Nissan Qashqai (2007-2010). Manual — part 485
TOO MUCH POWER
EC-1459
< SYMPTOM DIAGNOSIS >
[K9K]
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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)"
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
.
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
.
>> 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
.
>> GO TO 10.
10.
CHECK RAIL HIGH PRESSURE CONTROL CIRCUIT
Perform the TEST 5: RAIL HIGH PRESSURE CONTROL CIRCUIT CHECK. Refer to
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
.
>> GO TO 12.
12.
CHECK INCORRECT FUEL INJECTION QUANTITY
Perform the TEST 7: INCORRECT FUEL INJECTION QUANTITY. Refer to
Special Repair Requirement (TEST 7: Incorrect Fuel Injection Quantity)"
>> INSPECTION END
OVERSPEED AT IDLE SPEED OR ON RELEASING BRAKE
EC-1461
< SYMPTOM DIAGNOSIS >
[K9K]
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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
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace engine oil. Refer to
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
.
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
17, "CONSULT-III Function (ABS)"
(without ESP) or
BRC-96, "CONSULT-III Function (ABS)"
Is the inspection result normal?
YES
>> INSPECTION END.
NO
>> Repair or replace.
EC-1462
< SYMPTOM DIAGNOSIS >
[K9K]
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
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