Nissan Altima HL32 Hybrid. Manual - part 258

EC-16

< BASIC INSPECTION >

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INSPECTION AND ADJUSTMENT

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
IDLE AIR VOLUME LEARNING : Description

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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.

IDLE AIR VOLUME LEARNING : Special Repair Requirement

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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 12.9V (At idle)

• Engine coolant temperature: 70 - 100

°C (158 - 212°F)

• Selector lever: N position

• Vehicle speed: Stopped

• Transmission: Warmed-up (Drive vehicle for 10 minutes.)
Do you have CONSULT-III?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

IDLE AIR VOLUME LEARNING

With CONSULT-III

1. Perform Throttle Valve Closed Position Learning. Refer to 

EC-15, "THROTTLE VALVE CLOSED POSI-

TION LEARNING : Special Repair Requirement"

.

2. Turn ignition switch ON (READY).

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

4. Touch “START” and wait 20 seconds.
Is “CMPLT” displayed on CONSULT-III screen?

YES

>> GO TO 3.

NO

>> GO TO 6.

3.

CHECK IDLE SPEED AND IGNITION TIMING

1. Rev up the engine two or three times.

2. Check idle speed and ignition timing are within the specifications. Refer to 

EC-470, "Idle Speed"

 and 

EC-

470, "Ignition Timing"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 6.

4.

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. Lift up the vehicle.

2. Perform Throttle Valve Closed Position Learning. Refer to 

EC-15, "THROTTLE VALVE CLOSED POSI-

TION LEARNING : Special Repair Requirement"

.

3. Turn ignition switch OFF and wait at least 10 seconds.

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

INSPECTION AND ADJUSTMENT

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5. Repeat the following procedure quickly five times within 5 seconds.

-

Fully depress the accelerator pedal.

-

Fully release the accelerator pedal.

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

blinking and turned ON.

7. Fully release the accelerator pedal and turn ignition switch ON (READY).

8. Depress the accelerator pedal and keep it to start engine within 10 seconds after the MIL turned ON.

9. Shift the selector lever to N position with engine running.

10. Fully release the accelerator pedal.

11. Wait 1 minute.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

12. Shift the selector lever to P position.

13. Depress the accelerator pedal and keep it.

14. Shift the selector lever to N position with engine running.

15. Check idle speed and ignition timing are within the specifications. Refer to 

EC-470, "Idle Speed"

 and 

EC-

470, "Ignition Timing"

.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

16. Shift the selector lever to P position.

>> GO TO 5.

5.

CHECK IDLE SPEED AND IGNITION TIMING

1. Depress the accelerator pedal and keep it.

2. Shift the selector lever to N position with engine running.

3. Check idle speed and ignition timing are within the specifications. Refer to 

EC-470, "Idle Speed"

 and 

EC-

470, "Ignition Timing"

.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

4. Shift the selector lever to P position.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 6.

6.

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?

JMBIA0455GB

EC-18

< BASIC INSPECTION >

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INSPECTION AND ADJUSTMENT

YES

>> GO TO 7.

NO

>> Repair or replace malfunctioning part.

7.

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-105, "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

MIXTURE RATIO SELF-LEARNING VALUE CLEAR
MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Description

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This describes how to erase the mixture ratio self-learning value. For the actual procedure, follow the instruc-

tions in “Diagnosis Procedure”.

MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement

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1.

START

With CONSULT-III

1. Activate “INSPECTION MODE 1” (

HBC-104

) to start engine, and warm up engine to normal operating

temperature.

2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-III.

3. Clear mixture ratio self-learning value by touching “CLEAR”.

With GST

1. Activate “INSPECTION MODE 1” (

HBC-104

) to start engine, and warm up engine to normal operating

temperature.

2. Turn ignition switch OFF.

3. Disconnect mass air flow sensor harness connector.

4. Turn ignition switch ON (READY).

5. Depress the accelerator pedal to start engine, then keep engine running for at least 5 seconds.

6. Turn ignition switch OFF and reconnect mass air flow sensor harness connector.

7. Select Service $03 with GST. Make sure DTC P0102 is detected.

8. Select Service $04 with GST to erase the DTC P0102.

>> END

ENGINE CONTROL SYSTEM

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FUNCTION DIAGNOSIS

ENGINE CONTROL SYSTEM

System Diagram

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System Description

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ECM performs various controls such as fuel injection control and ignition timing control.

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