P0633

P0633-SKIM KEY NOT PROGRAMMED IN PCM

For a complete wiring diagram refer to: Electrical Diagrams

When Monitored
Ignition on.

Set Condition
The SKIM Key information has not been programmed into the PCM. One Trip Fault. Three good trips to turn off the MIL.

Possible Causes
- PROGRAMMING SKIM KEY INTO THE PCM
- PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test
1. PROGRAMMING SKIM KEY INTO THE PCM





Ignition on, engine not running.
With a scan tool, erase DTCs.
Using the scan tool, program the SKIM Key information into the PCM. Start the engine.

NOTE: If the engine will not start, crank the engine over for 15 seconds. Crank at least 2 times with the ignition switch returning to the off position each time.

Allow the engine to reach normal operating temperature.
With the scan tool, read DTCs.

Does the DTC reset?
Yes >> Replace and program the Powertrain Control Module per Service Information.
Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test
No >> The SKIM KEY information has been successfully programmed into the PCM. Test is complete.
Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test