camshaft position sensor INFINITI M35 2006 Factory Service Manual

EC-8Revision: 2006 January2006 M35/M45 Wiring Diagram .....................................................708
Diagnostic Procedure ...........................................709
Component Inspection ..........................................713
ASCD INDICATOR .................................................
.714
Component Description ........................................714
CONSULT-II Reference Value in Data Monitor Mode
.714
Wiring Diagram .....................................................715
Diagnostic Procedure ...........................................716
SNOW MODE SWITCH ...........................................717
Description ............................................................717
CONSULT-II Reference Value in the Data Monitor
Mode .....................................................................717
Wiring Diagram .....................................................718
Diagnostic Procedure ...........................................719
Component Inspection ..........................................721
MIL AND DATA LINK CONNECTOR ......................722
Wiring Diagram .....................................................722
SERVICE DATA AND SPECIFICATIONS (SDS) ....724
Fuel Pressure .......................................................724
Idle Speed and Ignition Timing .............................724
Calculated Load Value ..........................................724
Mass Air Flow Sensor ...........................................724
Intake Air Temperature Sensor .............................724
Engine Coolant Temperature Sensor ...................724
Fuel Tank Temperature Sensor ............................724
Crankshaft Position Sensor (POS) .......................724
Camshaft Position Sensor (PHASE) ....................724
A/F Sensor 1 Heater ............................................ .724
Heated Oxygen Sensor 2 Heater .........................725
Throttle Control Motor ...........................................725
Fuel Injector ..........................................................725
Fuel Pump ............................................................725
VK45DE
INDEX FOR DTC .....................................................726
DTC No. Index ......................................................726
Alphabetical Index ................................................730
PRECAUTIONS .......................................................734
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................734
Precautions for Procedures without Cowl Top Cover .734
On Board Diagnostic (OBD) System of Engine and
A/T ........................................................................734
Precaution ............................................................735
PREPARATION .......................................................738
Special Service Tools ...........................................738
Commercial Service Tools ....................................739
ENGINE CONTROL SYSTEM ................................740
System Diagram ...................................................740
Multiport Fuel Injection (MFI) System ...................741
Electronic Ignition (EI) System .............................743
Fuel Cut Control (At No Load and High Engine
Speed) ..................................................................744
AIR CONDITIONING CUT CONTROL ....................745
Input/Output Signal Chart .....................................745
System Description ...............................................745AUTOMATIC SPEED CONTROL DEVICE (ASCD) .746
System Description ...............................................746
Component Description ........................................747
CAN COMMUNICATION .........................................748
System Description ...............................................748
EVAPORATIVE EMISSION SYSTEM .....................749
Description ............................................................749
Component Inspection ..........................................752
Removal and Installation .......................................753
How to Detect Fuel Vapor Leakage ......................753
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ....................................................................756
System Description ...............................................756
Diagnostic Procedure ............................................757
Component Inspection ..........................................759
POSITIVE CRANKCASE VENTILATION ................761
Description ............................................................761
Component Inspection ..........................................761
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ......................................................................763
Description ............................................................763
ON BOARD DIAGNOSTIC (OBD) SYSTEM ...........764
Introduction ..........................................................
.764
Two Trip Detection Logic .......................................764
Emission-Related Diagnostic Information .............765
Malfunction Indicator Lamp (MIL) .........................780
OBD System Operation Chart ...............................782
BASIC SERVICE PROCEDURE .............................788
Basic Inspection ....................................................788
Idle Speed and Ignition Timing Check ..................793
Idle Mixture Ratio Adjustment ...............................795
VIN Registration ....................................................806
Accelerator Pedal Released Position Learning .....806
Throttle Valve Closed Position Learning ...............806
Idle Air Volume Learning .......................................807
Fuel Pressure Check ............................................809
TROUBLE DIAGNOSIS ..........................................811
Trouble Diagnosis Introduction .............................811
DTC Inspection Priority Chart ...............................817
Fail-Safe Chart ......................................................819
Symptom Matrix Chart ..........................................820
Engine Control Component Parts Location ...........824
Vacuum Hose Drawing .........................................833
Circuit Diagram .....................................................834
ECM Harness Connector Terminal Layout ............836
ECM Terminals and Reference Value ...................836
CONSULT-II Function (ENGINE) ..........................846
Generic Scan Tool (GST) Function .......................859
CONSULT-II Reference Value in Data Monitor .....862
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................866
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .868
Description ............................................................868
Testing Condition ..................................................868
Inspection Procedure ...........................................
.868
Diagnostic Procedure ............................................869
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-

