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*NO RESPONSE FROM UNIVERSAL GARAGE DOOR OPENER/TIRE PRESSURE MONITOR (CONTINUED) POSSIBLE CAUSES FUSED B+ CIRCUIT OPEN FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN GROUND CIRCUIT OPEN SCI TRANSMIT CIRCUIT OPEN SCI TRANSMIT CIRCUIT SHORTED TO GROUND SCI TRANSMIT CIRCUIT SHORTED TO VOLTAGE A/C HEATER CONTROL MODULE INSTRUMENT CLUSTER POWER TOP CONTROL MODULE UGDO/TIRE PRESSURE MONITOR For a complete Data Link Connector Circuit Diagram, (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MOD- Diagnostic Test 1. CHECK COMMUNICATION WITH OTHER MODULES Turn the ignition on. Using the DRB III T , attempt to communicate with the PCM. Is the DRB III T able to communicate with the PCM? Yes >> Go to 2 No >> Perform Symptom *No Response From All Modules. 2. CHECK COMMUNICATION WITH OTHER MODULES ON SCI TRANSMIT CIRCUIT With the ignition on. Using the DRB III T , attempt to communicate with either the Instrument Cluster, A/C Heater Control Module, or Power Top Control Module (if Is the DRB III T able to communicate with the module selected? Yes >> Go to 3 No >> Go to 7 ZH ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS 8E - 25 |