Juke F15 (2012 year). Service Repair Manual — part 176

ENGINE DOES NOT START OR STARTS WITH DIFFICULTY

EC-1025

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ENGINE DOES NOT START OR STARTS WITH DIFFICULTY

Description

INFOID:0000000006496754

CHART 2: ENGINE DOES NOT START OR STARTS WITH DIFFICULTY

Diagnosis Procedure

INFOID:0000000006496755

1.

CHECK FUEL

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

>> GO TO 2.

2.

CHECK BATTERY

Check the battery. Refer to

PG-124, "Removal and Installation"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace battery. Refer to

PG-124, "Removal and Installation"

.

3.

CHECK STARTER MOTOR

Check the starter and starter control relay. Refer to

STR-8, "STARTING SYSTEM (WITH INTELLIGENT KEY)

: System Description"

,

STR-9, "STARTING SYSTEM (WITHOUT INTELLIGENT KEY) : System Description"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace starter motor or starter control relay.

4.

CHECK ECM RELAY

Check the ECM relay. Refer to

EC-976, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace IPDM E/R. Refer to

PCS-34, "Removal and Installation"

(With intelligent key system),

PCS-63, "Removal and Installation"

(With intelligent key system).

5.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to

EC-885, "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 CAMSHAFT POSITION SENSOR

Check the camshaft position sensor. Refer to

EC-935, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace.

8.

CHECK CAMSHAFT

Check the camshaft. Refer to

EC-935, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace camshaft.

EC-1026

< SYMPTOM DIAGNOSIS >

[K9K]

ENGINE DOES NOT START OR STARTS WITH DIFFICULTY

9.

CHECK AIR INTAKE SYSTEM

Check air intake system. Refer to

EM-280, "Removal and Installation"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace air intake system. Refer to

EM-280, "Removal and Installation"

.

10.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR

Check electric throttle control actuator. Refer to

EC-909, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Repair or replace.

11.

CHECK LOW PRESSURE CIRCUIT

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

EC-867, "Work Procedure (TEST 1: Low

Pressure Fuel Supply System Check)"

.

>> GO TO 12.

12.

CHECK INTERNAL FUEL TRANSFER PUMP

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

EC-868, "Work Procedure

(TEST 2: Internal Fuel Transfer Pump Check)"

.

>> GO TO 13.

13.

CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE)

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

EC-868,

"Work Procedure [TEST 3: High Pressure Supply Pump (Pressure Control Valve) Check]"

.

>> GO TO 14.

14.

CHECK HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE)

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

EC-

869, "Work Procedure [TEST 4: High Pressure Supply Pump (Volumetric Control Valve) Check]"

.

>> GO TO 15.

15.

CHECK RAIL HIGH PRESSURE CONTROL CIRCUIT

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

EC-871, "Work Proce-

dure (TEST 5: Rail High Pressure Regulation Check)"

.

>> GO TO 16.

16.

CHECK MAJOR LEAK IN FUEL INJECTORS/FUEL INJECTORS OPEN

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

EC-876, "Work

Procedure (TEST 6: Fuel Injectors Leak Check)"

.

>> GO TO 17.

17.

CHECK INCORRECT FUEL INJECTION QUANTITY

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

EC-877, "Work Procedure (TEST

7: Fuel Injection Quantity Check)"

.

>> INSPECTION END

STARTING DIFFICULT WITH COLD ENGINE

EC-1027

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STARTING DIFFICULT WITH COLD ENGINE

Description

INFOID:0000000006496756

CHART 3: STARTING DIFFICULT WITH COLD ENGINE

Diagnosis Procedure

INFOID:0000000006496757

1.

CHECK ENGINE OIL LEVEL

Is the engine oil level correct?

Yes or No

Yes

>> GO TO 2.

No

>> Top up the oil.

2.

CHECK ENGINE OIL

Check the grade of engine oil. Refer to

LU-33, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace engine oil. Refer to

LU-34, "Draining"

,

LU-34, "Refilling"

.

3.