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Revision: 2006 January2006 M35/M45 Component Inspection ........................................1083
Removal and Installation .....................................1083
DTC P0300 - P0308 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 8 CYLINDER MISFIRE ....................1084
On Board Diagnosis Logic ..................................1084
DTC Confirmation Procedure ..............................1084
Diagnostic Procedure ..........................................1085
DTC P0327, P0328, P0332, P0333 KS .................1094
Component Description .......................................1094
On Board Diagnosis Logic ..................................1094
DTC Confirmation Procedure ..............................1094
Wiring Diagram ...................................................1095
Diagnostic Procedure ..........................................1096
Component Inspection ........................................1098
Removal and Installation .....................................1098
DTC P0335 CKP SENSOR (POS) .........................1099
Component Description .......................................1099
CONSULT-II Reference Value in Data Monitor Mode
1099
On Board Diagnosis Logic ..................................1099
DTC Confirmation Procedure ..............................1100
Wiring Diagram ...................................................1101
Diagnostic Procedure ..........................................1102
Component Inspection ........................................1105
Removal and Installation .....................................1105
DTC P0340 CAMSHAFT POSITION (CMP) SEN-
SOR (PHASE) ........................................................1106
Component Description .......................................1106
On Board Diagnosis Logic ..................................1106
DTC Confirmation Procedure ..............................1107
Wiring Diagram ...................................................1108
Diagnostic Procedure ..........................................1109
Component Inspection ........................................1112
Removal and Installation .....................................111 2
DTC P0420, P0430 THREE WAY CATALYST FUNC-
TION .......................................................................1113
On Board Diagnosis Logic ..................................1113
DTC Confirmation Procedure ..............................1113
Overall Function Check .......................................111 4
Diagnostic Procedure ..........................................111 5
DTC P0441 EVAP CONTROL SYSTEM ...............1119
System Description .............................................111 9
On Board Diagnosis Logic ..................................1119
DTC Confirmation Procedure ..............................1119
Overall Function Check .......................................1120
Diagnostic Procedure ..........................................1121
DTC P0442 EVAP CONTROL SYSTEM ...............1124
On Board Diagnosis Logic ..................................1124
DTC Confirmation Procedure ..............................1125
Diagnostic Procedure ..........................................1126
DTC P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE .............................1132
Description ..........................................................1132
CONSULT-II Reference Value in Data Monitor Mode
11 3 2
On Board Diagnosis Logic ..................................1133
DTC Confirmation Procedure ..............................1133
Wiring Diagram ...................................................1134
Diagnostic Procedure ..........................................1136Component Inspection .........................................11 3 9
Removal and Installation .....................................11 3 9
DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE .....................114 0
Description ...........................................................11 4 0
CONSULT-II Reference Value in Data Monitor Mode
11 4 0
On Board Diagnosis Logic ...................................11 4 1
DTC Confirmation Procedure ..............................
11 4 1
Wiring Diagram ....................................................11 4 2
Diagnostic Procedure ..........................................11 4 4
Component Inspection .........................................11 4 5
Removal and Installation .....................................11 4 6
DTC P0447 EVAP CANISTER VENT CONTROL
VALVE ....................................................................114 7
Component Description .......................................11 4 7
CONSULT-II Reference Value in Data Monitor Mode
11 4 7
On Board Diagnosis Logic ...................................11 4 7
DTC Confirmation Procedure ..............................11 4 8
Wiring Diagram ....................................................11 4 9
Diagnostic Procedure ..........................................11 5 0
Component Inspection .........................................11 5 2
DTC P0448 EVAP CANISTER VENT CONTROL
VALVE ....................................................................115 4
Component Description .......................................11 5 4
CONSULT-II Reference Value in Data Monitor Mode
11 5 4
On Board Diagnosis Logic ...................................11 5 4
DTC Confirmation Procedure ..............................11 5 5
Wiring Diagram ....................................................11 5 6
Diagnostic Procedure ..........................................11 5 7
Component Inspection .........................................11 5 8
DTC P0451 EVAP CONTROL SYSTEM PRESSURE
SENSOR ................................................................116 0
Component Description .......................................11 6 0
CONSULT-II Reference Value in Data Monitor Mode
11 6 0
On Board Diagnosis Logic ...................................11 6 0
DTC Confirmation Procedure ..............................11 6 1
Diagnostic Procedure ..........................................11 6 1
Component Inspection .........................................11 6 2
DTC P0452 EVAP CONTROL SYSTEM PRESSURE
SENSOR ................................................................116 3
Component Description .......................................11 6 3
CONSULT-II Reference Value in Data Monitor Mode
11 6 3
On Board Diagnosis Logic ...................................11 6 3
DTC Confirmation Procedure ..............................11 6 4
Wiring Diagram ....................................................11 6 5
Diagnostic Procedure ..........................................11 6 6
Component Inspection .........................................11 6 8
DTC P0453 EVAP CONTROL SYSTEM PRESSURE
SENSOR ................................................................117 0
Component Description .......................................11 7 0
CONSULT-II Reference Value in Data Monitor Mode
11 7 0
On Board Diagnosis Logic ...................................11 7 0
DTC Confirmation Procedure ..............................11 7 1

