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DTC P0606: ECM/PCM Processor Malfunction

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
  1. Turn the ignition switch to ON (II).
  2. Reset the ECM/PCM with the HDS.
  3. Turn the ignition switch to LOCK (0).
  4. Start the engine, and let it idle for 40 seconds.
  5. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC P0606 indicated? 

    YES  -Go to step 6.

    NO  -Intermittent failure, the system is OK at this time.

  6. Update the ECM/PCM if it does not have the latest software (see ECM/PCM UPDATE  ), or substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).
  7. Turn the ignition switch to LOCK (0).
  8. Start the engine, and let it idle for 40 seconds.
  9. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC P0606 indicated? 

    YES  -If the ECM/PCM was updated, substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ), then go to step  7. If the ECM/PCM was substituted, go to step  1.

    NO  -If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see ECM/PCM REPLACEMENT  ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC'S TROUBLESHOOTING .

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