CHECK BATTERY

Check the battery. Refer to

PG-113, "Work Flow"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace battery. Refer to

PG-124, "Removal and Installation"

.

4.

CHECK STARTER MOTOR

Check the starter motor. Refer to

STR-8, "STARTING SYSTEM (WITH INTELLIGENT KEY) : System Descrip-

tion"

(With intelligent key),

STR-9, "STARTING SYSTEM (WITHOUT INTELLIGENT KEY) : System Descrip-

tion"

(With intelligent key).

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace starter motor.

5.

CHECK COMPONENT PART

Check the following.
• Engine coolant temperature sensor. Refer to

EC-908, "Component Inspection"

.

• Fuel temperature sensor. Refer to

EC-916, "Component Inspection"

.

• Intake air temperature sensor. Refer to

EC-906, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace.

6.

CHECK GLOW SYSTEM

Check the glow system. Refer to

EC-936, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace glow system. Refer to

EM-292, "Removal and Installation"

.

7.

CHECK LOW PRESSURE CIRCUIT

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

EC-867, "Work Procedure (TEST 1: Low

Pressure Fuel Supply System Check)"

.

>> GO TO 8.

8.

CHECK INTERNAL FUEL TRANSFER PUMP

EC-1028

< SYMPTOM DIAGNOSIS >

[K9K]

STARTING DIFFICULT WITH COLD ENGINE

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

EC-868, "Work Procedure

(TEST 2: Internal Fuel Transfer Pump Check)"

.

>> GO TO 9.

9.

CHECK COMPRESSION PRESSURE

Check the compression pressure.

>> INSPECTION END

IMPOSSIBLE TO SHUT OFF ENGINE

EC-1029

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IMPOSSIBLE TO SHUT OFF ENGINE

Description

INFOID:0000000006496758

CHART 4: IMPOSSIBLE TO SHUT OFF ENGINE

Diagnosis Procedure

INFOID:0000000006496759

1.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to

EC-885, "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

>> INSPECTION END

NO

>> Repair or replace harness or connector.

EC-1030

< SYMPTOM DIAGNOSIS >

[K9K]

ENGINE IDLE SPEED TOO HIGH

ENGINE IDLE SPEED TOO HIGH

Description

INFOID:0000000006496760

CHART 5: ENGINE IDLE SPEED TOO HIGH

Diagnosis Procedure

INFOID:0000000006496761

1.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to

EC-885, "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-1001, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace.

ENGINE IDLE SPEED TOO LOW OR UNSTABLE

EC-1031

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ENGINE IDLE SPEED TOO LOW OR UNSTABLE

Description

INFOID:0000000006496762

CHART 6: ENGINE IDLE SPEED TOO LOW OR UNSTABLE

Diagnosis Procedure

INFOID:0000000006496763

1.

CHECK FUEL

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

>> GO TO 2.

2.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to

EC-885, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK WIRING HARNESS

Visually check the condition of the engine wiring harness.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness or connector.

4.

CHECK AIR INTAKE SYSTEM

Check air intake system. Refer to

EM-280, "Removal and Installation"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace air intake system. Refer to

EM-280, "Removal and Installation"

.

5.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR

Check electric throttle control actuator. Refer to

EC-909, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace.

6.

CHECK MASS AIR FLOW SENSOR

Check mass air flow sensor. Refer to

EC-902, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace.

7.

CHECK REFRIGERANT PRESSURE SENSOR

Check refrigerant pressure sensor. Refer to

EC-960, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace.

8.

CHECK EGR SYSTEM

Check EGR system. Refer to

EC-954, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace.

9.

CHECK CATALYTIC CONVERTER

Is the catalytic converter clogged or deteriorated?

EC-1032

< SYMPTOM DIAGNOSIS >

[K9K]

ENGINE IDLE SPEED TOO LOW OR UNSTABLE

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-867, "Work Procedure (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-868, "Work Procedure

(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-868,

"Work Procedure [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-

869, "Work Procedure [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-871, "Work Proce-

dure (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-876, "Work

Procedure (TEST 6: Fuel Injectors Leak Check)"

.

