P0633

P0633-SKIM SECRET KEY NOT STORED IN PCM

For a complete wiring diagram, refer to the wiring information Diagrams.

- 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.

Possible Causes:

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure

PROGRAMMING SECRET KEY INTO THE POWERTRAIN CONTROL MODULE (PCM)

1. Ignition on, engine not running.
2. With the scan tool, erase DTCs.
3. Using the scan tool, program the Secret Key information into the Powertrain Control Module (PCM) using the MODULE PROGRAMMING procedure.
4. Start the engine.

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

5. Allow the engine to reach normal operating temperature.
6. With a scan tool, select View DTCs.

Does the DTC reset?

Yes

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

No

- The Secret Key information has been successfully programmed into the PCM. Test is complete.
- Perform the PCM VERIFICATION TEST. Powertrain Verification Test.