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Symptom: *NO RESPONSE FROM THATCHAM ALARM MODULE POSSIBLE CAUSES ATTEMPT TO COMMUNICATE WITH THE BCM GROUND CIRCUIT OPEN FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN OPEN PCI BUS CIRCUIT THATCHAM ALARM 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 Ignition Switch Output circuit for an open or short. 411 COMMUNICATION |