coolant temperature INFINITI M35 2007 Factory User Guide
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2007, Model line: M35, Model: INFINITI M35 2007Pages: 4647, PDF Size: 93.69 MB
Page 1417 of 4647
![INFINITI M35 2007 Factory User Guide CO-56
[VK45DE]
THERMOSTAT AND WATER CONTROL VALVE
Revision: 2007 April2007 M35/M45
5. Disconnect water suction hose from water inlet.
6. Remove water inlet and thermostat.
CAUTION:
Do not disassemble](/img/42/57024/w960_57024-1416.png "INFINITI M35 2007 Factory User Guide CO-56
[VK45DE]
THERMOSTAT AND WATER CONTROL VALVE
Revision: 2007 April2007 M35/M45
5. Disconnect water suction hose from water inlet.
6. Remove water inlet and thermostat.
CAUTION:
Do not disassemble")
CO-56
[VK45DE]
THERMOSTAT AND WATER CONTROL VALVE
Revision: 2007 April2007 M35/M45
5. Disconnect water suction hose from water inlet.
6. Remove water inlet and thermostat.
CAUTION:
Do not disassemble thermostat.
7. Remove intake manifolds (upper and lower). Refer to EM-179, "
INTAKE MANIFOLD" .
8. Disconnect radiator hose (upper) from thermostat housing.
9. Disconnect heater hoses from water outlet and heater pipe.
10. Remove thermostat housing, water outlet pipe, water connector, water control valve, water outlet and
heater pipe.
CAUTION:
Do not disassemble water control valve.
INSPECTION AFTER REMOVAL
Make sure that valves both in thermostat and water control valve are completely closing at normal tempar-
ature.
Place a thread so that it is caught in the valves of the thermostat
and water control valve. Immerse fully in a container filled with
water. Heat while stirring. (The example in the figure shows ther-
mostat.)
The valve opening temperature is the temperature at which the
valve opens and falls from the thread.
Continue heating. Check the maximum valve lift.
NOTE:
The maximum valve lift standard temperature for water control
valve is the reference value.
After checking the maximum valve lift, lower the water tempera-
ture and check the valve closing temperature.
Standard values:
If the malfunctioning condition, when closing valve at normal temperature, or measured values are out of
the standard, replace thermostat and/or water control valve.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Be careful not to spill engine coolant over engine room. Use rag to absorb engine coolant.
Thermostat and Water Control Valve
Install thermostat and water control valve with the whole circum-
ference of each flange part fit securely inside rubber ring. (The
example in the figure shows thermostat.)
SLC252B
Thermostat Water control valve
Valve opening temperature 80 - 84°C (176 - 183°F) 93.5 - 96.5°C (200 - 206°F)
Maximum valve liftMore than 10 mm/95°C
(0.39 in/203°F)More than 8 mm/108°C
(0.315 in/226°F)
Valve closing temperature 77°C (171°F) 90°C (194°F)
PBIC0157E
Page 1419 of 4647
![INFINITI M35 2007 Factory User Guide CO-58
[VK45DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2007 April2007 M35/M45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitNBS004RT
ENGINE COOLANT CAPACITY (APPROXIMATE)
Un](/img/42/57024/w960_57024-1418.png "INFINITI M35 2007 Factory User Guide CO-58
[VK45DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2007 April2007 M35/M45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitNBS004RT
ENGINE COOLANT CAPACITY (APPROXIMATE)
Un")
CO-58
[VK45DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2007 April2007 M35/M45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitNBS004RT
ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (US qt, Imp qt)
RADIATOR
Unit: kPa (kg/cm2 , psi)
THERMOSTAT
WATER CONTROL VALVE
Engine coolant capacity (With reservoir tank at “MAX” level) 10.4 (11, 9-1/8)
Reservoir tank engine coolant capacity (at “MAX” level) 0.8 (7/8, 3/4)
Radiator cap relief pressureStandard 78 - 98 (0.8 - 1.0, 11 - 14)
Limit 59 (0.6, 9)
Leakage testing pressure 157 (1.6, 23)
ThermostatStandard
Valve opening temperature 80 - 84°C (176 - 183°F)
Maximum valve lift More than 10 mm/95°C (0.39 in/203°F)
Valve closing temperature 77°C (171°F)
Water control valveStandard
Valve opening temperature 93.5 - 96.5°C (200 - 206°F)
Maximum valve lift More than 8 mm/108°C (0.315 in/226°F)
Valve closing temperature 90°C (194°F)
Page 1420 of 4647
DI-1
DRIVER INFORMATION SYSTEM
K ELECTRICAL
CONTENTS
C
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SECTION DI
A
B
DI
Revision: 2007 April2007 M35/M45
DRIVER INFORMATION SYSTEM
PRECAUTION ............................................................ 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
PREPARATION ........................................................... 4
Commercial Service Tools ........................................ 4
