Diagnostic Test

VERIFY 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 the DTCs.
  Is the DTC active at this time?
  
  Yes
  - Refer to U1701-87-LOST COMMUNICATION WITH PCM and perform the U1701-87-Lost Communication with PCM diagnostic procedure.
  No
  - Refer to DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.