Diagnostic Test

CHECK FOR ACTIVE DTCS 

1. With the scan tool, read the active WIN DTCs.
2. Cycle the ignition switch from off to on at least 3 times, leaving the ignition on for a minimum of one minute per cycle.
3. With the scan tool, read the active WIN DTCs.

   Does the scan tool display: U0001-CAN C BUS as active?

   Yes 

   • Refer to DIAGNOSIS AND TESTING and perform the U0001-CAN C BUS diagnostic procedure.

   No 

   • Refer to DIAGNOSIS AND TESTING and perform the STORED LOST COMMUNICATION DTCs diagnostic procedure.