Description
This diagnostic applies to internal microprocessor integrity conditions within the powertrain control module (PCM). This diagnostic also addresses if the PCM is not programmed.
DTC Descriptors
This diagnostic procedure supports the following DTCs:
| • | DTC P0601 Control Module Read Only Memory (ROM) |
| • | DTC P0602 Control Module Not Programmed |
| • | DTC P0603 Control Module Long Term Memory Reset |
| • | DTC P0604 Control Module Random Access Memory (RAM) |
| • | DTC P0606 Control Module Internal Performance |
| • | DTC P0607 Control Module Performance |
| • | DTC P1681 Control Module Throttle Position (TP) System Performance |
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
Is DTC P0602 set? | Go to Step 3 | Go to Step 5 | |
3 | Program the powertrain control module (PCM). Refer to Service Programming System (SPS) . Does DTC P0602 reset? | Go to Step 4 | Go to Step 6 |
4 |
Does DTC P0602 reset? | Go to Step 5 | Go to Step 6 |
5 | Replace the PCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 6 | -- |
6 | Start the engine. Did the DTC fail this ignition? | Go to Step 2 | Go to Step 7 |
7 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? | System OK |
