Infiniti FX35, FX50 (S51). Manual - part 760

 

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Infiniti FX35, FX50 (S51). Manual - part 760

 

 

INSPECTION AND ADJUSTMENT

EC-581

< BASIC INSPECTION >

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Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).

VIN REGISTRATION : Special Repair Requirement

INFOID:0000000005237157

1.

CHECK VIN

Check the VIN of the vehicle and note it. Refer to 

GI-17, "Information About Identification or Model Code"

.

>> GO TO 2.

2.

PERFORM VIN REGISTRATION

 With CONSULT-III

1.

Turn ignition switch ON with engine stopped.

2.

Select “VIN REGISTRATION” in “WORK SUPPORT” mode.

3.

Follow the instructions on the CONSULT-III display.

>> END

ACCELERATOR PEDAL RELEASED POSITION LEARNING

ACCELERATOR PEDAL RELEASED POSITION LEARNING : Description

INFOID:0000000005237158

Accelerator Pedal Released Position Learning is a function of ECM to learn the fully released position of the
accelerator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each
time the harness connector of the accelerator pedal position sensor or ECM is disconnected.

ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Re-
quirement

INFOID:0000000005237159

1.

START

1.

Check 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.

>> END

THROTTLE VALVE CLOSED POSITION LEARNING

THROTTLE VALVE CLOSED POSITION LEARNING : Description

INFOID:0000000005237160

Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle
valve by monitoring the throttle position sensor output signal. It must be performed each time the harness con-
nector of the electric throttle control actuator or ECM is disconnected.

THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement

INFOID:0000000005237161

1.

START

1.

Check that accelerator pedal is fully released.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.

>> END

IDLE AIR VOLUME LEARNING

EC-582

< BASIC INSPECTION >

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INSPECTION AND ADJUSTMENT

IDLE AIR VOLUME LEARNING : Description

INFOID:0000000005237162

Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps engine idle speed within
the specific range. It must be performed under the following conditions:
• Each time the electric throttle control actuator or ECM is replaced.
• Idle speed or ignition timing is out of the specification.

IDLE AIR VOLUME LEARNING : Special Repair Requirement

INFOID:0000000005237163

1.

PRECONDITIONING

Check that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
• Battery voltage: More than 12.9 V (At idle)
• Engine coolant temperature: 70 - 105

°

C (158 - 221

°

F)

• Selector lever position: P or N
• Electric load switch: OFF

(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is
started the headlamp will not illuminate.

• Steering wheel: Neutral (Straight-ahead position)
• Vehicle speed: Stopped
• Transmission: Warmed-up
- With CONSULT-III: Drive vehicle until “ATF TEMP 2” in “DATA MONITOR” mode of “A/T” system indicates

less than 0.9 V.

- Without CONSULT-III: Drive vehicle for 10 minutes.

Will CONSULT-III be used?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

PERFORM IDLE AIR VOLUME LEARNING

 With CONSULT-III

1.

Perform Accelerator Pedal Released Position Learning. Refer to 

EC-581, "ACCELERATOR PEDAL

RELEASED POSITION LEARNING : Special Repair Requirement"

.

2.

Perform Throttle Valve Closed Position Learning. 

EC-581, "THROTTLE VALVE CLOSED POSITION

LEARNING : Special Repair Requirement"

.

3.

Start engine and warm it up to normal operating temperature.

4.

Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.

5.

Touch “START” and wait 20 seconds.

Is “CMPLT” displayed on CONSULT-III screen?

YES

>> GO TO 4.

NO

>> GO TO 5.

3.

PERFORM IDLE AIR VOLUME LEARNING

 Without CONSULT-III

NOTE:
• It is better to count the time accurately with a clock.
• It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has

a malfunction.

1.

Perform Accelerator Pedal Released Position Learning. Refer to 

EC-581, "ACCELERATOR PEDAL

RELEASED POSITION LEARNING : Special Repair Requirement"

.

2.

Perform Throttle Valve Closed Position Learning. 

EC-581, "THROTTLE VALVE CLOSED POSITION

LEARNING : Special Repair Requirement"

.

3.

Start engine and warm it up to normal operating temperature.

4.

Turn ignition switch OFF and wait at least 10 seconds.

5.

Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.

6.

