Nissan Qashqai (2007-2010). Manual - part 484

NO ENGINE BRAKING

EC-1455

< SYMPTOM DIAGNOSIS >

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NO ENGINE BRAKING

Description

INFOID:0000000000912078

CHART 11: NO ENGINE BRAKING

Diagnosis Procedure

INFOID:0000000000912079

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 ACCELERATOR PEDAL POSITION SENSOR

Check the accelerator pedal position sensor. Refer to 

EC-1408, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace.

4.

CHECK IDLE SPEED 

Check idle speed. Refer to 

EC-1483, "Idle Speed"

.

>> GO TO 5.

5.

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 6.

6.

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

EC-1456

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LOSS OF POWER

LOSS OF POWER

Description

INFOID:0000000000912081

CHART 12: LOSS OF POWER

Diagnosis Procedure

INFOID:0000000000912082

1.

CHECK FUEL

Check that the fuel reservoir is correctly filled and with the right fuel.

>> GO TO 2.

2.

CHECK FUEL FILTER

Check the correctness of the fuel filter.
Is the fuel filter correct?

Yes

>> GO TO 3.

No

>> Replace the fuel filter with an genuine part.

3.

CHECK ENGINE OIL 

Check the grade of engine oil. Refer to 

LU-23, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace engine oil. Refer to 

LU-24, "Refilling"

4.

CHECK ENGINE OIL LEVEL

Is the engine oil level correct?

Yes or No

Yes

>> GO TO 5.

No

>> Top up the oil.

5.

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 6.

NO

>> Repair or replace harness or connector.

6.

CHECK WIRING HARNESS

Visually check the condition of the engine wiring harness.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace harness or connector.

7.

CHECK AIR INTAKE SYSTEM 

Check air intake system. Refer to 

EM-265, "Removal and Installation"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace.

8.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR

Check electric throttle control actuator. Refer to 

EC-1345, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace.

9.

CHECK MASS AIR FLOW SENSOR

Check mass air flow sensor. Refer to 

EC-1337, "Component Inspection"

.

LOSS OF POWER

EC-1457

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Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace.

10.

CHECK ACCELERATOR PEDAL POSITION SENSOR

Check the accelerator pedal position sensor. Refer to 

EC-1408, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Repair or replace.

11.

CHECK ASCD CLUTCH SWITCH 

Check ASCD clutch switch. Refer to 

EC-1401, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Repair or replace.

12.

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 13.

NO

>> Repair or replace.

13.

CHECK TURBOCHARGER

Check that the turbocharger is working properly. Refer to 

EC-1410, "Diagnosis Procedure"

.

Is the turbocharger correct?

Yes

>> GO TO 14.

No

>> Repair or replace.

14.

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 15.

NO

>> Repair or replace harness or connector.

15.

CHECK EGR SYSTEM

Check EGR system. Refer to 

EC-1415, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 16.

NO

>> Repair or replace.

16.

CHECK CATALYTIC CONVERTER

Is the catalytic converter clogged or deteriorated?

Is the inspection result normal?

YES

>> GO TO 17.

NO

>> Repair or replace.

17.

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 18.

18.

CHECK INTERNAL FUEL TRANSFER PUMP

EC-1458

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LOSS OF POWER

Perform the TEST 2: INTERNAL FUEL TRANSFER PUMP CHECK. Refer to 

EC-1263, "BASIC INSPECTION

: Special Repair Requirement (TEST 2: Internal Fuel Transfer Pump Check)"

.

>> GO TO 19.

19.

CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE)

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 20.

20.

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 21.

21.

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 22.

22.

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 23.

23.

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