COMBINATION METERS ........................................... 5
System Description .................................................. 5
UNIFIED METER CONTROL UNIT ...................... 5
UNIFIED METER AND A/C AMP. ......................... 5
POWER SUPPLY AND GROUND CIRCUIT ........ 5
SPEEDOMETER ................................................... 6
TACHOMETER ..................................................... 6
WATER TEMPERATURE GAUGE ........................ 6
FUEL GAUGE ....................................................... 7
ODO/TRIP METER ............................................... 7
METER ILLUMINATION CONTROL ..................... 8
FAIL-SAFE ............................................................ 9
Arrangement of Combination Meter ....................... 10
Component Parts Location ...................................... 11
Internal Circuit ........................................................ 12
Wiring Diagram — METER — ................................ 13
Terminals and Reference Value for Combination
Meter ...................................................................... 15
Terminals and Reference Value for Unified Meter
and A/C Amp. ......................................................... 16
Self-Diagnosis Mode of Combination Meter ........... 17
SELF-DIAGNOSIS FUNCTION .......................... 17
OPERATION PROCEDURE ............................... 17
CONSULT-II Function (METER A/C AMP) ............. 18
Trouble Diagnosis .................................................. 18
HOW TO PERFORM TROUBLE DIAGNOSIS ... 18
PRELIMINARY CHECK ...................................... 18
Symptom Chart ...................................................... 18
Power Supply and Ground Circuit Inspection ........ 19
Vehicle Speed Signal Inspection ............................ 20
Engine Speed Signal Inspection ............................ 21
Engine Coolant Temperature Signal Inspection ..... 22
Fuel Level Sensor Signal Inspection ...................... 22
Fuel Gauge Pointer Fluctuates, Indicator Wrong Value or Varies ....................................................... 25
Fuel Gauge Does Not Move to FULL Position ....... 25
Electrical Components Inspection .......................... 26
CHECK FUEL LEVEL SENSOR UNIT ................ 26
Removal and Installation of Combination Meter ..... 27
REMOVAL ........................................................... 27
INSTALLATION ................................................... 27
Disassembly and Assembly of Combination Meter ... 27
DISASSEMBLY ................................................... 27
ASSEMBLY ......................................................... 27
UNIFIED METER AND A/C AMP .............................. 28
System Description ................................................. 28
COMBINATION METER CONTROL FUNCTION ... 28
A/C AUTO AMP. FUNCTION ............................... 29
OTHER FUNCTIONS .......................................... 29
Schematic ............................................................... 30
CONSULT-II Function (METER A/C AMP) ............. 31
CONSULT-II BASIC OPERATION ....................... 31
SELF-DIAG RESULTS ........................................ 31
DATA MONITOR ................................................. 32
Power Supply and Ground Circuit Inspection ......... 34
DTC [U1000] CAN Communication Circuit ............. 35
DTC [B2202] Meter Communication Circuit ........... 35
DTC [B2205] Vehicle Speed Circuit ........................ 38
Removal and Installation of Unified Meter and A/C
Amp. ....................................................................... 38
REMOVAL ........................................................... 38
INSTALLATION ................................................... 38
WARNING LAMPS .................................................... 39
System Description ................................................. 39
OIL PRESSURE WARNING LAMP ..................... 39
Component Parts and Harness Connector Location ... 40
Schematic ............................................................... 41
Wiring Diagram — WARN — .................................. 42
Oil Pressure Warning Lamp Stays Off (Ignition
Switch ON) ............................................................. 52
Oil Pressure Warning Lamp Does Not Turn Off (Oil
Pressure Is Normal) ................................................ 53
Electrical Component Inspection ............................ 54
OIL PRESSURE SWITCH ................................... 54
Page 1425 of 4647
DI-6
COMBINATION METERS
Revision: 2007 April2007 M35/M45
SPEEDOMETER
The speedometer indicates the vehicle speed.
