Infiniti M35/M45 Y50. Manual - part 577

BASIC SERVICE PROCEDURE

EC-781

[VK45DE]

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3. 

CHECK TARGET IDLE SPEED

 With CONSULT-II

1.

Run engine at about 2,000 rpm for about 2 minutes under no load.

2.

Rev engine (2,000 to 3,000 rpm) two or three times under no
load, then run engine at idle speed for about 1 minute.

3.

Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Refer to 

EC-785, "IDLE SPEED"

 .

 Without CONSULT-II

1.

Run engine at about 2,000 rpm for about 2 minutes under no load.

2.

Rev engine (2,000 to 3,000 rpm) two or three times under no load, then run engine at idle speed for about
1 minute.

3.

Check idle speed.
Refer to 

EC-785, "IDLE SPEED"

 .

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 4.

4. 

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1.

Stop engine.

2.

Perform 

EC-788, "Accelerator Pedal Released Position Learning"

 .

>> GO TO 5.

5. 

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform 

EC-788, "Throttle Valve Closed Position Learning"

 .

>> GO TO 6.

PBIA8513J

650 

±

 50 rpm (in P or N position)

SEF058Y

650 

±

 50 rpm (in P or N position)

EC-782

[VK45DE]

BASIC SERVICE PROCEDURE

6. 

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

EC-788, "Idle Air Volume Learning"

 .

Is Idle Air Volume Learning carried out successfully?

Yes or No

Yes

>> GO TO 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-785, "IDLE SPEED"

 .

 Without CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Check idle speed.
Refer to 

EC-785, "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-1082, "DTC P0340 CAMSHAFT POSI-

TION (CMP) SENSOR (PHASE)"

 .

●

Check crankshaft position sensor (POS) and circuit. Refer to 

EC-1075, "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-248, "ECM Re-Communicating Function"

 .

>> GO TO 4.

650 

±

 50 rpm (in P or N position)

SEF174Y

650 

±

 50 rpm (in P or N position)

BASIC SERVICE PROCEDURE

EC-783

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10. 

CHECK IGNITION TIMING

1.

Run engine at idle.

2.

Check ignition timing with a timing light.
Refer to 

EC-785, "IGNITION TIMING"

 .

–

Timing indicator (1)

OK or NG

OK

>> GO TO 19.

NG

>> GO TO 11.

11. 

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1.

Stop engine.

2.

Perform 

EC-788, "Accelerator Pedal Released Position Learning"

 .

>> GO TO 12.

12. 

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform 

EC-788, "Throttle Valve Closed Position Learning"

 .

>> GO TO 13.

13. 

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

EC-788, "Idle Air Volume Learning"

 .

Is Idle Air Volume Learning carried out successfully?

Yes or No

Yes

>> GO TO 14.

No

>> 1. Follow the instruction of Idle Air Volume Learning.

2. GO TO 4.

12 

±

 5

°

 BTDC (in P or N position)

PBIB2719E

EC-784

[VK45DE]

BASIC SERVICE PROCEDURE

14. 

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-785, "IDLE SPEED"

 .

 Without CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Check idle speed.
Refer to 

EC-785, "IDLE SPEED"

 .

OK or NG

OK

>> GO TO 15.

NG

>> GO TO 17.

15. 

CHECK IGNITION TIMING AGAIN

1.

Run engine at idle.

2.

Check ignition timing with a timing light.
Refer to 

EC-785, "IGNITION TIMING"

 .

–

Timing indicator (1)

OK or NG

OK

>> GO TO 19.

NG

>> GO TO 16.

16. 

CHECK TIMING CHAIN INSTALLATION

Check timing chain installation. Refer to 

EM-203, "TIMING CHAIN"

 .

OK or NG

OK

>> GO TO 17.

NG

>> 1. Repair the timing chain installation.

2. GO TO 4.

650 

±

 50 rpm (in P or N position)

SEF174Y

650 

±

 50 rpm (in P or N position)

12 

±

 5

°

 BTDC (in P or N position)

PBIB2719E