPTOM CHART" .
NG >> GO TO 2.
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between unified meter and A/C amp. harness
connector and ground.
OK or NG
OK >> Replace unified meter and A/C amp.
NG >> GO TO 3.
3. CHECK SEAT BELT BUCKLE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector and seat belt
buckle switch (driver side) connector.
3. Check continuity between unified meter and A/C amp. harness
connector (A) and seat belt buckle switch (driver side) harness
connector (B).
4. Check harness continuity between unified meter and A/C amp.
harness connector (A) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.“BUCKLE SW”
When seat belt is fastened : OFF
When seat belt is unfastened : ON
SKIA8674E
Terminals
Condition
Voltage
(Approx.) (+)
(–)
Unified meter and
A/C amp. connectorTerminalSeat belt
(driver side):
M64 9 GroundFasten 12 V
Unfasten 0 V
PKIB7664E
AB
Continuity
Connector Terminal Connector Terminal
M64 9 B203 1 Yes
A
GroundContinuity
Connector Terminal
M64 9 No
PKIB7666E

DI-74
WARNING CHIME
Revision: 2007 April2007 M35/M45
4. CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE)
Check seat belt buckle switch (driver side). Refer to DI-74, "
SEAT BELT BUCKLE SWITCH (DRIVER SIDE)" .
OK or NG
OK >> Check seat belt buckle switch (driver side) ground circuit.
NG >> Replace seat belt buckle switch (driver side).
Electrical Component InspectionNKS003VC
FRONT DOOR SWITCH (DRIVER SIDE)
Check continuity between terminal 2 and door switch case ground.
SEAT BELT BUCKLE SWITCH (DRIVER SIDE)
Check continuity between terminals 1 and 2.
Terminal Condition Continuity
2Door switch
case groundWhen door switch is released. Yes
When door switch is pushed. No
PKIC0245E
Terminal Condition Continuity
12When seat belt is unfastened. Yes
When seat belt is fastened. No
PKIB7665E

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION EC
A
EC
Revision: 2007 April2007 M35/M45
ENGINE CONTROL SYSTEM
VQ35DE
INDEX FOR DTC ...................................................... 16
DTC No. Index ....................................................... 16
Alphabetical Index .................................................. 20
PRECAUTIONS ........................................................ 24
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 24
Precautions for Procedures without Cowl Top Cover ... 24
On Board Diagnostic (OBD) System of Engine and
A/T .......................................................................... 24
Precaution .............................................................. 25
PREPARATION ......................................................... 28
Special Service Tools ............................................. 28
Commercial Service Tools ...................................... 29
ENGINE CONTROL SYSTEM .................................. 30
System Diagram ..................................................... 30
Multiport Fuel Injection (MFI) System .................... 31
Electronic Ignition (EI) System ............................... 33
Fuel Cut Control (At No Load and High Engine
Speed) .................................................................... 34
AIR CONDITIONING CUT CONTROL ..................... 35
Input/Output Signal Chart ....................................... 35
System Description ................................................ 35
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ... 36
System Description ................................................ 36
Component Description .......................................... 37
CAN COMMUNICATION .......................................... 38
System Description ................................................ 38
EVAPORATIVE EMISSION SYSTEM ....................... 39
Description ............................................................. 39
Component Inspection ........................................... 42
Removal and Installation ........................................ 43
How to Detect Fuel Vapor Leakage ....................... 43
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ...................................................................... 46
System Description ................................................ 46
Diagnostic Procedure ............................................. 47
Component Inspection ........................................... 49POSITIVE CRANKCASE VENTILATION ................. 51
Description .............................................................. 51
Component Inspection ............................................ 51
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ........................................................................ 53
Description .............................................................. 53
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 54
Introduction ............................................................. 54
Two Trip Detection Logic ........................................ 54
Emission-Related Diagnostic Information ............... 55
Malfunction Indicator Lamp (MIL) ........................... 70
OBD System Operation Chart ................................ 73
BASIC SERVICE PROCEDURE ............................... 78
Basic Inspection ..................................................... 78
Idle Speed and Ignition Timing Check .................... 83
Procedure After Replacing ECM ............................ 85
VIN Registration ..................................................... 85
Accelerator Pedal Released Position Learning ...... 86
Throttle Valve Closed Position Learning ................. 86
Idle Air Volume Learning ........................................ 86
Fuel Pressure Check .............................................. 88
TROUBLE DIAGNOSIS ............................................ 90
Trouble Diagnosis Introduction ............................... 90
DTC Inspection Priority Chart ................................. 96
Fail-Safe Chart ....................................................... 98
Symptom Matrix Chart ............................................ 99
Engine Control Component Parts Location ..........103
Vacuum Hose Drawing ..........................................111
Circuit Diagram .....................................................112
ECM Harness Connector Terminal Layout ...........114
ECM Terminals and Reference Value ...................114
CONSULT-II Function (ENGINE) ..........................123
Generic Scan Tool (GST) Function .......................135
CONSULT-II Reference Value in Data Monitor .....138
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................141
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .143
Description ............................................................143
Testing Condition ..................................................143

