2006 INFINITI M35 Factory Service Manual

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Page 2345 of 5621

INFINITI M35 2006 Factory Service Manual EC-802
[VK45DE]
BASIC SERVICE PROCEDURE
Revision: 2006 January2006 M35/M45
19. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With CONSULT-II
1. Turn ignition switch OFF and wait at a least 10 seconds.

Page 2346 of 5621

INFINITI M35 2006 Factory Service Manual BASIC SERVICE PROCEDURE
EC-803
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Revision: 2006 January2006 M35/M45
21. CHECK AIR FUEL RATIO (A/F) SENSOR 1 HARNESS
1. Turn ignition switch OFF and disconnect battery

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INFINITI M35 2006 Factory Service Manual EC-804
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BASIC SERVICE PROCEDURE
Revision: 2006 January2006 M35/M45
25. CHECK CO%
With CONSULT-II
1. Start engine and warm it up until engine coolant temperature indicator points the middle of

Page 2348 of 5621

INFINITI M35 2006 Factory Service Manual BASIC SERVICE PROCEDURE
EC-805
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Revision: 2006 January2006 M35/M45
29. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With CONSULT-II
1. Turn ignition switch OFF and w

BASIC SERVICE PROCEDURE
EC-805
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Revision: 2006 January2006 M35/M45
29. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With CONSULT-II
1. Turn ignition switch OFF and wait at a least 10 seconds.
2. Start engine and warm it up to normal operating temperature.
3. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position.
NOTE:
Keep the accelerator pedal as steady as possible during the cruising.
4. Release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH).
NOTE:
Never apply brake during releasing the accelerator pedal.
5. Repeat steps 3 to 4 for 5 times.
6. Stop the vehicle and connect CONSULT-II to the vehicle.
7. Make sure that no (1st trip) DTC is displayed in “SELF-DIAG RESULTS” mode.
OK or NG
OK >> GO TO 4.
NG >> GO TO 31.
30. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With GST
1. Turn ignition switch OFF and wait at a least 10 seconds.
2. Start engine and warm it up to normal operating temperature.
3. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position.
NOTE:
Keep the accelerator pedal as steady as possible during the cruising.
4. Release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH).
NOTE:
Never apply brake during releasing the accelerator pedal.
5. Repeat steps 3 to 4 for 5 times.
6. Stop the vehicle and connect GST to the vehicle.
7. Make sure that no (1st trip) DTC is displayed.
OK or NG
OK >> GO TO 4.
NG >> GO TO 31.
31. DETECT MALFUNCTIONING PART
Check the following.
Check fuel pressure regulator, and repair or replace if necessary. Refer to EC-809, "Fuel Pressure Check"
.
Check mass air flow sensor and its circuit, and repair or replace if necessary. Refer to EC-927, "DTC
P0101 MAF SENSOR" and EC-936, "DTC P0102, P0103 MAF SENSOR" .
Check fuel injector and its circuit, and repair or replace if necessary. Refer to EC-1420, "FUEL INJEC-
TOR" .
Check engine coolant temperature sensor and its circuit, and repair or replace if necessary. Refer to EC-
948, "DTC P0117, P0118 ECT SENSOR" and EC-961, "DTC P0125 ECT SENSOR" .
OK or NG
OK >> GO TO 33.
NG >> 1. Repair or replace.
2. GO TO 32.

Page 2349 of 5621

INFINITI M35 2006 Factory Service Manual EC-806
[VK45DE]
BASIC SERVICE PROCEDURE
Revision: 2006 January2006 M35/M45
32. ERASE UNNECESSARY DTC
After this inspection, unnecessary DTC might be displayed.
Erase the stored memory in ECM and TCM.

EC-806
[VK45DE]
BASIC SERVICE PROCEDURE
Revision: 2006 January2006 M35/M45
32. ERASE UNNECESSARY DTC
After this inspection, unnecessary DTC might be displayed.
Erase the stored memory in ECM and TCM. Refer to EC-778, "
HOW TO ERASE EMISSION-RELATED DIAG-
NOSTIC INFORMATION" and AT- 4 0 , "OBD-II Diagnostic Trouble Code (DTC)" .
>> GO TO 4.
33. 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.
VIN RegistrationNBS005A9
DESCRIPTION
VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is replaced.
NOTE:
Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).
OPERATION PROCEDURE
With CONSULT-II
1. Check the VIN of the vehicle and note it. Refer to GI-49, "IDENTIFICATION INFORMATION" .
2. Turn ignition switch ON and engine stopped.
3. Select “VIN REGISTRATION” in “WORK SUPPORT” mode.
4. Follow the instruction of CONSULT-II display.
Accelerator Pedal Released Position LearningNBS005AA
DESCRIPTION
Accelerator Pedal Released Position Learning is an operation to learn the fully released position of the accel-
erator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON and wait at least 2 seconds.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF and wait at least 10 seconds.
Throttle Valve Closed Position LearningNBS005AB
DESCRIPTION
Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by
monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
PBIB2242E

Page 2350 of 5621

INFINITI M35 2006 Factory Service Manual BASIC SERVICE PROCEDURE
EC-807
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Revision: 2006 January2006 M35/M45
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch

Page 2351 of 5621

INFINITI M35 2006 Factory Service Manual EC-808
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BASIC SERVICE PROCEDURE
Revision: 2006 January2006 M35/M45
6. Touch “START” and wait 20 seconds.
7. Make sure that “CMPLT” is displayed on CONSULT-II screen. If
“CMPLT” is

Page 2352 of 5621

INFINITI M35 2006 Factory Service Manual BASIC SERVICE PROCEDURE
EC-809
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Revision: 2006 January2006 M35/M4513. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning wil

BASIC SERVICE PROCEDURE
EC-809
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Revision: 2006 January2006 M35/M4513. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning will not be carried
out successfully. In this case, find the cause of the incident by referring to the Diagnostic Procedure below.
DIAGNOSTIC PROCEDURE
If idle air volume learning cannot be performed successfully, proceed as follows:
1.Check that throttle valve is fully closed.
2.Check PCV valve operation.
3.Check that downstream of throttle valve is free from air leakage.
4.When the above three items check out OK, engine component parts and their installation condi-
tion are questionable. Check and eliminate the cause of the incident.
It is useful to perform EC-868, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
5.If any of the following conditions occur after the engine has started, eliminate the cause of the
incident and perform Idle Air Volume Learning all over again:
Engine stalls.
Erroneous idle.
Fuel Pressure CheckNBS005AD
FUEL PRESSURE RELEASE
With CONSULT-II
1. Turn ignition switch ON.
2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT”
mode with CONSULT-II.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel
pressure.
5. Turn ignition switch OFF.
Without CONSULT-II
1. Remove fuel pump fuse (1) located in IPDM E/R (2).
2. Start engine.
3. After engine stalls, crank it 2 or 3 times to release all fuel pres-
sure.
4. Turn ignition switch OFF.
5. Reinstall fuel pump fuse after servicing fuel system.
FUEL PRESSURE CHECK
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel
pressure cannot be completely released because Y50 models do not have fuel return system.
Use Fuel Pressure Gauge Kit (J-44321) to check fuel pressure.
1. Release fuel pressure to zero. Refer to EC-809, "
FUEL PRESSURE RELEASE" .
ITEM SPECIFICATION
Idle speed 650
50 rpm (in P or N position)
Ignition timing 12
5 BTDC (in P or N position)
SEF214Y
PBIB2697E

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