SKREEM/SKIM-Rolling Code Failure

SKREEM/SKIM-ROLLING CODE FAILURE

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
At ignition on, after ignition on during any rolling code handshake that occurs with the PCM due to a SKREEM/SKIM or PCM reset.

- Set Condition:
When a PCM STATUS message with a Valid Key status is not received by the SKREEM/SKIM within 3.5 seconds of transmitting the last Valid Key Code message to the PCM.





Diagnostic Test

1. VERIFY THAT THE DTC IS ACTIVE
Turn the ignition on.
With the scan tool, erase the SKREEM/SKIM DTCs.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on and wait 2 minutes.
With the scan tool, read the SKREEM/SKIM DTCs.
Did this DTC reset?

Yes

- Go To 2

No

- Perform the Intermittent Condition diagnostic procedure.

2. VERIFY THAT THE PCM IS PROGRAMMED WITH THE CORRECT VIN
Display and record the VIN programmed in the PCM as follows:
- With the scan tool, select ECU View, select PCM, select More Options, and select ECU Details.

NOTE: Make sure that a VIN is programmed in the PCM. If the VIN does not display, attempt to program the PCM with the correct VIN before continuing.

Is the PCM programmed with the correct VIN?

Yes

- Go To 3

No

- Using the scan tool, perform PCM Replaced to update the VIN in the PCM.
- Perform SKIS VERIFICATION TEST. Vehicle Theft Security Verification Tests.

3. VERIFY THAT THE DTC IS STILL ACTIVE
Turn the ignition off.
Replace and program the SKREEM/SKIM.
Turn the ignition on.
With the scan tool, erase all PCM and SKREEM/SKIM DTCs.
Perform 5 ignition key cycles leaving the ignition key on for 90 seconds per cycle.
With the scan tool, check for SKREEM/SKIM DTCs.
Did this DTC reset?

Yes

- Replace and program the PCM.
- Perform SKIS VERIFICATION TEST. Vehicle Theft Security Verification Tests.

No

- The repair is complete.
- Perform SKIS VERIFICATION TEST. Vehicle Theft Security Verification Tests.