EC-8Revision: 2007 April2007 M35/M45 .683
Wiring Diagram .....................................................684
Diagnostic Procedure ...........................................685
Component Inspection ..........................................689
IGNITION SIGNAL ..................................................691
Component Description ........................................691
Wiring Diagram .....................................................692
Diagnostic Procedure ...........................................697
Component Inspection ..........................................702
Removal and Installation ......................................703
REFRIGERANT PRESSURE SENSOR ..................704
Component Description ........................................704
Wiring Diagram .....................................................705
Diagnostic Procedure ...........................................706
Removal and Installation ......................................708
SNOW MODE SWITCH ...........................................709
Description ............................................................709
CONSULT-II Reference Value in the Data Monitor
Mode .....................................................................709
Wiring Diagram .....................................................710
Diagnostic Procedure ...........................................711
Component Inspection ..........................................713
MIL AND DATA LINK CONNECTOR ......................714
Wiring Diagram .....................................................714
SERVICE DATA AND SPECIFICATIONS (SDS) ....716
Fuel Pressure .......................................................716
Idle Speed and Ignition Timing .............................716
Calculated Load Value ..........................................716
Mass Air Flow Sensor ...........................................716
Intake Air Temperature Sensor .............................716
Engine Coolant Temperature Sensor ...................716
Fuel Tank Temperature Sensor ............................716
Crankshaft Position Sensor (POS) .......................716
Camshaft Position Sensor (PHASE) ....................716
A/F Sensor 1 Heater .............................................716
Heated Oxygen Sensor 2 Heater .........................717
Throttle Control Motor ...........................................717
Fuel Injector ..........................................................717
Fuel Pump ............................................................717
VK45DE
INDEX FOR DTC .....................................................718
DTC No. Index ......................................................718
Alphabetical Index ................................................722
PRECAUTIONS .......................................................726
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................726
Precautions for Procedures without Cowl Top Cover .726
On Board Diagnostic (OBD) System of Engine and
A/T ........................................................................726
Precaution ............................................................727
PREPARATION .......................................................730
Special Service Tools ...........................................730
Commercial Service Tools ....................................731
ENGINE CONTROL SYSTEM ................................732
System Diagram ...................................................732
Multiport Fuel Injection (MFI) System ...................733Electronic Ignition (EI) System ..............................735
Fuel Cut Control (At No Load and High Engine
Speed) ..................................................................736
AIR CONDITIONING CUT CONTROL ....................737
Input/Output Signal Chart .....................................737
System Description ...............................................737
AUTOMATIC SPEED CONTROL DEVICE (ASCD) .738
System Description ...............................................738
Component Description ........................................739
CAN COMMUNICATION .........................................740
System Description ...............................................740
EVAPORATIVE EMISSION SYSTEM .....................741
Description ............................................................741
Component Inspection ..........................................744
Removal and Installation .......................................745
How to Detect Fuel Vapor Leakage ......................745
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ....................................................................748
System Description ...............................................748
Diagnostic Procedure ............................................749
Component Inspection ..........................................751
POSITIVE CRANKCASE VENTILATION ................753
Description ............................................................753
Component Inspection ..........................................753
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ......................................................................755
Description ............................................................755
ON BOARD DIAGNOSTIC (OBD) SYSTEM ...........756
Introduction ...........................................................756
Two Trip Detection Logic .......................................756
Emission-Related Diagnostic Information .............757
Malfunction Indicator Lamp (MIL) .........................772
OBD System Operation Chart ...............................774
BASIC SERVICE PROCEDURE .............................780
Basic Inspection ....................................................780
Idle Speed and Ignition Timing Check ..................785
Procedure After Replacing ECM ...........................787
VIN Registration ....................................................787
Accelerator Pedal Released Position Learning .....788
Throttle Valve Closed Position Learning ...............788
Idle Air Volume Learning .......................................788
Fuel Pressure Check ............................................790
TROUBLE DIAGNOSIS ..........................................792
Trouble Diagnosis Introduction .............................792
DTC Inspection Priority Chart ...............................798
Fail-Safe Chart ......................................................800
Symptom Matrix Chart ..........................................801
Engine Control Component Parts Location ...........805
Vacuum Hose Drawing .........................................814
Circuit Diagram .....................................................815
ECM Harness Connector Terminal Layout ............817
ECM Terminals and Reference Value ...................817
CONSULT-II Function (ENGINE) ..........................826
Generic Scan Tool (GST) Function .......................838
CONSULT-II Reference Value in Data Monitor .....841
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................845
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .847
Description ............................................................847

EC-24
[VQ35DE]
PRECAUTIONS
Revision: 2007 April2007 M35/M45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NBS004RW
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.
WARNING:

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 Procedures without Cowl Top CoverNBS004RX
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
On Board Diagnostic (OBD) System of Engine and A/TNBS004RY
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-104, "
HAR-
NESS CONNECTOR" .

Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system,
etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PIIB3706J

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-149
[VQ35DE]
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16. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK >>INSPECTION END
NG >> Detect malfunctioning part according to EC-99, "
Symptom Matrix Chart" .
17. CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and
make sure that the indication is within the SP value.
OK or NG
OK >>INSPECTION END
NG (More than the SP value)>>GO TO 18.
NG (Less than the SP value)>>GO TO 25.
18. DETECT MALFUNCTIONING PART
1. Check for the cause of large engine friction. Refer to the following.
–Engine oil level is too high
–Engine oil viscosity
–Belt tension of power steering, alternator, A/C compressor, etc. is excessive
–Noise from engine
–Noise from transmission, etc.
2. Check for the cause of insufficient combustion. Refer to the following.
–Valve clearance malfunction
–Intake valve timing control function malfunction
–Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 30.
19. CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.

Crushed air ducts

Malfunctioning seal of air cleaner element

Uneven dirt of air cleaner element

Improper specification of intake air system
OK or NG
OK >> GO TO 21.
NG >> Repair or replace malfunctioning part, and then GO TO 20.
PBIB2332E