Diagnostic Test

VERIFY THE DTC IS ACTIVE 

1. Turn the ignition on.
2. With the scan tool, read DTCs and record on vehicle work order.
3. With the scan tool, erase DTCs.
4. Cycle the ignition from off to on.
5. With the scan tool, read the DTCs.

   Is this DTC active at this time?

   Yes 

   • Perform the U0001-87-CAN INTERIOR BUS -MISSING MESSAGE diagnostic procedure. Refer to  U0001-87-CAN C BUS - NO SIGNAL  .

   No 

   • Perform the Stored Lost Communication DTCs diagnostic procedure.Refer to  STORED LOST COMMUNICATION DTCS  .