Nissan Qashqai (2007-2010). Manual — part 437

INSPECTION AND ADJUSTMENT

EC-1267

< BASIC INSPECTION >

[K9K]

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2.

Start engine and let it idle speed.

3.

Select “DATA MONITOR” mode with CONSULT-III.

4.

Check that the “RAIL PRESSURE” indication under the following conditions.
NOTE:
An unusual combustion noise may be heard.

Is the inspection result normal?

YES

>> GO TO 22.

NO

>> GO TO 21.

21.

CHECK FUEL RAIL PRESSURE-II

1.

Turn ignition switch OFF.

2.

Replace fuel rail. Refer to

EM-277, "Removal and Installation"

3.

Start engine and let it idle speed.

4.

Select “DATA MONITOR” mode with CONSULT-III.

5.

Check that the “RAIL PRESSURE” indication under the following conditions.
NOTE:
An unusual combustion noise may be heard.

Is the inspection result normal?

YES

>> GO TO 22.

NO

>> Replace high pressure supply pump.

22.

INSPECTION END

High pressure supply pump (volumetric control valve) OK.

>> INSPECTION END

BASIC INSPECTION : Special Repair Requirement (TEST 6: Major Leak in Fuel Injec-
tors/Fuel Injectors Open)

INFOID:0000000001083091

NOTE:
• CONDITIONS PRIOR TO TEST
- The entire low pressure system must be in good condition.
- Check the sealing of the high pressure pipes and unions.
- Test 3 High pressure supply pump (pressure control valve) check is OK
- Test 4 High pressure supply pump (volumetric control valve) check is OK
- Test 5 Rail high pressure regulation circuit check is OK.
• CAUSE
- Not enough or no rail pressure during starting.
- The engine does not start.

1.

CHECK FUEL INJECTOR-I

Refer to

EC-1352, "Component Inspection"

.

Is the inspection result normal?

CONDITION (ENGINE SPEED)

INDICATION

At idle speed

190 - 210 bar

2000 rpm

400 - 500 bar

3000 rpm

500 - 700 bar

4000 rpm

700 - 900 bar

CONDITION (ENGINE SPEED)

INDICATION

At idle speed

190 - 210 bar

2000 rpm

400 - 500 bar

3000 rpm

500 - 700 bar

4000 rpm

700 - 900 bar

EC-1268

< BASIC INSPECTION >

[K9K]

INSPECTION AND ADJUSTMENT

YES

>> GO TO 2.

NO

>> Replace malfunctioning fuel injector.

2.

CHECK INTERNAL FUEL TRANSFER PUMP

1.

Turn ignition switch OFF.

2.

Disconnect the return system connections at the fuel injectors and close off the return pipes so they are
leak-tight.

3.

To authorise a 15 second cranking engine and carry out this test it is essential to carry out the following
procedure:

-

Disconnect high pressure supply pump (volumetric control valve) harness connector

-

Turn ignition switch ON.

-

Perform “SAVE DATA FOR CPU REPLC” in WORK SUPPORT mode with CONSULT-III.

-

Perform “PRGRM_REINITIALIZE” in WORK SUPPORT mode with CONSULT-III.

-

Cranking engine for at least 15 seconds (starting speed 250 rpm)

-

Perform “WRT DATA AFTR REPLC CPU” in WORK SUPPORT mode with CONSULT-III.

Is the return volume at the fuel injectors more than 20 ml per fuel injector for the starting phase?
NOTE:
•

Do not repeat this procedure more than 3 times and wait 30 seconds between each 15 second cranking
engine.

•

Then wait 30 minutes before cranking the engine for 3 15 second cycles.

•

Follow this manual so that the starter does not get damaged.

Does the flow measure more than 20ml?

Yes

>> Replace malfunctioning fuel injector.

No

>> GO TO 3.

3.

CHECK FUEL INJECTOR-II

1.

Turn ignition switch OFF.

2.

Reconnect return pipes.

3.

Start Engine.

4.

Select “DATA MONITOR” mode with CONSULT-III.

5.

Check “RAIL PRESSURE” and “RAIL PRES SET” indication.

6.

Does “RAIL PRESSURE” follow “RAIL PRES SET” during the 3 second cranking engine?

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK GLOW PLUG

1.

Turn ignition switch OFF.

2.

Remove the glow plugs and check for moisture.

3.

If the glow plugs are wet with fuel, it is possible that the fuel injector is leaking.

Are the glow plugs wet with fuel?

Yes

>> Replace malfunction fuel injector.

No

>> Replace high pressure supply pump.

5.

INSPECTION END

Fuel injector system OK.

>> INSPECTION END

BASIC INSPECTION : Special Repair Requirement (TEST 7: Incorrect Fuel Injection
Quantity)

INFOID:0000000001083092

NOTE:
• CONDITIONS PRIOR TO TEST
- The entire low pressure system must be in good condition.
- Check the sealing of the high pressure pipes and unions.
- Test 3 High pressure supply pump (pressure control valve) check is OK
- Test 4 High pressure supply pump (volumetric control valve) check is OK
- Test 5 Rail high pressure regulation circuit check is OK.

