PCM Status Failure ,Rolling Code Failure, or Serial Link External Fault
- Ensure power and ground circuits for PCM are operational. Using scan tool, erase any SKIM DTCs. Turn ignition off. Wait 10 seconds and turn ignition on. Recheck for SKIM DTCs. If scan tool displays any SKIM DTCs that were erased, go to next step. If scan tool does not display any SKIM DTCs that were erased, go to step 4.
- Turn ignition off. Check SKIM module connector and wiring for faulty connections, broken insulation or damaged terminals. Check for symptom related technical service bulletins. If no problems were found, go to next step. If any problems were found, repair as necessary. Perform SENTRY KEY IMMOBILIZER SYSTEM VERIFICATION TEST under VERIFICATION TESTS.
- Replace SKIM. See SENTRY KEY IMMOBILIZER MODULE under REMOVAL & INSTALLATION. Using scan tool, erase SKIM DTCs. Turn ignition off and on, leaving key in on position for a minimum of 30 seconds for each cycle. Drive vehicle. Read SKIM DTCs again. If this DTC does not set, test is complete. If this DTC is set, replace Powertrain Control Module (PCM). See POWERTRAIN CONTROL MODULE VERIFICATION TEST under REMOVAL & INSTALLATION. Perform SENTRY KEY IMMOBILIZER SYSTEM VERIFICATION TEST under VERIFICATION TESTS.
- Turn ignition off. Check SKIM module connector and wiring for faulty connections, broken insulation or damaged terminals. Check for symptom related technical service bulletins. If no problems were found, test is complete. If any problems were found, repair as necessary. Perform SENTRY KEY IMMOBILIZER SYSTEM VERIFICATION TEST under VERIFICATION TESTS.