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TEST ACTION APPLICABILITY 4 Ignition on, engine not running. t, read Automatic Temp Control DTCs. Are there any ATC DTCs present? All Yes → Refer to the Heating and A/C category and perform the appropri- ate symptom. No → Go To 5 5 Turn the ignition off to the lock position. All Yes → Replace the Automatic Temp Control per the service information. No → Repair the CAN C Bus (+) or the CAN C Bus (-) circuit for an open. 6 NOTE: If vehicle is equipped with Air Conditioning diagnose the ATC t, read Instrument Cluster or Automatic Temp Control DTCs. Are there any Instrument Cluster DTCs present? All Yes → Refer to the INSTRUMENT CLUSTER category and perform the appropriate symptom. No → Go To 7 7 Turn the ignition off to the lock position. All Yes → Replace the Instrument Cluster per the service information. No → Repair the CAN C Bus (+) or the CAN C Bus (-) circuit for an open. 73 TRANSMISSION - NAG1 IC/ATC CAN MESSAGE MISSING — Continued |