INSPECTION AND ADJUSTMENT

EC-1269

< BASIC INSPECTION >

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- All the electrical loads are switched off.
- Air conditioning is switched off.
• CAUSE
- The engine runs poorly at idle speed, possibly emits white smoke.

1.

CHECK FUEL INJECTOR

Refer to

EC-1352, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace malfunctioning fuel injector.

2.

CHECK ENGINE COOLANT TEMPERATURE AND FUEL TEMPERATURE

1.

Start engine let it idle speed.

2.

Select “DATA MONITOR” mode with CONSULT-III.

3.

Check “FUEL TEMP” indication is above 60

°

C (140

°

F)

4.

Check “F/FLOW CORR CYL1“, “F/FLOW CORR CYL2”, “F/FLOW CORR CYL3”, “F/FLOW CORR CYL4”
indication.

Are the reference value 0.3 - 1.9?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

CHECK INTERNAL FUEL TRANSFER PUMP

1.

Turn ignition switch OFF.

2.

Disconnect the return system connections at the fuel injectors and close off the return pipes so they are
leak-tight. While the engine is idling, check the return flow rate at the fuel injector. After 5 minutes the
return volume must be between 16 - 24 ml per fuel injector.

Is there more than 24 ml or less than 16 ml of return for each fuel injector?

Yes

>> Replace malfunctioning fuel injector.

No

>> INSPECTION END

4.

CHECK COMPRESSION PRESSURE

Check compression pressure. Refer to

EM-263, "Inspection"

.

>> INSPECTION END

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description

INFOID:0000000000894656

When replacing ECM, this procedure must be performed.

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

INFOID:0000000000903972

1.

PRECONDITIONING

• Connect a CONSULT-III
• Connect a battery charger
• Electric load switch is OFF
• Wait for the engine to cool [engine coolant temperature < 60

°

C (140

°

F and air temperature < 50

°

C (122

°

F)].

NOTE:
While the ECM is being programmed the cooling fan motors are triggered automatically.

>> GO TO 2.

2.

SAVE ECM DATA

Turn ignition switch ON.
Perform “SAVE DATA FOR CPU REPLC” in WORK SUPPORT mode with CONSULT-III.

EC-1270

< BASIC INSPECTION >

[K9K]

INSPECTION AND ADJUSTMENT

>> GO TO 3.

3.

REPLACE ECM

Replace ECM.

>> GO TO 4.

4.

WRITE ECM DATA

1.

Turn ignition switch OFF, wait at least 30 seconds and then turn ON.

2.

Perform “PRGRM_REINITIALIZE” in WORK SUPPORT mode with CONSULT-III.

3.

Perform “WRT DATA AFTR REPLC CPU” in WORK SUPPORT mode with CONSULT-III.

4.

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

SEC-8, "ECM

RE-COMMUNICATING FUNCTION : Description"

.

5.

Turn ignition switch OFF, wait at least 30 seconds and then turn ON.

6.

Select “DATA MONITOR” mode in ECM with CONSULT-III.

7.

Check that the “CODE_PROGRAM” indication.

Which is displayed on CONSULT-III?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

WRITE ECM DATA

1.

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

SEC-8, "ECM

RE-COMMUNICATING FUNCTION : Description"

.

2.

Turn ignition switch OFF, wait at least 30 seconds and then turn ON.

3.

Select “DATA MONITOR” mode in ECM with CONSULT-III.

4.

Check that the “CODE_PROGRAM” indication.

Which is displayed on CONSULT-III?

YES

>> GO TO 6.

NO

>> Repeat above steps.

6.

PERFORM VIN REGISTRATION

1.

Start engine and warm it up to normal operating temperature.
NOTE:
The start-up phase may last up to 30 seconds.

2.

Turn ignition switch OFF, wait at least 30 seconds and then turn ON.

3.

Perform “WRITE VIN” in WORK SUPPORT mode with CONSULT-III.

4.

Follow the manual of CONSULT-III display.
NOTE:
After replace ECM, stored DTC may appear on other control unit. Clear the malfunction memory of these
control unit.

>> END

EGR VOLUME CONTROL VALVE CLOSED POSITION LEARNING

EGR VOLUME CONTROL VALVE CLOSED POSITION LEARNING : Description

INFOID:0000000001082271

EGR Volume Control Valve Closed Position Learning is an operation to learn the fully closed position of the
EGR volume control valve by monitoring the EGR volume control valve control position sensor output signal.

EGR VOLUME CONTROL VALVE CLOSED POSITION LEARNING : Special Repair
Requirement

INFOID:0000000001082272

1.

START

1.

Turn ignition switch ON.

2.

Perform “EGR ADAPTIVES” in WORK SUPPORT mode with CONSULT-III.

3.

Turn ignition switch OFF.and wait at least 30 seconds.

4.

Start engine and let it idle.