P0601

Diagnostic Chart:

CIRCUIT DESCRIPTION

The PCM EEPROM contains data which is essential to running the engine and transmission. The PCM continuously checks the integrity of this data.


CONDITIONS FOR CLEARING THE MIL/DTC

^ The PCM will turn the MIL OFF after three consecutive drive trips that the diagnostic runs and does not fail.

^ If no failures are reported by this or any other non-emission related diagnostic.

^ A last test failed (Current DTC) will clear when the diagnostic runs and does not fail.

^ PCM battery voltage is interrupted.

^ Using a Scan tool.


ACTION TAKEN WHEN THE DTC SETS

^ The PCM will illuminate the Malfunction Indicator Lamp (MIL) when the diagnostic runs and fails.

^ The PCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Freeze Frame and/or Failure Records.

^ The injector will be disabled for the entire ignition cycle.

CONDITIONS FOR CLEARING THE MIL/DTC

^ The PCM will turn the MIL OFF after three consecutive drive trips that the diagnostic runs and does not fail.

^ If no failures are reported by this or any other non-emission related diagnostic.

^ A last test failed (Current DTC) will clear when the diagnostic runs and does not fail.

^ PCM battery voltage is interrupted.

^ Using a Scan tool.


DIAGNOSTIC AIDS

Replace the PCM even if this DTC exists only in history.

For intermittents, refer to Symptoms. Testing and Inspection


TEST DESCRIPTION

Number(s) below refer to step numbers on the diagnostic table.

2. Replace the PCM even if this DTC exists only in history.