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
Important: The DTCs listed below, are not applicable to all vehicles.
| • | 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 P0605 Control Module Programming Read Only Memory |
| • | DTC P0606 Control Module Internal Performance |
| • | DTC P0607 Control Module Performance |
| • | DTC P1600 Long Term Memory Reset |
| • | DTC P1621 Long Term Memory Performance |
| • | DTC P1627 Analog to Digital Performance |
| • | DTC P1680 Accelerator Pedal Position (APP) Performance |
| • | DTC P1681 Throttle Position (TP) System Performance |
| • | DTC P1683 Ignition Off Timer Performance |
| • | DTC P2610 Ignition Off Timer 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-Engine Controls? | 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) in Programming. 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 Powertrain Control Module Replacement . Did you complete the replacement? | Go to Step 6 | -- |
6 |
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 |
