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Diagnostic Test

VERIFY 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 active DTCs.
  Does the scan tool display: U0155-LOST COMMUNICATION WITH CLUSTER/CCN?
  
  Yes
  - Refer to U0155-00 diagnostic procedure.
  No
  - Refer to Diagnosis and Testing . and perform the Stored Lost Communication DTCs diagnostic procedure.