Wireless Control Module (WCM)

B2205-ORIGINAL VIN MISSING/MISMATCH





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

- When Monitored:
At ignition on or after ignition on during any rolling code handshake that occurs with the Powertrain Control Module (PCM).

- Set Condition:
When a PCM STATUS message with a Valid Key status is not received by the Wireless Control Module (WCM) within 3.5 seconds of transmitting the last Valid Key Code message to the PCM.





1. DETERMINING IF DIAGNOSTIC TROUBLE CODE (DTC) IS CURRENT
1. Using the scan tool, erase WCM DTCs.
2. Turn the ignition off.
3. Wait 10 seconds.
4. Turn the ignition on and wait two minutes.
5. Using the scan tool, read WCM DTCs.

Does the scan tool display the DTC that was previously erased?

Yes

- Go To 2

No

- Go To 4

2. VERIFYING THE PCM VIN
1. Turn the ignition on.
2. Using the scan tool, select Engine system from the main menu.
3. Display and record the Vehicle Identification Number.

NOTE: Make sure that a VIN has been programmed into the PCM. If a VIN is not displayed, attempt to program the PCM with the correct VIN before continuing.

Does the VIN recorded from the PCM match the VIN of the vehicle?

Yes

- Go To 3

No

- Perform the PCM replaced routine to update the VIN in the PCM.
- Perform the WIRELESS CONTROL MODULE (WCM) VERIFICATION TEST. Wireless Control Module (WCM) Verification Test

3. REPLACE WCM AND CHECK DTCS
1. Turn the ignition off.
2. Replace and program the Wireless Control Module.

NOTE: If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the SKREEM.

3. Turn the ignition on.
4. Using the scan tool, display and clear all PCM and WCM DTCs.
5. Perform five ignition key cycles leaving the ignition key on for 90 seconds per cycle.
6. With the scan tool, check for WCM DTCs.

Does the scan tool display the same DTC?

Yes

- Replace and program the Powertrain Control Module.
- Perform the WIRELESS CONTROL MODULE (WCM) VERIFICATION TEST. Wireless Control Module (WCM) Verification Test

No

- The repair is complete.
- Perform the WIRELESS CONTROL MODULE (WCM) VERIFICATION TEST. Wireless Control Module (WCM) Verification Test

4. INTERMITTENT
1. Turn the ignition off.

NOTE: Check for the following conditions:
- Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
- Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
- Search for any Technical Service Bulletins (TSB) that may apply.

Were any problems found?

Yes

- Repair wiring harness/connectors as necessary.
- Perform the WIRELESS CONTROL MODULE (WCM) VERIFICATION TEST. Wireless Control Module (WCM) Verification Test

No

- Test Complete.