Repeat the following procedure quickly 5 times within 5 seconds.

-

Fully depress the accelerator pedal.

-

Fully release the accelerator pedal.

INSPECTION AND ADJUSTMENT

EC-583

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7.

Wait 7 seconds, fully depress the accelerator pedal for approx. 20 seconds until the MIL stops blinking
and turns ON.

8.

Fully release the accelerator pedal within 3 seconds after the MIL turns ON.

9.

Start engine and let it idle.

10. Wait 20 seconds.

>> GO TO 4.

4.

CHECK IDLE SPEED AND IGNITION TIMING

Rev up engine two or three times and check that idle speed and ignition timing are within the specifications.
For procedure, refer to 

EC-1241, "Idle Speed"

 and 

EC-1241, "Ignition Timing"

.

For specifications, refer to 

EC-1241, "Idle Speed"

 and 

EC-1241, "Ignition Timing"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART-I

Check the following
• Check that throttle valve is fully closed.
• Check PCV valve operation.
• Check that downstream of throttle valve is free from air leakage.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace malfunctioning part.

6.

DETECT MALFUNCTIONING PART-II

Engine component parts and their installation condition are questionable. Check and eliminate the cause of
the incident.
It is useful to perform “TROUBLE DIAGNOSIS - SPECIFICATION VALUE”. Refer to 

EC-728, "Description"

.

If any of the following conditions occur after the engine has started, eliminate the cause of the incident and
perform Idle Air Volume Learning again:
• Engine stalls.
• Incorrect idle.

>> INSPECTION END

VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT

VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT : Description

INFOID:0000000005237164

VVEL control shaft position sensor adjustment is an operation to adjust the initial position of the VVEL control
shaft position sensor.
It must be performed each time VVEL actuator sub assembly is replaced.

CAUTION:

• It must be performed only on the replaced bank side.
• It must not be performed except when VVEL actuator sub assembly is replaced. If by any chance the

adjustment is performed, replace VVEL actuator sub assembly.

VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT : Special Repair Re-

SEC897C

EC-584

< BASIC INSPECTION >

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INSPECTION AND ADJUSTMENT

quirement

INFOID:0000000005237165

1.

START

Will CONSULT-III be used?

Will CONSULT-III be used?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT

 With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “VVEL POS SEN ADJ PREP” in “WORK SUPPORT” mode with CONSULT-III.

3.

Touch “Start” and wait a few seconds.

4.

Check that “CMPLT” is displayed on CONSULT-III screen.

5.

Select “VVEL POSITION SEN-B1” or “VVEL POSITION SEN-B2” in “DATA MONITOR” mode with CON-
SULT-III.

6.

Loosen the VVEL control shaft position sensor mounting bolts
(1).

7.

Turn the VVEL control shaft position sensor (2) clockwise and
counterclockwise while monitoring the output voltage of “VVEL
POSITION SEN-B1” or “VVEL POSITION SEN-B2” and adjust
the output voltage to be within the standard value.

8.

Tighten the VVEL control shaft position sensor mounting bolts.

9.

Reconfirm that the output voltage of “VVEL POSITION SEN-B1” or “VVEL POSITION SEN-B2” is within
the standard value.

NOTE:
If it varies from the standard value after the mounting bolts are tightened, perform steps 6 to 8 again.

10. Turn ignition switch OFF and wait at least 10 seconds.
11. Start engine and warm it up to normal operating temperature.
12. Turn ignition switch OFF and wait at least 10 seconds.
13. Perform idle air volume learning. Refer to 

EC-582, "IDLE AIR VOLUME LEARNING : Special Repair

Requirement"

.

>> INSPECTION END

3.

PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT

 Without CONSULT-III

1.

Disconnect VVEL control shaft position sensor harness connector.

2.

Remove VVEL actuator motor relay.

3.

Turn ignition switch ON, wait at least 5 seconds and then turn it OFF.

4.

Reconnect all harness connectors disconnected.

5.

Install VVEL actuator motor relay.

6.

Turn ignition switch ON and wait at least 5 seconds.

Voltage:

500 

±

 48 mV

:

7.0 N•m (0.71 kg-m, 62 in-lb)

Voltage:

500 

±

 48 mV

JMBIA1557ZZ

 

 

 

 

 

 

 

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