ABS actuator and electric unit (control unit) converses a pulse signal from wheel sensor to vehicle speed
signal, and transmit vehicle speed signal to unified meter and A/C amp. with CAN communication.
Unified meter and A/C amp. transmits vehicle speed signal to combination meter with communication line.
Combination meter converses vehicle speed signal to the angle signal, and commands to speedometer.
TACHOMETER
The tachometer indicates engine speed in revolutions per minute (rpm).
ECM converses a signal from crankshaft position sensor to engine speed signal, and transmits to unified
meter and A/C amp. with CAN communication.
Unified meter and A/C amp. transmits engine speed signal to combination meter with communication line.
Combination meter converses engine speed signal to the angle signal, and commands to tachometer.
WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature.
ECM converses a signal from engine coolant temperature sensor to engine coolant temperature signal,
and transmits to unified meter and A/C amp. with CAN communication.
Unified meter and A/C amp. transmits engine coolant temperature signal to combination meter with com-
munication line.
Combination meter converses engine coolant temperature signal to the angle signal, and commands to
water temperature gauge.
PKIC0696E
PKIB7631E
PKIB7632E
Page 1437 of 4647
DI-18
COMBINATION METERS
Revision: 2007 April2007 M35/M45
CONSULT-II Function (METER A/C AMP)NKS003U3
Refer to DI-31, "CONSULT-II Function (METER A/C AMP)" in “UNIFIED METER AND A/C AMP”.
Trouble DiagnosisNKS003U4
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Perform preliminary check. Refer to DI-18, "
PRELIMINARY CHECK" .
3. According to the symptom chart, make sure the cause of the symptom and repair or replace applicable
parts. Refer to DI-18, "
Symptom Chart" .
4. Does the meter operate normally? If yes, GO TO 5. If no, GO TO 2.
5. INSPECTION END
PRELIMINARY CHECK
1. CHECK OPERATION SELF-DIAGNOSIS MODE OF COMBINATION METER
Perform self-diagnosis mode of combination meter. Refer to DI-17, "
OPERATION PROCEDURE" .
Does self
-diagnosis mode operate?
YES >> GO TO 2.
NO >> GO TO 3.
2. CHECK UNIFIED METER AND A/C AMP. (CONSULT-II)
Perform self-diagnosis of unified meter and A/C amp. Refer to DI-31, "
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.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT OF COMBINATION METER
Check power supply and ground circuit of combination meter. Refer to DI-19, "
Power Supply and Ground Cir-
cuit Inspection" .
OK or NG
OK >> Replace combination meter.
NG >> Repair power supply and ground circuit of combination meter.
Symptom ChartNKS003U5
Symptom Diagnosis/Service procedure
Odo/trip meter indication is malfunction. Refer to DI-20, "
Vehicle Speed Signal Inspection" .
Tachometer indication is malfunction. Refer to DI-21, "
Engine Speed Signal Inspection" .
Water temperature gauge indication is malfunction. Refer to DI-22, "
Engine Coolant Temperature Signal Inspection" .
Fuel gauge indication is malfunction.
Refer to DI-22, "
Fuel Level Sensor Signal Inspection" .
Low-fuel warning lamp indication is irregular.
A/T position indicator is malfunction. Refer to DI-58, "
A/T Indicator Is Malfunction" .
