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Symptom: *NO RESPONSE FROM PCM-ENGINE STARTS (GAS ONLY) POSSIBLE CAUSES ATTEMPT TO COMMUNICATE WITH ANOTHER VEHICLE CHECK PCM POWERS AND GROUNDS TRANSMISSION CONTROL MODULE CONTROLLER ANTILOCK BRAKE SCI TRANSMIT CIRCUIT SHORTED TO GROUND SCI RECEIVE CIRCUIT SHORTED TO GROUND SCI RECEIVE CIRCUIT OPEN SCI TRANSMIT CIRCUIT OPEN POWERTRAIN CONTROL MODULE TEST ACTION APPLICABILITY 1 Turn the ignition on. All Yes → No → Repair or replace the DRB or DRB cable as necessary. 2 Perform the symptom Checking PCM Power and Ground Circuits in the Driveability All Yes → No → Repair as necessary. 3 Turn the ignition off. All Yes → No → 4 Turn the ignition off. All Yes → No → Replace the Transmission Control Module. 64 COMMUNICATION |