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

DTC Code DTC Name
P0604 Internal Control Module Random Access Memory (RAM) Error
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 own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. This self-check insures that the ECM is functioning properly. If any malfunction is detected, the ECM sets the appropriate DTC and illuminates the MIL.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0604

Internal Control Module Random Access Memory (RAM) Error

ECM internal error (1 trip detection logic).

ECM

Comes on

DTC stored

P0606

ECM / PCM Processor

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

ECM

Comes on

DTC stored

P060A

Internal Control Module Monitoring Processor Performance

ECM internal error (1 trip detection logic).

ECM

Comes on

DTC stored

P060D

Internal Control Module Accelerator Pedal Position Performance

ECM internal error (1 trip detection logic).

ECM

Comes on

DTC stored

P0657

Actuator Supply Voltage Circuit / Open

ECM internal error (1 trip detection logic).

ECM

Comes on

DTC stored

CAUTION / NOTICE / HINT

Note:

After replacing the ECM, perform idle learning.

Click here

Tip:

Read freeze frame data using the GTS. Freeze frame data records the engine condition 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. READ OUTPUT DTC (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 the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

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

    6. Turn the ignition switch to ON.

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

    8. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes

      Result

      Result

      Proceed to

      DTC P0604, P0606, P060A, P060D and/or P0657 is output

      A

      DTCs are not output

      B
    A

    REPLACE ECM

    Click hereClick here

    B

    CHECK FOR INTERMITTENT PROBLEMS

    Click here