Diagnostic Test

CHECK IF THE DTC IS ACTIVE
NOTE:
Make sure the battery is fully charged before proceeding.
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Refer to the DTC INDEX - 500E and perform the U1724-87-Lost Communication with PAM diagnostic procedure.
  No
  - Refer to DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.