Nissan Qashqai (2007-2010). Manual - part 485

TOO MUCH POWER

EC-1459

< SYMPTOM DIAGNOSIS >

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TOO MUCH POWER

Description

INFOID:0000000000912084

CHART 13: TOO MUCH POWER

Diagnosis Procedure

INFOID:0000000000912085

1.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to 

EC-1317, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connector.

2.

CHECK WIRING HARNESS

Visually check the condition of the engine wiring harness.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

Check engine coolant temperature sensor. Refer to 

EC-1344, "Component Inspection"

.

Is the turbocharger correct?

Yes

>> GO TO 4.

No

>> Repair or replace.

4.

CHECK TURBOCHARGER

Check that the turbocharger is working properly. Refer to 

EC-1410, "Diagnosis Procedure"

.

Is the turbocharger correct?

Yes

>> GO TO 5.

No

>> Repair or replace.

5.

CHECK CLUTCH SWITCH 

Check clutch switch. Refer to 

EC-1401, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace.

6.

CHECK VEHICLE SPEED SIGNAL

Check the following component.
• “ABS actuator and electric unit (control unit)” [Refer to 

BRC-17, "CONSULT-III Function (ABS)"

 (without

ESP) or 

BRC-96, "CONSULT-III Function (ABS)"

 (with ESP).]

• Combination meter (Refer to 

MWI-23, "CONSULT-III Function (METER/M&A)"

.)

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace.

7.

CHECK CAN COMMUNICATION

Perform trouble diagnosis on the CAN communication line using CONSULT-III. Refer to 

LAN-59, "CAN Com-

munication Signal Chart"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace harness or connector.

8.

CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE)

EC-1460

< SYMPTOM DIAGNOSIS >

[K9K]

TOO MUCH POWER

Perform the TEST 3: HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE). Refer to 

EC-1263,

"BASIC INSPECTION : Special Repair Requirement [TEST 3: High Pressure Supply Pump (Pressure Control
Valve) Check]"

.

>> GO TO 9.

9.

CHECK HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE)

Perform the TEST 4: HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE). Refer to 

EC-

1264, "BASIC INSPECTION : Special Repair Requirement [TEST 4: High Pressure Supply Pump (Volumetric
Control Valve) Check]"

.

>> GO TO 10.

10.

CHECK RAIL HIGH PRESSURE CONTROL CIRCUIT

Perform the TEST 5: RAIL HIGH PRESSURE CONTROL CIRCUIT CHECK. Refer to 

EC-1267, "BASIC

INSPECTION : Special Repair Requirement (TEST 5: Rail High Pressure Regulation Check)"

.

>> GO TO 11.

11.

CHECK MAJOR LEAK IN FUEL INJECTOR/FUEL INJECTORS OPEN

Perform the TEST 6: MAJOR LEAK IN FUEL INJECTOR/FUEL INJECTORS OPEN. Refer to 

EC-1271,

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

.

>> GO TO 12.

12.

CHECK INCORRECT FUEL INJECTION QUANTITY

Perform the TEST 7: INCORRECT FUEL INJECTION QUANTITY. Refer to 

EC-1272, "BASIC INSPECTION :

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

.

>> INSPECTION END

OVERSPEED AT IDLE SPEED OR ON RELEASING BRAKE

EC-1461

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OVERSPEED AT IDLE SPEED OR ON RELEASING BRAKE

Description

INFOID:0000000000912087

CHART 14: OVERSPEED AT IDLE SPEED OR ON RELEASING BRAKE

Diagnosis Procedure

INFOID:0000000000912088

1.

CHECK ENGINE OIL 

Check the grade of engine oil. Refer to 

LU-23, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace engine oil. Refer to 

LU-24, "Refilling"

2.

CHECK ENGINE OIL LEVEL

Is the engine oil level correct?

Yes or No

Yes

>> GO TO 3.

No

>> Top up the oil.

3.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to 

EC-1317, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness or connector.

4.

CHECK WIRING HARNESS

Visually check the condition of the engine wiring harness.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness or connector.

5.

CHECK CAN COMMUNICATION

Perform trouble diagnosis on the CAN communication line using CONSULT-III. Refer to 

LAN-59, "CAN Com-

munication Signal Chart"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness or connector.

6.

CHECK “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”

Perform trouble diagnosis on the “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”. Refer to 

BRC-

17, "CONSULT-III Function (ABS)"

 (without ESP) or 

BRC-96, "CONSULT-III Function (ABS)"

 (with ESP).

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> Repair or replace.

EC-1462

< SYMPTOM DIAGNOSIS >

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EXCESSIVE CONSUMPTION

EXCESSIVE CONSUMPTION

Description

INFOID:0000000000912090

CHART 15:EXCESSIVE CONSUMPTION

Diagnosis Procedure

INFOID:0000000000912091

1.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to 

EC-1317, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connector.

2.

CHECK WIRING HARNESS

Visually check the condition of the engine wiring harness.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK AIR INTAKE SYSTEM 

Check air intake system. Refer to 

EM-265, "Removal and Installation"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace air intake system.

4.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR

Check electric throttle control actuator. Refer to 

EC-1345, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace.

5.

CHECK MASS AIR FLOW SENSOR

Check mass air flow sensor. Refer to 

EC-1337, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace.

6.

CHECK TURBOCHARGER

Check that the turbocharger is working properly. Refer to 

EC-1410, "Diagnosis Procedure"

.

Is the turbocharger correct?

Yes

>> GO TO 7.

No

>> Repair or replace.

7.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

Check engine coolant temperature sensor. Refer to 

EC-1344, "Component Inspection"

.

Is the inspection result normal?

Yes

>> GO TO 8.

No

>> Repair or replace.

8.

CHECK LOW PRESSURE CIRCUIT

Perform the TEST 1: LOW PRESSURE CIRCUIT CHECK. Refer to 

EC-1262, "BASIC INSPECTION : Special

Repair Requirement (TEST 1: Low Pressure Fuel Supply System Check)"

.

>> GO TO 9.

9.

CHECK INTERNAL FUEL TRANSFER PUMP