B2229

B2229 - SKREEM Internal, SKIM Immobilizer

For a complete wiring diagram, refer to.

Theory of Operation

• When Monitored: With the ignition on.

• Set Condition: When the Antenna diagnostic test fails.






• Always perform the WIN Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to => Non-DTC Based Diagnostics. Wireless Ignition Node Pre-Diagnostic Procedure

Test Step 1 - Verify that the DTC is Active

• Review the repair history of the vehicle.

• Make sure that the vehicle has the correct PCM and WIN installed by verifying the part numbers.

• With the scan tool, ensure that the PCM and WIN are programmed correctly. Compare the PCM VIN to the WIN VIN and ensure the two VINs match.

• Turn the ignition on.

• With the scan tool, record and erase the DTCs.

• Perform three ignition cycles, leaving the ignition switch on for a minimum of one minute per cycle.

• With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

• Go to Test Step 2

No

• Perform the WIN Verification Test. Refer to => Non-DTC Based Diagnostics. Wireless Ignition Node Verification Test

Test Step 2 - Engine Does Not Crank

• When diagnosing any WIN concern, all FOBIKs must be present.

• If this vehicle does not crank, use the table below to determine if the key is functional or not. With the scan tool under Data Display, Bussed Outputs, put the key in each position and check the Ignition Status. Then with the key in the Run position, check Valid Skim Key and SCREEM Status reported by the WIN (or WCM). Compare all six readings with the Good Key column. If the engine does crank, answer Yes to the question below.






Does the key (FOBIK) pass all six comparisons that are in the Good Key column?

Yes

• Replace the Wireless Ignition Node (WIN).If this vehicle is equipped with a Shaft Lock Module, it must also be replaced.When replacing the WIN and the Shaft Lock Module, the Win MUST be programmed before the Shaft Lock Module is programmed.

• Perform the WIN Verification Test. Refer to => Non-DTC Based Diagnostics. Wireless Ignition Node Verification Test

No

• Replace the key (FOBIK) and program using the scan tool.

• Perform the WIN Verification Test. Refer to => Non-DTC Based Diagnostics. Wireless Ignition Node Verification Test

• Technicians must use the scan tool to perform the WIN programming procedure after a module replacement.