Diagnosis Procedure

1. Turn ignition switch ON.
2. Connect CONSULT and check for the following other existing "ENGINE" diagnostic trouble codes:
   • P2122-00
   • P2123-00
   • P2127-00
   • P2128-00

Are any of the above applicable DTCs detected?

YES

Perform diagnosis of applicable DTC. Refer to DTC Index .

NO

GO TO 2 .

1. Turn ignition switch OFF.
2. Disconnect the accelerator pedal position sensor from engine harness connector.
3. Inspect the accelerator pedal position sensor connector pins for the following:
   • Loose connector
   • Corroded pins
   • Bent or broken pins
   • Pushed back or expanded pins
   • Moisture in or on the connector
   • Missing or damaged connector seals
   • Dirt or debris on or in the connector pins
   • Connector shell broken
   • Wire insulation damage
   • Damaged connector locking tab

Is the inspection result normal?

YES

GO TO 3 .

NO

Repair or replace error-detected parts.

1. Turn ignition switch ON.
2. Wait 30 seconds.
3. Connect CONSULT and check for current "ENGINE" diagnostic trouble codes.

Are both P2122-00 and P2127-00 DTCs current?

YES

GO TO 4 .

NO

• P2122-00 is not current. Refer to DTC Description .
• P2127-00 is not current. Refer to DTC Description .

1. Turn ignition switch OFF.
2. Disconnect the accelerator pedal position sensor.
3. Turn ignition switch ON.
4. Check the voltage between accelerator pedal position sensor supply voltage and return circuit terminals.

   Accelerator Pedal Position Sensor			Voltage (V) (Approx.)
   Connector	Terminal (+)	Terminal (-)
   E20	2	4	5

Is the inspection result normal?

YES

GO TO 5 .

NO

Low sensor supply voltage has been detected. Refer to DTC Description .

1. Turn ignition switch OFF.
2. Disconnect the accelerator pedal position sensor.
3. Turn ignition switch ON.
4. Check the voltage between accelerator pedal position sensor supply voltage and return circuit terminals.

   Accelerator pedal position sensor			Voltage (V) (Approx.)
   Connector	Terminal (+)	Terminal (-)
   E20	1	5	5

Is the inspection result normal?

YES

GO TO 6 .

NO

Low sensor supply voltage has been detected. Refer to DTC Description .

1. Turn ignition switch OFF.
2. Reconnect the accelerator pedal position sensor connector.
3. Turn ignition switch ON.
4. Wait 30 seconds.
5. Connect CONSULT and check for current "ENGINE" diagnostic trouble codes.

Did P2121-00 DTC become "past"?

YES

The removal and installation of the connector corrected the issue.

NO

GO TO 7 .

1. Turn ignition switch OFF.
2. Disconnect ECM from engine harness connector.
3. Inspect the ECM connector for the following:
   • Loose connector
   • Corroded pins
   • Bent or broken pins
   • Pushed back or expanded pins
   • Moisture in or on the connector
   • Missing or damaged connector seals
   • Dirt or debris on or in the connector pins
   • Connector shell broken
   • Wire insulation damage
   • Damaged connector locking tab

Is the inspection result normal?

YES

GO TO 8 .

NO

Repair or replace error-detected parts.

1. Disconnect the accelerator pedal position sensor.
2. Check the continuity between accelerator pedal position sensor 1 signal and all other circuits at ECM harness connector.

Is the inspection result normal?

YES

GO TO 9 .

NO

Repair short circuit in harness connector.

Check the continuity between Accelerator pedal position sensor 2 signal and all other circuits at ECM harness connector.

Is the inspection result normal?

YES

• A damaged accelerator pedal has been detected. Replace the Accelerator pedal position sensor. Refer to Removal and Installation .
• GO TO 10 .

NO

Repair short circuit in harness connector.

1. Turn ignition switch OFF.
2. Connect all harness connectors.
3. Turn ignition switch ON.
4. Using CONSULT, select "ENGINE" and erase DTCs.
5. Operate the engine within the "Conditions for Clearing the DTC".

Is P2121-00 DTC current?

YES

Diagnosis procedure needs to be repeated. Refer to DTC Description .

NO

Repair complete.