P0633

P0633-INVALID SKIM KEY

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

- When Monitored:
With the ignition on.

- Set Condition:
The Powertrain Control Module (PCM) receives and invalid secret key message from the Radio Frequency Module (RF Hub).





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

1. CHECK FOR ACTIVE DTC
1. Turn the ignition on, engine off.
2. With the scan tool, select View DTCs in the PCM.

Is the status Active for this DTC?

Yes

- Go To 2

No

- Perform the INTERMITTENT DTC diagnostic procedure. . Intermittent Condition Test

2. CHECK VIN STORED IN THE PCM
1. With the scan tool, read the VIN code stored in the PCM and compare it to the vehicle.

Does the PCM have the correct VIN stored?

Yes

- Go To 3

No

- Program the correct VIN number into the PCM.
- Perform the PCM VERIFICATION TEST - 2.0L DIESEL. . Powertrain Verification Test

3. PROGRAMMING SKIM SECRET KEY CODE INTO THE PCM
1. With a scan tool, erase DTCs.
2. Using the scan tool, program the secret key information into the PCM.
3. 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.

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

Did the DTC return?

Yes

- Go To 4

No

- The secret key information has been successfully programmed into the PCM. Test complete.
- Perform the PCM VERIFICATION TEST - 2.0L DIESEL. . Powertrain Verification Test

4. POWERTRAIN CONTROL MODULE
1. Look for any chafed, pierced, pinched, or partially broken wires.
2. Look for broken, bent, pushed out or corroded terminals.
3. Perform any Technical Service Bulletins that may apply.

Were any problems found?

Yes

- Repair as necessary.
- Perform the PCM VERIFICATION TEST - 2.0L DIESEL. . Powertrain Verification Test

No

- Replace the Powertrain Control Module.
- Perform the PCM VERIFICATION TEST - 2.0L DIESEL. . Powertrain Verification Test