Nissan Qashqai (2007-2010). Manual — part 282

INSPECTION AND ADJUSTMENT

EC-647

< BASIC INSPECTION >

[MR20DE (WITH EURO-OBD)]

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>> 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-981, "Idle Speed"

and

EC-981, "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-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 all over again:
• Engine stalls.
• Erroneous idle.

>> INSPECTION END

MIXTURE RATIO SELF-LEARNING VALUE CLEAR

MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Description

INFOID:0000000001092493

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

INFOID:0000000001092494

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. Make sure DTC P0102 is detected.

7.

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

>> END

EC-648

< FUNCTION DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

ENGINE CONTROL SYSTEM

FUNCTION DIAGNOSIS

ENGINE CONTROL SYSTEM

System Diagram

INFOID:0000000000936604

System Description

INFOID:0000000000936605

JMBIA0453GB

ENGINE CONTROL SYSTEM

EC-649

< FUNCTION DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

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

Component Parts Location

INFOID:0000000001093462

1.

Ignition coil (with power transistor)
and spark plug

2.

PCV valve

3.

Refrigerant pressure sensor

4.

Fuel injector

5.

Knock sensor

6.

Cooling fan motor

7.

Camshaft position sensor (PHASE)

8.

Engine coolant temperature sensor

9.

IPDM E/R

10. ECM

11.

Mass air flow sensor (with intake
temperature sensor)

12. Electric throttle control actuator

(with built in throttle position sensor
and throttle control motor)

13. EVAP canister purge volume control

solenoid valve

1.

ECM

2.

IPDM E/R

3.

Fuel pump fuse (15A)

JMBIA0338ZZ

JMBIA0340ZZ

EC-650

< FUNCTION DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

ENGINE CONTROL SYSTEM

1.

Electric throttle control actuator
(with built-in position sensor, throttle
control motor)

2.

Throttle valve

1.

EVAP canister purge volume control
solenoid valve

2.

Mass air flow sensor
(with intake air temperature sensor)

1.

Camshaft position sensor

2.

Engine coolant temperature sensor

JMBIA0341ZZ

JMBIA0342ZZ

JMBIA0343ZZ