Diagnostic Test

VERIFY DTC IS ACTIVE 

1. Turn the ignition on.
2. With the scan tool, read active DTCs.

   Is this DTC active?

   Yes 

   • Refer to the DTC INDEX - 1500 article and perform the U0146-Lost Communication with Central Gateway diagnostic procedure.

   No 

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