>> GO TO 16.

16.

CHECK INCORRECT FUEL INJECTION QUANTITY

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

EC-877, "Work Procedure (TEST

7: Fuel Injection Quantity Check)"

.

>> INSPECTION END

ENGINE STALLING

EC-1033

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ENGINE STALLING

Description

INFOID:0000000006496764

CHART 7: ENGINE STALLING

Diagnosis Procedure

INFOID:0000000006496765

1.

CHECK FUEL

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

>> GO TO 2.

2.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to

EC-885, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK WIRING HARNESS

Visually check the condition of the engine wiring harness.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness or connector.

4.

CHECK AIR INTAKE SYSTEM

Check air intake system. Refer to

EM-280, "Removal and Installation"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace air intake system.

5.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR

Check electric throttle control actuator. Refer to

EC-909, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace.

6.

CHECK MASS AIR FLOW SENSOR

Check mass air flow sensor. Refer to

EC-902, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace.

7.

CHECK EGR SYSTEM

Check EGR system. Refer to

EC-954, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace.

8.

CHECK CATALYTIC CONVERTER

Is the catalytic converter clogged or deteriorated?

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace.

9.

CHECK CAN COMMUNICATION

EC-1034

< SYMPTOM DIAGNOSIS >

[K9K]

ENGINE STALLING

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

LAN-31, "CAN COM-

MUNICATION SYSTEM : CAN Communication Signal Chart"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace harness or connector.

10.

CHECK LOW PRESSURE CIRCUIT

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

EC-867, "Work Procedure (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-868, "Work Procedure

(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-868,

"Work Procedure [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-

869, "Work Procedure [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-871, "Work Proce-

dure (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-876, "Work

Procedure (TEST 6: Fuel Injectors Leak Check)"

.

>> GO TO 16.

16.

CHECK INCORRECT FUEL INJECTION QUANTITY

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

EC-877, "Work Procedure (TEST

7: Fuel Injection Quantity Check)"

.

>> INSPECTION END

NO OR VERY LITTLE ACCELERATION, INCREASE IN ENGINE SPEED

EC-1035

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NO OR VERY LITTLE ACCELERATION, INCREASE IN ENGINE SPEED

Description

INFOID:0000000006496766

CHART 8: NO OR VERY LITTLE ACCELERATION, INCREASE IN ENGINE SPEED

Diagnosis Procedure

INFOID:0000000006496767

1.

CHECK FUEL

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

>> GO TO 2.

2.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to

EC-885, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK WIRING HARNESS

Visually check the condition of the engine wiring harness.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness or connector.

4.

CHECK AIR INTAKE SYSTEM

Check air intake system. Refer to

EM-280, "Removal and Installation"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace air intake system.

5.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR

Check electric throttle control actuator. Refer to

EC-909, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace.

6.

CHECK MASS AIR FLOW SENSOR

Check mass air flow sensor. Refer to

EC-902, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace.

7.

CHECK TURBOCHARGER

Check that the turbocharger is working properly. Refer to

EC-1003, "Diagnosis Procedure"

.

Is the turbocharger correct?

Yes

>> GO TO 8.

No

>> Repair or replace.

8.

CHECK ACCELERATOR PEDAL POSITION SENSOR

Check the accelerator pedal position sensor. Refer to

EC-1001, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace.

9.

CHECK EGR SYSTEM

Check EGR system. Refer to

EC-954, "Diagnosis Procedure"

.

EC-1036

< SYMPTOM DIAGNOSIS >

[K9K]

NO OR VERY LITTLE ACCELERATION, INCREASE IN ENGINE SPEED

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace.

10.

CHECK CATALYTIC CONVERTER

Is the catalytic converter clogged or deteriorated?
Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Repair or replace.

11.

CHECK CAN COMMUNICATION

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

LAN-31, "CAN COM-

MUNICATION SYSTEM : CAN Communication Signal Chart"

.

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Repair or replace harness or connector.

12.