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Revision: 2006 January2006 M35/M45 FUEL PUMP ..........................................................1427
Description ..........................................................1427
CONSULT-II Reference Value in Data Monitor Mode
1427
Wiring Diagram ...................................................1428
Diagnostic Procedure ..........................................1429
Component Inspection ........................................1433
Removal and Installation .....................................1433
REFRIGERANT PRESSURE SENSOR ................1434
Component Description .......................................1434
Wiring Diagram ...................................................1435
Diagnostic Procedure ..........................................1436
Removal and Installation .....................................1438
ELECTRICAL LOAD SIGNAL ...............................1439
Description ..........................................................1439
CONSULT-II Reference Value in Data Monitor Mode
1439
Diagnostic Procedure ..........................................1439
ICC BRAKE SWITCH ............................................1441
Component Description .......................................1441
CONSULT-II Reference Value in Data Monitor Mode
1441
Wiring Diagram ...................................................1442
Diagnostic Procedure ..........................................1443
Component Inspection ........................................1447
ASCD BRAKE SWITCH ........................................1449
Component Description .......................................1449
CONSULT-II Reference Value in Data Monitor Mode 1449
Wiring Diagram ....................................................1450
Diagnostic Procedure ..........................................1451
Component Inspection .........................................1455
ASCD INDICATOR ................................................. 1456
Component Description .......................................1456
CONSULT-II Reference Value in Data Monitor Mode
1456
Wiring Diagram ....................................................1457
Diagnostic Procedure ..........................................1458
MIL AND DATA LINK CONNECTOR .....................1459
Wiring Diagram ....................................................1459
SERVICE DATA AND SPECIFICATIONS (SDS) ...1461
Fuel Pressure ......................................................1461
Idle Speed and Ignition Timing ............................1461
Calculated Load Value .........................................1461
Mass Air Flow Sensor ..........................................1461
Intake Air Temperature Sensor ............................1461
Engine Coolant Temperature Sensor ..................1461
Fuel Tank Temperature Sensor ...........................1461
Crankshaft Position Sensor (POS) ......................1461
Camshaft Position Sensor (PHASE) ...................1461
A/F Sensor 1 Heater ............................................ 1461
Heated Oxygen Sensor 2 Heater ........................1462
Throttle Control Motor ..........................................1462
Fuel Injector .........................................................1462
Fuel Pump ...........................................................1462

EC-26
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PRECAUTIONS
Revision: 2006 January2006 M35/M45
Before replacing ECM, perform ECM Terminals and Refer-
ence Value inspection and make sure ECM functions prop-
erly. Refer to EC-124, "
ECM Harness Connector Terminal
Layout" .
Handle mass air flow sensor carefully to avoid damage.
Do not clean mass air flow sensor with any type of deter-
gent.
Do not disassemble electric throttle control actuator.
Even a slight leak in the air intake system can cause seri-
ous incidents.
Do not shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
After performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check.
The DTC should not be displayed in the DTC Confirmation
Procedure if the repair is completed. The Overall Function
Check should be a good result if the repair is completed.
When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.
MEF040D
SEF217U
SEF348N

ENGINE CONTROL SYSTEM
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Multiport Fuel Injection (MFI) SystemNBS004S3
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under normal conditions.
*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from the crankshaft position sensor (POS), camshaft position
sensor (PHASE) and the mass air flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.

During warm-up
When starting the engine
During acceleration
Hot-engine operation
When selector lever is changed from N to D
High-load, high-speed operation

During deceleration
During high engine speed operation
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed*
3
Piston position
Fuel injection
& mixture ratio
controlFuel injector Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Battery
Battery voltage*
3
Knock sensor Engine knocking condition
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2*
1Density of oxygen in exhaust gas
ABS actuator and electric unit (control unit)*
2VDC/TCS operation command
Air conditioner switch*
2Air conditioner operation
Wheel sensor*
2Vehicle speed

