P0606

CIRCUIT DESCRIPTION
The Powertrain Control Module (PCM) has the capability of diagnosing a malfunction within the controller. If the PCM detects a malfunction within the controller, DTC P0606 will set.

CONDITIONS FOR RUNNING THE DTC
^ DTCs P0601 or P0604 are not set.
^ The ignition is ON.

CONDITIONS FOR SETTING THE DTC
The PCM detects an internal performance problem within the controller.

ACTION TAKEN WHEN THE DTC SETS
^ The control module illuminates the Malfunction Indicator Lamp (MIL) when the diagnostic runs and fails.
^ The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records.

CONDITIONS FOR CLEARING THE MIL/DTC
^ The control module turns OFF the Malfunction Indicator Lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
^ A current DTC "Last Test Failed" clears when the diagnostic runs and passes.
^ A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
^ Use a scan tool in order to clear the MIL and the DTC.

TEST DESCRIPTION

Steps 1-2:

The number below refers to the step number on the diagnostic table.
2. This DTC indicates an internal PCM problem.