CHECK LOW PRESSURE CIRCUIT

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

EC-867, "Work Procedure (TEST 1: Low

Pressure Fuel Supply System Check)"

.

>> GO TO 13.

13.

CHECK INTERNAL FUEL TRANSFER PUMP

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

EC-868, "Work Procedure

(TEST 2: Internal Fuel Transfer Pump Check)"

.

>> GO TO 14.

14.

CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE)

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

EC-868,

"Work Procedure [TEST 3: High Pressure Supply Pump (Pressure Control Valve) Check]"

.

>> GO TO 15.

15.

CHECK HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE)

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

EC-

869, "Work Procedure [TEST 4: High Pressure Supply Pump (Volumetric Control Valve) Check]"

.

>> GO TO 16.

16.

CHECK RAIL HIGH PRESSURE CONTROL CIRCUIT

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

EC-871, "Work Proce-

dure (TEST 5: Rail High Pressure Regulation Check)"

.

>> GO TO 17.

17.

CHECK MAJOR LEAK IN FUEL INJECTOR/FUEL INJECTORS OPEN

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

EC-876, "Work

Procedure (TEST 6: Fuel Injectors Leak Check)"

.

>> GO TO 18.

18.

CHECK INCORRECT FUEL INJECTION QUANTITY

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

EC-877, "Work Procedure (TEST

7: Fuel Injection Quantity Check)"

.

NO OR VERY LITTLE ACCELERATION, INCREASE IN ENGINE SPEED

EC-1037

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>> INSPECTION END

EC-1038

< SYMPTOM DIAGNOSIS >

[K9K]

ENGINE BUCKING

ENGINE BUCKING

Description

INFOID:0000000006496768

CHART 9: ENGINE BUCKING

Diagnosis Procedure

INFOID:0000000006496769

1.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to

EC-885, "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-1001, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace.

4.

CHECK CLUTCH PEDAL POSITION SWITCH

Check clutch pedal position switch.

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-24, "CONSULT-III Function"

. (Without ESP),

BRC-131, "CONSULT-III Function"

. (With ESP)]

• Combination meter (Refer to

MWI-23, "CONSULT-III Function"

.)

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-31, "CAN COM-

MUNICATION SYSTEM : CAN Communication 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-280, "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-909, "Diagnosis Procedure"

.

Is the inspection result normal?

ENGINE BUCKING

EC-1039

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YES

>> GO TO 9.

NO

>> Repair or replace.

9.

CHECK MASS AIR FLOW SENSOR

Check mass air flow sensor. Refer to

EC-902, "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-867, "Work Procedure (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-868, "Work Procedure

(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-868,

"Work Procedure [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-

869, "Work Procedure [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-871, "Work Proce-

dure (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-876, "Work

Procedure (TEST 6: Fuel Injectors Leak Check)"

.

>> GO TO 16.

16.

CHECK INCORRECT FUEL INJECTION QUANTITY

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

EC-877, "Work Procedure (TEST

7: Fuel Injection Quantity Check)"

.

>> INSPECTION END

EC-1040

< SYMPTOM DIAGNOSIS >

[K9K]

ERRATIC ACCELERATION

ERRATIC ACCELERATION

Description

INFOID:0000000006496770

CHART 10: Erratic acceleration

Diagnosis Procedure

INFOID:0000000006496771

1.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to

EC-885, "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-1001, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace.

4.

CHECK CLUTCH PEDAL POSITION SWITCH

Check clutch pedal position switch.

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-24, "CONSULT-III Function"

. (Without ESP),

BRC-131, "CONSULT-III Function"

. (With ESP)]

• Combination meter (Refer to

MWI-23, "CONSULT-III Function"

.)

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-31, "CAN COM-

MUNICATION SYSTEM : CAN Communication 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-868,

"Work Procedure [TEST 3: High Pressure Supply Pump (Pressure Control Valve) Check]"

.

>> GO TO 8.

8.

CHECK HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE)

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

EC-

869, "Work Procedure [TEST 4: High Pressure Supply Pump (Volumetric Control Valve) Check]"

.