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Symptom: *NO RESPONSE FROM RADIO POSSIBLE CAUSES NO RESPONSE FROM RADIO OPEN RUN/ACC RELAY CONTROL CIRCUIT OPEN FUSED B+ CIRCUIT GROUND CIRCUIT OPEN OPEN PCI BUS CIRCUIT RADIO TEST ACTION APPLICABILITY 1 Turn the ignition on. All Yes → Go To 2 No → Refer to the Communications category and perform the symptom PCI Bus Communication Failure. 2 Turn the ignition off. All Yes → Go To 3 No → Repair the RUN/ACC Relay Control circuit for an open or short. Refer to the wiring diagrams located in the Service Information. 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 located in the Service Information. 169 COMMUNICATION |