Gas

U0168-LOST COMMUNICATION WITH VEHICLE SECURITY CONTROL MODULE (SKREEM-WCM)





For a complete wiring diagram refer to Diagrams/Electrical.


- When Monitored:
- With the ignition on
- Battery voltage between 10 and 16 volts
- IOD fuse installed
- Set Condition:

If the PCM fails to receive bus messages from the SKREEM (WCM) for approximately 500 ms.







Diagnostic Test


1. VERIFY DTC IS ACTIVE

NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.


NOTE: Check the IOD fuse before continuing. If the fuse is open, check the circuit for a short to ground.

Turn the ignition on.

With a scan tool, select View DTCs.

Is the DTC Active at this time?

Yes

- Refer to Communications for diagnostic procedures and for further possible causes.

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition