Diagnosis Procedure

If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.

Is applicable DTC detected?

YES

Perform diagnosis of applicable. Refer to DTC Description .

NO

GO TO 2.

1. Disconnect accelerator pedal position (APP) sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between APP sensor harness connector and ground.

   +		-	Voltage (Approx.)
   APP sensor
   Connector	Terminal
   E40	4	Ground	5 V

Is the inspection result normal?

YES

GO TO 4.

NO

GO TO 3.

1. Turn ignition switch OFF
2. Disconnect ECM harness connector.
3. Check the voltage between APP sensor harness connector and ECM harness connector.

   APP sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E40	4	E10	146	Existed

Is the inspection result normal?

YES

INSPECTION END

NO

Repair or replace error-detected parts.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between APP sensor harness connector and ECM harness connector.

   APP sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E40	2	E10	151	Existed

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

GO TO 5.

NO

Repair open circuit, short to ground or short to power in harness or connectors.

1. Check the continuity between APP sensor harness connector and ECM harness connector.

   APP sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E40	3	E10	150	Existed

2. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

GO TO 6.

NO

Repair open circuit, short to ground or short to power in harness or connectors.

Check APP sensor. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

INSPECTION END

NO

Replace accelerator pedal assembly. Refer to Removal and Installation .