P0633

P0633-SKIM SECRET KEY NOT STORED IN PCM

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Ignition on.

- Set Condition:
The Secret Key information has not been programmed into the Powertrain Control Module (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.

Diagnostic Test
PROGRAMMING SECRET KEY INTO THE PCM
1. Ignition on, engine not running.
2. With the scan tool, erase DTCs.
3. Cycle the ignition key two times.
4. Attempt to start the engine.

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

5. With the scan tool, select View DTCs.

Does the DTC reset?

Yes

- Replace and program the Powertrain Control Module. .
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

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