Nissan March K13. Manual - part 229

ACCELERATOR PEDAL RELEASED POSITION LEARNING

EC-377

< BASIC INSPECTION >

[HR12DE (TYPE 2)]

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ACCELERATOR PEDAL RELEASED POSITION LEARNING

Description

INFOID:0000000006036894

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 harness connector of accelerator pedal position sensor or ECM is disconnected.

Work Procedure

INFOID:0000000006036895

1.

START

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.

>> END

EC-378

< BASIC INSPECTION >

[HR12DE (TYPE 2)]

THROTTLE VALVE CLOSED POSITION LEARNING

THROTTLE VALVE CLOSED POSITION LEARNING

Description

INFOID:0000000006036896

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 harness connec-
tor of electric throttle control actuator or ECM is disconnected.

Work Procedure

INFOID:0000000006036897

1.

START

1.

Make sure that accelerator pedal is fully released.

2.

Turn ignition switch ON.

3.

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

>> END

IDLE AIR VOLUME LEARNING

EC-379

< BASIC INSPECTION >

[HR12DE (TYPE 2)]

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IDLE AIR VOLUME LEARNING

Description

INFOID:0000000006036898

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

Work Procedure

INFOID:0000000006036899

1.

PRECONDITIONING

Make sure 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 - 100

°

C (158 - 212

°

F)

• Shift lever: P or N (A/T), Neutral (M/T)
• Electric load switch: OFF

(Air conditioner, headlamp, rear window defogger)

• Steering wheel: Neutral (Straight-ahead position) position
• Vehicle speed: Stopped
• Transmission: Warmed-up
- A/T models
• With CONSULT-III: Drive vehicle until “ATF TEMP SE 1” in “DATA MONITOR” mode of “A/T” system indi-

cates less than 0.9V.

• Without CONSULT-III: Drive vehicle for 10 minutes.
- M/T models
• Drive vehicle for 10 minutes.

Do you have CONSULT-III?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

IDLE AIR VOLUME LEARNING

With CONSULT-III

1.

Perform ACCELERATOR PEDAL RELEASED POSITION LEARNING. Refer to 

EC-377, "Work Proce-

dure"

.

2.

Perform THROTTLE VALVE CLOSED POSITION LEARNING. Refer to 

EC-378, "Work Procedure"

.

3.

Start engine and warm it up to normal operating temperature.

4.

Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode with CONSULT-III.

5.

Touch “START” and wait 20 seconds.

Is “CMPLT” displayed on CONSULT-III screen?

YES

>> GO TO 4.

NO

>> GO TO 5.

3.

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-377, "Work Proce-

dure"

.

2.

Perform THROTTLE VALVE CLOSED POSITION LEARNING. Refer to 

EC-378, "Work Procedure"

.

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 five times within 5 seconds.

-

Fully depress the accelerator pedal.

-

Fully release the accelerator pedal.

EC-380

< BASIC INSPECTION >

[HR12DE (TYPE 2)]

IDLE AIR VOLUME LEARNING

7.

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

8.

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

9.

Start engine and let it idle.

10. Wait 20 seconds.

>> GO TO 4.

4.

CHECK IDLE SPEED AND IGNITION TIMING

Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifi-
cations.
For specification, refer to 

EC-315, "Idle Speed"

 and 

EC-315, "Ignition Timing"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

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

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-115, "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 all over again:
• Engine stalls.
• Erroneous idle.

>> INSPECTION END

PBIB0665E