For 1990-2009 cars only
Circuit Description
This diagnostic indicates that the PCM detects an internal microprocessor integrity fault.
Conditions for Running the DTC
The PCM is powered-up
Conditions for Setting the DTC
The PCM detects an internal microprocessor integrity fault.
Action Taken When the DTC Sets
| • | The PCM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails. |
| • | The PCM records the operating conditions at the time the diagnostic fails. The PCM stores this information in the Freeze Frame and the Failure Records. |
Conditions for Clearing the MIL/DTC
| • | The PCM turns the MIL OFF after 3 consecutive drive trips that the diagnostic runs and does not fail |
| • | A last test failed (current DTC) clears when the diagnostic runs and does not fail |
| • | 40 consecutive warm-up cycles have occurred |
| A History DTC clears after 40 consecutive warm-up cycles, if this or any other emission related diagnostic does not report any failures. |
| • | The PCM battery voltage is interrupted |
| • | Using a scan tool |
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Powertrain On-Board Diagnostic (OBD) System Check? | -- | ||
|
Important: Program the replacement PCM. Replace the PCM. Refer to Powertrain Control Module Replacement . Is the action complete? | -- | -- | ||
3 |
Does the scan tool indicate that this test ran and passed? | -- | ||
4 | Select the Capture Info option and the Review Info option using the scan tool. Does the scan tool display any DTCs that you have not diagnosed? | -- | Go to applicable DTC table | System OK |
