SKREEM/SKIM–SERIAL LINK EXTERNAL FAULT
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
At ignition on, after ignition on during any rolling code handshake that occurs with the PCM due to a SKREEM/SKIM reset, or during SECRET KEY transfers to the PCM.
- Set Condition:
If the SKREEM/SKIM fails to receive the PCI BUS message transmission acknowledgement from the PCM after 3 transmit attempts.
| Possible Causes |
| WIRE HARNESS FAILURE |
| SKREEM/SKIM |
| PCM |
Diagnostic Test
1.VERIFY THAT THE DTC IS ACTIVENOTE: Verify that the PCM has good power and ground connections before continuing.
Did this DTC reset?
Yes
- Go To 2
No
- Perform the Intermittent Condition diagnostic procedure in this Section.
2.INSPECT RELATED WIRING FOR CONDITION CAUSING THE FAULT
NOTE: Visually inspect the related wiring harness and PCI Bus circuits for chafed, pierced, pinched, and partially broken wires.
NOTE: Visually inspect the related wiring harness connectors for broken, bent, pushed out, and corroded terminals.
NOTE: Refer to any Technical Service Bulletins (TSB) that may apply.
Were any problems found?
Yes
- Repair as necessary.
- Perform SKIS VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STANDARD PROCEDURE).
No
- Go To 3
3.VERIFY THAT THE DTC IS STILL ACTIVE
NOTE: Obtain the SKIM PIN before proceeding.
Did this DTC reset?
Yes
- Replace and program the PCM in accordance with the Service Information.
- Perform SKIS VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STANDARD PROCEDURE).
No
- Test complete, the conditions that set this DTC are not present at this time.