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Symptom: *NO RESPONSE FROM AUTOMATIC TEMPERATURE CONTROL POSSIBLE CAUSES ATTEMPT TO COMMUNICATE WITH THE BCM GROUND CIRCUIT OPEN FUSED (B+) CKT OPEN FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN OPEN PCI BUS CIRCUIT AUTOMATIC TEMPERATURE CONTROL MODULE TEST ACTION APPLICABILITY 1 Turn the ignition on. All Yes → Go To 2 No → Refer to the symptom list for problems related to no communica- tion with the BCM. 2 Turn the ignition off. All Yes → Go To 3 No → Repair the Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1. 3 Turn the ignition off. All Yes → Go To 4 No → Repair the Fused B+ circuit for an open or short. Refer to the wiring diagrams in the service information. 4 Turn the ignition off. All Yes → Go To 5 No → Repair the Fused Ignition Switch circuit for an open or short. Refer to the wiring diagrams in the service information. 363 COMMUNICATION |