P0633

P0633-SKIM SECRET KEY NOT STORED IN PCM

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 Secret Key information into the PCM using the PCM replaced function under the WCM menu.
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.

Q: Does the DTC reset?

YES: Replace and program the Powertrain Control Module. Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test
NO: The SKIM KEY information has been successfully programmed into the PCM. Test is complete. Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test