Nissan Qashqai (2007-2010). Manual - part 483

ENGINE BUCKING

EC-1451

< SYMPTOM DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

ENGINE BUCKING

Description

INFOID:0000000000912072

CHART 9: ENGINE BUCKING

Diagnosis Procedure

INFOID:0000000000912073

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 ASCD CLUTCH SWITCH 

Check ASCD clutch switch. Refer to 

EC-1401, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace.

5.

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 6.

NO

>> Repair or replace.

6.

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 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 air intake system.

8.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR

Check electric throttle control actuator. Refer to 

EC-1345, "Diagnosis Procedure"

.

Is the inspection result normal?

EC-1452

< SYMPTOM DIAGNOSIS >

[K9K]

ENGINE BUCKING

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"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace.

10.

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 11.

11.

CHECK INTERNAL FUEL TRANSFER PUMP

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 12.

12.

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 13.

13.

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 14.

14.

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 15.

15.

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 16.

16.

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

ERRATIC ACCELERATION

EC-1453

< SYMPTOM DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

ERRATIC ACCELERATION

Description

INFOID:0000000000912075

CHART 10: Erratic acceleration

Diagnosis Procedure

INFOID:0000000000912076

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 ASCD CLUTCH SWITCH 

Check ASCD clutch switch. Refer to 

EC-1401, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace.

5.

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 6.

NO

>> Repair or replace.

6.

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 7.

NO

>> Repair or replace harness or connector.

7.

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 8.

8.

CHECK HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE)

EC-1454

< SYMPTOM DIAGNOSIS >

[K9K]

ERRATIC ACCELERATION

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 9.

9.

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 10.

10.

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 11.

11.

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