Engine

U0168 - Lost Communication with Vehicle Security Control Module WIN

For wiring diagrams, refer to.

• When Monitored: With the ignition on, battery voltage between 9 and 16 volts, and engine run time greater than 3 seconds.

• Set Condition: The PCM doesn't receive a bus message from the vehicle security control module (WIN) for a specific amount of time.






• Always perform the pre-diagnostic troubleshooting procedure before proceeding. Refer to => Non-DTC Based Diagnostics. Pre-Diagnostic Troubleshooting Procedure

Test Step 1 - Active DTC

• 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.

• 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 status active for this DTC?

Yes

• Refer to => Non-DTC Based Diagnostics.

No

• Refer to the checking for an intermittent DTC diagnostic procedure. Refer to => Non-DTC Based Diagnostics. Checking for an Intermittent DTC