Page 1438 of 4647
COMBINATION METERS
DI-19
C
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B
DI
Revision: 2007 April2007 M35/M45
Power Supply and Ground Circuit InspectionNKS003U6
Symptom : When any power supply circuit is malfunction, the following function is not operative.
BAT : Meter face illumination, Dot matrix LCD, Ring illumination, Turn signal/hazard indicator lights
ACC : Meter face illumination, Dot matrix LCD, Pointer illumination, Speedometer, Tachometer
IGN : Meter face illumination, Dot matrix LCD, Pointer illumination, Speedometer, Tachometer, Engine
coolant temperature, Fuel gauge
1. CHECK FUSE
Check for blown fuses.
OK or NG
OK >> GO TO 2.
NG >> Be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-3, "
POWER
SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between combination meter harness connector and
ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between combination meter and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Check continuity between combination meter harness connector
and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Power source Fuse No.
Battery 21
Ignition switch ACC or ON 6
Ignition switch ON or START 14
Terminals Ignition switch position
(+)
(–) OFF ACC ON
Combination meter
connectorTerminal
M5223
GroundBattery
voltageBattery
voltageBattery
voltage
20 VBattery
voltageBattery
voltage
12 0 V 0 VBattery
voltage
PKIB7637E
Combination meter
connectorTerminal
GroundContinuity
M529
Ye s 10
11
PKIB7638E
Page 1441 of 4647
DI-22
COMBINATION METERS
Revision: 2007 April2007 M35/M45
Engine Coolant Temperature Signal InspectionNKS003U9
Symptom: Water temperature gauge indication is malfunction.
1. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Start engine and select “METER A/C AMP” on CONSULT-II.
2. Using “W TEMP METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” to the indication of water tempera-
ture gauge of combination meter.
Is the indication of water temperature gauge same as the value in
the monitor?
OK >> GO TO 2.
NG >> Replace combination meter. [Perform self-diagnosis of ECM when the value in the monitor indi-
cates 215°C (419°F). Then repair or replace the malfunction part.]
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “ENGINE” on CONSULT-II.
2. Using “COOLAN TEMP/S” on “DATA MONITOR”, print out the
CONSULT-II screen.
3. Select “METER A/C AMP” on CONSULT-II.
4. Using “W TEMP METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” to that of the “COOLAN TEMP/S”.
OK or NG
OK >> Perform self-diagnosis of ECM. Refer to EC-123, "CON-
SULT-II Function (ENGINE)" (for VQ35DE) or EC-826,
"CONSULT-II Function (ENGINE)" (for VK45DE).
NG >> Replace unified meter and A/C amp.
Fuel Level Sensor Signal InspectionNKS003UA
Symptom:
Fuel gauge indication is malfunction.
Low-fuel warning lamp indication is irregular.
NOTE:
The following symptoms are not malfunction.
Fuel level sensor unit
Depending on vehicle position or driving circumstance, the fuel level in the tank varies, and the pointer
may fluctuate.
If the vehicle is fueled with the ignition switch ON, the pointer will move slowly.
Low-fuel warning lamp
Depending on vehicle position or driving circumstance, the fuel in the tank flows and the warning lamp ON
timing may change.
Water temperature gauge pointer Reference value of data monitor °C (°F)
Hot Approx. 130 (266)
Middle Approx. 70 - 105 (158 - 221)
Cold Approx. 50 (122)
PKIA2091E
SKIA4368E
Page 1447 of 4647
DI-28
UNIFIED METER AND A/C AMP
Revision: 2007 April2007 M35/M45
UNIFIED METER AND A/C AMPPFP:27760
System DescriptionNKS003UG
For the unified meter and A/C amp., the signal required for controlling the combination meter are integrated in
the A/C auto amp.
COMBINATION METER CONTROL FUNCTION
Unified meter and A/C amp. inputs necessary information for combination meter from each unit with CAN
communication and so on.
Unified meter and A/C amp. outputs signals with communication line (TX, RX) between unified meter and
A/C amp. and combination meter.
Unified meter and A/C amp. corresponds a CONSULT-II function (self-diagnostic results, CAN diagnostic
support monitor and data monitor).
