Monitor DTC Status
- Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode.
- Press F5(INFO) to select DTC information from the DTCs menu.
- Confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
- Read "DTC Status" parameter.
- Is parameter displayed "History (Not Present) fault"?NOTE:
- History (Not Present) fault: DTC occurred but has been cleared.
- Present fault: DTC is occurring at present time.
YES
- Fault is intermittent caused by poor contact in the sensor's and/or the PCM's connector, which was repaired but PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Using a scan tool, check PCM software version and upgrade as necessary. If version is the newest one, check PCM for contamination, deterioration, or damage. Substitute with a known-good PCM and check for proper operation. If the problem is corrected, replace PCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure