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Symptom: NO COMMUNICATION WITH IC (ACTIVE) When Monitored and Set Condition: NO COMMUNICATION WITH IC (ACTIVE) When Monitored: With the ignition on. Set Condition: This DTC will set if the Automatic Temperature Control (ATC) fails to receive all messages from the Instrument Cluster. POSSIBLE CAUSES CAN C BUS CIRCUIT(S) SHORTED OR OPEN INSTRUMENT CLUSTER DTC(S) PRESENT INSTRUMENT CLUSTER’S POWER/GROUND CIRCUIT(S) SHORTED OR OPEN INSTRUMENT CLUSTER CAN C BUS (+)/CAN C BUS (-) CIRCUIT(S) OPEN TO INSTRUMENT CLUSTER AUTOMATIC TEMPERATURE CONTROL (ATC) CAN C BUS (+)/CAN C BUS (-) CIRCUIT(S) OPEN TO AUTOMATIC TEMPERATURE CONTROL TEST ACTION APPLICABILITY 1 Turn the ignition on. t, read Automatic Temperature Control DTCs. Does the DRBIII t display: NO COMMUNICATION BUS? All Yes → Refer to the Communication category for the related symptom. Perform BODY VERIFICATION TEST - VER 1. No → Go To 2 2 Turn the ignition on. t, read Instrument Cluster DTCs. Does the DRBIII t display any DTCs? All Yes → Refer to Instrument Cluster category for the related symptom(s). Perform BODY VERIFICATION TEST - VER 1. No → Go To 3 3 Turn the ignition on. t, check the TCM and ABS module for the same or similar No Communication with Instrument Cluster DTC. t display same or similar DTC in TCM & ABS module? All Yes → Go To 4 No → Go To 6 165 HEATING & A/C |