Diagnosis Procedure

1. Turn ignition switch ON.
2. Connect CONSULT and check for other existing "ENGINE" diagnostic trouble codes.

If DTC P06A4-00 or P06A5-00 is present, perform the confirmation procedure (trouble diagnosis) for these other DTCs first.

Is applicable DTC detected?

YES

Perform diagnosis of applicable DTC. Refer to DTC Index .

NO

GO TO 2 .

Check for DTC P2122-00 being active on the CONSULT screen.

Is applicable DTC active?

YES

GO TO 3 .

NO

Refer to Intermittent Incident .

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 4 .

NO

Repair or replace error-detected parts.

1. Turn ignition switch ON.
2. 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

GO TO 7 .

1. Turn ignition switch OFF.
2. Connect a jumper wire between accelerator pedal position sensor connector 5V supply terminal 2 and signal circuit terminal 3.
3. Turn key ON and wait 30 seconds.
4. Connect CONSULT and check for current "ENGINE" diagnostic trouble codes.

Did P2123-00 DTC become active and P2122-00 DTC become inactive?

YES

GO TO 6 .

NO

GO TO 7 .

1. Turn ignition switch OFF.
2. Disconnect the jumper wire.
3. Reconnect the accelerator pedal position sensor connector.
4. Key ON. Connect CONSULT and check for current "ENGINE" diagnostic trouble codes.

Did P2122-00 DTC become active?

YES

Replace the accelerator pedal position sensor. Refer to Removal and Installation .

NO

The removal and installation of the connector corrected the issue.

1. Turn ignition switch OFF.
2. Disconnect ECM from engine harness connector.
3. Inspect the ECM 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 8 .

NO

Repair or replace error-detected parts.

Check the continuity between accelerator pedal position sensor harness connector and ECM harness connector.

Is the inspection result normal?

YES

GO TO 9 .

NO

Repair open circuit in harness or connectors.

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

Is the inspection result normal?

YES

GO TO 10 .

NO

Repair short circuit in harness connector.

Check the continuity between accelerator pedal position sensor harness connector and ground.

Is the inspection result normal?

YES

GO TO 11 .

NO

Repair short circuit in harness or connectors.

1. Connect all components in the correct positions.
2. Turn ignition switch ON.
3. Connect CONSULT and check for inactive "ENGINE" diagnostic trouble codes.

Is P2122-00 DTC inactive?

YES

The removal and installation of the connector corrected the issue.

NO

Replace the ECM. Refer to Removal and Installation .