SFI SYSTEM, Diagnostic DTC:P0604, P0606, P060A, P060D, P0657

DTC Code DTC Name
P0604 Random Access Memory (RAM)
P0606 ECM / PCM Processor
P060A Internal Control Module Monitoring Processor Performance
P060D Internal Control Module Accelerator Pedal Position Performance
P0657 Actuator Supply Voltage Circuit / Open

DESCRIPTION

The ECM continuously monitors its internal memory status, internal circuits, and output signals to the throttle actuator. This self-check ensures that the ECM is functioning properly. If any malfunction is detected, the ECM stores appropriate DTCs and illuminates the MIL.

DTC No. DTC Detection Condition Trouble Area

P0604

P060A

P060D

P0657

ECM internal error (1 trip detection logic). ECM
P0606 ECM internal error (1 or 3 trip detection logic).

CAUTION / NOTICE / HINT

Note

Perform idle learning after replacing the ECM Click here.

Tech Tips

Read freeze frame data using the GTS. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO ECM INTERNAL ERROR DTC)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear DTC Click here.

    5. Turn the ignition switch off and wait for at least 30 seconds.

    6. Turn the ignition switch to ON.

    7. Turn the GTS on.

    8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    9. Read pending DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0604. P0606. P060A. P060D and/or P0657 is output B

    A
    B