Input/output Signals
Between unified meter and A/C amp. and combination meter.
Unit Input from combination meter Output to combination meter
Unified meter and A/C amp.
Refuel status signal
Low-fuel warning lamp condition signal
Delivery destination data signal
Combination meter receive error signal
Combination meter specifications signal
Odo date signal
Vehicle speed signal
Turn indicator signal
High beam request signal
Ring illumination request signal
Position light request signal
Front fog lamp request signal
SET indicator lamp signal
CRUISE indicator lamp signal
Engine speed signal
Fuel level sensor signal (resistance value)
Engine coolant temperature signal
CAN communication condition signal of A/T
A/T position indicator signal
Manual mode indicator signal
A/T CHECK warning lamp signal
AWD warning lamp signal
Low tire pressure warning lamp signal
VDC OFF indicator lamp signal
SLIP indicator lamp signal
ABS warning lamp signal
Brake warning lamp signal
Malfunction indicator lamp signal
Oil pressure switch signal
Door switch signal
Buzzer request signal
ICC warning lamp signal
Meter display signal
AFS OFF indicator signal
Page 1451 of 4647
DI-32
UNIFIED METER AND A/C AMP
Revision: 2007 April2007 M35/M45
DATA MONITOR
Operation Procedure
1. Touch “METER A/C AMP” on “SELECT SYSTEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch either “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR” screen.
4. When “SELECTION FROM MENU” is selected, touch individual items to be monitored. When “MAIN SIG-
NALS” is selected, main items will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring, then the status of the moni-
tored item can be recorded. To stop recording, touch “STOP”.
Display Item List
X: Applicable MAIN SIGNALS Monitors main signals.
SELECTION FROM MENU Selects and monitors individual signal.
SKIA4957E
Display item [Unit]MAIN
SIGNALSSELECTION
FROM MENUDescription
SPEED METER [km/h] or [mph] X XDisplays the value of vehicle speed signal, which is input from ABS
actuator and electric unit (control unit).
SPEED OUTPUT [km/h] or [mph] X XDisplays the value of vehicle speed signal, which is transmitted to
each unit with CAN communication.
TACHO METER [rpm] X X Displays the value of engine speed signal, which is input from ECM.
W TEMP METER [°C] or [°F] X XDisplays the value of engine coolant temperature signal, which is
input from ECM.
FUEL METER [lit.] X XDisplays the value, which processes a resistance signal from fuel
gauge.
DISTANCE [km] or [mile] X XDisplays the value, which is calculated by vehicle speed signal from
ABS actuator and electric unit (control unit), fuel gauge and fuel
consumption from ECM.
FUEL W/L [ON/OFF] X X Displays [ON/OFF] condition of low-fuel warning lamp.
MIL [ON/OFF] X Displays [ON/OFF] condition of malfunction indicator lamp.
AIR PRES W/L [ON/OFF] X Displays [ON/OFF] condition of low tire pressure warning lamp.
SEAT BELT W/L [ON/OFF] X Displays [ON/OFF] condition of seat belt warning lamp.
BUZZER [ON/OFF] X X Displays [ON/OFF] condition of buzzer.
DOOR W/L [ON/OFF] X Displays [ON/OFF] condition of door warning lamp.
HI-BEAM IND [ON/OFF] X Displays [ON/OFF] condition of high beam indicator.
TURN IND [ON/OFF] X Displays [ON/OFF] condition of turn indicator.
FR FOG IND [ON/OFF] X Displays [ON/OFF] condition of front fog indicator.
OIL W/L [ON/OFF] X Displays [ON/OFF] condition of oil pressure warning lamp.
VDC/TCS IND [ON/OFF] X Displays [ON/OFF] condition of VDC/TCS OFF indicator lamp.
ABS W/L [ON/OFF] X Displays [ON/OFF] condition of ABS warning lamp.
SLIP IND [ON/OFF] X Displays [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L [ON/OFF] X Displays [ON/OFF] condition of brake warning lamp. *
Page 1537 of 4647
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