Nissan Teana J32. Manual - part 370

EC-18

< BASIC INSPECTION >

[VQ25DE, VQ35DE]

INSPECTION AND ADJUSTMENT

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.
• Erroneous idle.

>> INSPECTION END

MIXTURE RATIO SELF-LEARNING VALUE CLEAR

MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Description

INFOID:0000000003856459

This describes show 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

INFOID:0000000003856460

1.

START

With CONSULT-III

1.

Start engine and warm it up 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.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF.

3.

Disconnect mass air flow sensor harness connector.

4.

Restart engine and let it idle for at least 5 seconds.

5.

Stop engine and reconnect mass air flow sensor harness connector.

6.

Select Service $03 with GST. Check that DTC P0102 is detected.

7.

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

>> END

ENGINE CONTROL SYSTEM

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< FUNCTION DIAGNOSIS >

[VQ25DE, VQ35DE]

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FUNCTION DIAGNOSIS

ENGINE CONTROL SYSTEM

System Diagram

INFOID:0000000003856461

JMBIA1465GB

EC-20

< FUNCTION DIAGNOSIS >

[VQ25DE, VQ35DE]

ENGINE CONTROL SYSTEM

System Description

INFOID:0000000003856462

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

Component Parts Location

INFOID:0000000003856463

1.

Intake valve timing control solenoid 
valve (bank 1)

2.

Intake valve timing control solenoid 
valve (bank 2)

3.

Electronic controlled engine mount 
control solenoid valve

4.

Fuel injector (bank 2)

5.

Cooling fan motor-2

6.

A/F sensor 1 (bank 2)

7.

Ignition coil (with power transistor) 
and spark plug (bank 2)

8.

Camshaft position sensor (PHASE) 
(bank 2)

9.

Crankshaft position sensor (POS)

10. Engine coolant temperature sensor

11.

Cooling fan motor-1

12. ECM

13. Refrigerant pressure sensor

14. Battery current sensor

15. IPDM E/R

16. Mass air flow sensor (with intake air 

temperature sensor)

17. Electric throttle control actuator

18. Power valve actuator 2 (VQ35DE 

models)

19. EVAP canister purge volume control 

solenoid valve

20. Camshaft position sensor (PHASE) 

(bank 1)

21. Ignition coil (with power transistor) 

and spark plug (bank 1)

22. A/F sensor 1 (bank 1)

23. Fuel injector (bank 1)

24. VIAS control solenoid valve 1 and 2 

(VQ35DE models)

25. Power valve actuator 1

JMBIA1373ZZ

ENGINE CONTROL SYSTEM

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< FUNCTION DIAGNOSIS >

[VQ25DE, VQ35DE]

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1.

Mass air flow sensor (with intake air 
temperature sensor)

2.

Electric throttle control actuator

: Vehicle front

1.

Ignition coil (with power transistor) 
and spark plug (bank 1)

2.

Fuel injector (bank 1)

3.

Fuel injector (bank 2)

4.

Ignition coil (with power transistor) 
and spark plug (bank 2)

5.

EVAP canister

: Vehicle front

1.

Knock sensor (bank 1)

2.

Knock sensor (bank 2)

3.

Knock sensor

: Vehicle front

JMBIA1374ZZ

JMBIA1375ZZ

JMBIA1376GB

JMBIA1377ZZ