Description

CHART 10: Erratic acceleration

Diagnosis Procedure

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 COMMUNICATION 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]".

>> GO TO 9.

9.CHECK RAIL HIGH PRESSURE CONTROL CIRCUIT

Perform the TEST 5: RAIL HIGH PRESSURE CONTROL CIRCUIT CHECK. Refer to EC-871, "Work Procedure (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-876, "Work Procedure (TEST 6: Fuel Injectors Leak Check)".

>> GO TO 11.

11.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