ENGINE CONTROL SYSTEM
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FUEL INJECTION TIMING
Two types of systems are used.
Sequential Multiport Fuel Injection System
Fuel is injected into each cylinder during each engine cycle according to the firing order. This system is used
when the engine is running.
Simultaneous Multiport Fuel Injection System
Fuel is injected simultaneously into all six cylinders twice each engine cycle. In other words, pulse signals of
the same width are simultaneously transmitted from the ECM.
The six injectors will then receive the signals two times for each engine cycle.
This system is used when the engine is being started and/or if the fail-safe system (CPU) is operating.
FUEL SHUT-OFF
Fuel to each cylinder is cut off during deceleration, operation of the engine at excessively high speeds or oper-
ation of the vehicle at excessively high speeds.
Electronic Ignition (EI) SystemNBS004S4
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
Firing order: 1 - 2 - 3 - 4 - 5 - 6
The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the
engine. The ignition timing data is stored in the ECM.
The ECM receives information such as the injection pulse width and camshaft position sensor (PHASE) sig-
nal. Computing this information, ignition signals are transmitted to the power transistor.
During the following conditions, the ignition timing is revised by the ECM according to the other data stored in
the ECM.
At starting
During warm-up
At idle
At low battery voltage
SEF179U
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed*
2
Piston position
Ignition timing
controlPower transistor Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Battery
Battery voltage*
2
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Wheel sensor*
1Vehicle speed

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ENGINE CONTROL SYSTEM
Revision: 2006 January2006 M35/M45
During acceleration
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Fuel Cut Control (At No Load and High Engine Speed)NBS004S5
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
If the engine speed is above 1,400 rpm under no load (for example, the selector lever position is neutral and
engine speed is over 1,400 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off var-
ies based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,000 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-31,
"Multiport Fuel Injection (MFI) System" .
Sensor Input Signal to ECM ECM function Actuator
Park/neutral position (PNP) switch Neutral position
Fuel cut con-
trolFuel injector Accelerator pedal position sensor Accelerator pedal position
Engine coolant temperature sensor Engine coolant temperature
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed
Wheel sensor* Vehicle speed

AIR CONDITIONING CUT CONTROL
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AIR CONDITIONING CUT CONTROLPFP:23710
Input/Output Signal ChartNBS004S6
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
System DescriptionNBS004S7
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
When the accelerator pedal is fully depressed.
When cranking the engine.
At high engine speeds.
When the engine coolant temperature becomes excessively high.
When operating power steering during low engine speed or low vehicle speed.
When engine speed is excessively low.
When refrigerant pressure is excessively low or high.
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch*
1Air conditioner ON signal
Air conditioner
cut controlAir conditioner relay Accelerator pedal position sensor Accelerator pedal position
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
2
Engine coolant temperature sensor Engine coolant temperature
Battery
Battery voltage*
2
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
Wheel sensor*
1Vehicle speed

BASIC SERVICE PROCEDURE
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6. PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-96, "
Idle Air Volume Learning" .
Is Idle Air Volume Learning carried out successfully?
Ye s o r N o
Ye s > > G O T O 7 .
No >> 1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
7. CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Refer to EC-82, "
IDLE SPEED" .
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
Refer to EC-82, "
IDLE SPEED" .
OK or NG
OK >> GO TO 10.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the Following.
Check camshaft position sensor (PHASE) and circuit. Refer to EC-383, "DTC P0340, P0345 CMP SEN-
SOR (PHASE)" .
Check crankshaft position sensor (POS) and circuit. Refer to EC-376, "DTC P0335 CKP SENSOR (POS)"
.
OK or NG
OK >> GO TO 9.
NG >> 1. Repair or replace.
2. GO TO 4.
9. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to
BL-252, "
ECM Re-Communicating Function" .
>> GO TO 4. 650
50 rpm (in P or N position)
650
50 rpm (in P or N position)
SEF174Y

BASIC SERVICE PROCEDURE
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15. CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
Refer to EC-82, "
IGNITION TIMING" .
OK or NG
OK >> GO TO 19.
NG >> GO TO 16.
16. CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-64, "
TIMING CHAIN" .
OK or NG
OK >> GO TO 17.
NG >> 1. Repair the timing chain installation.
2. GO TO 4.
17. DETECT MALFUNCTIONING PART
Check the following.
Check camshaft position sensor (PHASE) and circuit. Refer to EC-383, "DTC P0340, P0345 CMP SEN-
SOR (PHASE)" .
Check crankshaft position sensor (POS) and circuit. Refer to EC-376, "DTC P0335 CKP SENSOR (POS)"
.
OK or NG
OK >> GO TO 18.
NG >> 1. Repair or replace.
2. GO TO 4.
18. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to
BL-252, "
ECM Re-Communicating Function" .
>> GO TO 4.
19. INSPECTION END
Did you replace ECM, referring this Basic Inspection procedure?
Ye s o r N o
Ye s > > 1 . P e r f o r m EC-95, "VIN Registration" .
2.INSPECTION END
No >>INSPECTION END 15
5 BTDC (in P or N position)
PBIB1602E