P0633

P0633-SKIM SECRET KEY NOT STORED IN PCM



- When Monitored:
Ignition on.

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





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.Pre-Diagnostic Troubleshooting Procedure
SECRET KEY INFORMATION NOT PROGRAMMED IN THE POWERTRAIN CONTROL MODULE (PCM)
1. Turn the ignition on.
2. Using the scan tool, program the Secret Key information into the Powertrain Control Module (PCM) using the PCM Replaced function in the WCM.
3. Start the engine and allow it to reach normal operating temperature.

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

4. With a scan tool, select View DTCs.

Is the DTC Active at this time?

Yes

- Replace and program the Powertrain Control Module (PCM).
- Perform the PCM Verification Test. PCM Verification Test

No

- Test complete.
- Perform the PCM Verification Test. PCM Verification Test