Diagnostic Procedures
- Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM. After performing OBD system check, go to next step.
- Operate vehicle within conditions required to set DTC. Using scan tool, select DTC, SPECIFIC function. If scan tool indicates that this DTC failed this ignition, go to next step. If scan tool does not indicate that this DTC failed this ignition, see DIAGNOSTIC AIDS .
- Using scan tool, monitor 24X crank sensor and CAM signal. If both the 24X signal and/or CAM signal is present, go to next step. If 24X crank sensor signal is present, see DTC P0336: CRANKSHAFT POSITION SENSOR CIRCUIT PERFORMANCE .
- Turn ignition on, engine off. Read and record FAILURE RECORDS data for DTC P0327. Operate vehicle within conditions noted in FAILURE RECORDS data. Using scan tool, read SPECIFIC DTC. If scan tool indicates that this DTC failed this ignition, go to next step. If scan tool does not indicate that this DTC failed this ignition, see DIAGNOSTIC AIDS .
- Turn ignition off. Disconnect PCM and KS harness connectors. Check KS signal circuit between PCM and KS harness connector for open, short to voltage or short to ground. Repair as necessary. After repairs, go to step 8. If circuit is okay, go to next step.
- Check KS signal circuit for poor terminal connection at KS. Repair as necessary. After repairs, go to step 8. If connection is okay, go to next step.
- Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to next step.
- Read and record FAILURE RECORDS data for DTC P0327. Operate vehicle within conditions noted in FAILURE RECORDS data. Using scan tool, read SPECIFIC DTC. If scan tool indicates that this DTC failed this ignition, repeat step 2. If scan tool does not indicate that this DTC failed this ignition, system is okay.