Nissan Qashqai (2007-2010). Manual — part 281

INSPECTION AND ADJUSTMENT

EC-643

< BASIC INSPECTION >

[MR20DE (WITH EURO-OBD)]

17.

DETECT MALFUNCTIONING PART

Check the following.
• Check camshaft position sensor (PHASE) and circuit. Refer to

EC-813, "DTC Logic"

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

EC-809, "DTC Logic"

Is the inspection result normal?

YES

>> GO TO 18.

>> Repair or replace. Then GO TO 4

18.

CHECK ECM FUNCTION

Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)

Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to

SEC-8, "ECM

RE-COMMUNICATING FUNCTION : Description"

>> GO TO 4.

19.

INSPECTION END

If ECM is replaced during this BASIC INSPECTION procedure, go to

EC-645, "ADDITIONAL SERVICE

WHEN REPLACING CONTROL UNIT : Special Repair Requirement"

>> INSPECTION END

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description

INFOID:0000000000936582

When replacing ECM, this procedure must be performed.

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement

INFOID:0000000000936583

PERFORM INITIALIZATION OF NATS SYSTEM AND REGISTRATION OF ALL NATS IGNITION KEY IDS

Refer to

SEC-8, "ECM RE-COMMUNICATING FUNCTION : Description"

>> GO TO 2.

PERFORM VIN REGISTRATION

Refer to

EC-646, "VIN REGISTRATION : Special Repair Requirement"

>> GO TO 3.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

Refer to

EC-647, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-

ment"

>> GO TO 4.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to

EC-647, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 5.

PERFORM IDLE AIR VOLUME LEARNING

Refer to

EC-647, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

>> END

EC-644

< BASIC INSPECTION >

[MR20DE (WITH EURO-OBD)]

INSPECTION AND ADJUSTMENT

IDLE SPEED

IDLE SPEED : Description

INFOID:0000000000936584

This describes how to check the idle speed. For the actual procedure, follow the manuals in “BASIC
INSPECTION”.

IDLE SPEED : Special Repair Requirement

INFOID:0000000000936585

CHECK IDLE SPEED

With CONSULT-III

Check idle speed in “DATA MONITOR” mode with CONSULT-III.

With GST

Check idle speed with Service $01 of GST.

>> INSPECTION END

IGNITION TIMING

IGNITION TIMING : Description

INFOID:0000000000936586

This describes how to check the ignition timing. For the actual procedure, follow the manuals in “BASIC
INSPECTION”.

IGNITION TIMING : Special Repair Requirement

INFOID:0000000000936587

CHECK IGNITION TIMING

Attach timing light to the ignition coil No.4 harness.

Check ignition timing.

>> INSPECTION END

VIN REGISTRATION

VIN REGISTRATION : Description

INFOID:0000000000936588

VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is replaced.
NOTE:
Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).

VIN REGISTRATION : Special Repair Requirement

INFOID:0000000000936589

CHECK VIN

Check the VIN of the vehicle and note it. Refer to

GI-22, "Information About Identification or Model Code"

>> GO TO 2.

PERFORM VIN REGISTRATION

With CONSULT-III

Turn ignition switch ON and engine stopped.

Select “VIN REGISTRATION” in “WORK SUPPORT” mode.

Follow the manual of CONSULT-III display.

: Timing indicator

PBIB3263E

INSPECTION AND ADJUSTMENT

EC-645

< BASIC INSPECTION >

[MR20DE (WITH EURO-OBD)]

>> END

ACCELERATOR PEDAL RELEASED POSITION LEARNING

ACCELERATOR PEDAL RELEASED POSITION LEARNING : Description

INFOID:0000000000936590

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.

ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Re-
quirement

INFOID:0000000000936591

START

Make sure that accelerator pedal is fully released.

Turn ignition switch ON and wait at least 2 seconds.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON and wait at least 2 seconds.

Turn ignition switch OFF and wait at least 10 seconds.

>> END

THROTTLE VALVE CLOSED POSITION LEARNING

THROTTLE VALVE CLOSED POSITION LEARNING : Description

INFOID:0000000000936592

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.

THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement

INFOID:0000000000936593

START

Make sure that accelerator pedal is fully released.

Turn ignition switch ON.

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

INFOID:0000000000936594

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

INFOID:0000000000936595

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

• PNP switch: ON
• Electric load switch: OFF

(Air conditioner, headlamp, rear window defogger)

EC-646

< BASIC INSPECTION >

[MR20DE (WITH EURO-OBD)]

INSPECTION AND ADJUSTMENT

On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light only
small lamps.

• Steering wheel: Neutral (Straight-ahead position)
• Vehicle speed: Stopped
• Transmission: Warmed-up
- CVT models
• With CONSULT-III: Drive vehicle until “ATF TENP SEN” in “DATA MONITOR” mode of “CVT” 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.

>> GO TO 3.

IDLE AIR VOLUME LEARNING

With CONSULT-III

Perform Accelerator Pedal Released Position Learning. Refer to

EC-647, "ACCELERATOR PEDAL

RELEASED POSITION LEARNING : Special Repair Requirement"

Perform Throttle Valve Closed Position Learning. Refer to

EC-647, "THROTTLE VALVE CLOSED POSI-

TION LEARNING : Special Repair Requirement"

Start engine and warm it up to normal operating temperature.

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

Touch “START” and wait 20 seconds.

Is “CMPLT” displayed on CONSULT-III screen?

YES

>> GO TO 4.

>> GO TO 5.

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.

Perform Accelerator Pedal Released Position Learning. Refer to

EC-647, "ACCELERATOR PEDAL

RELEASED POSITION LEARNING : Special Repair Requirement"

Perform Throttle Valve Closed Position Learning. Refer to

EC-647, "THROTTLE VALVE CLOSED POSI-

TION LEARNING : Special Repair Requirement"

Start engine and warm it up to normal operating temperature.

Turn ignition switch OFF and wait at least 10 seconds.

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

Repeat the following procedure quickly five times within 5 seconds.

Fully depress the accelerator pedal.