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Symptom: P1793-TRD LINK COMMUNICATION ERROR When Monitored and Set Condition: P1793-TRD LINK COMMUNICATION ERROR When Monitored: The Transmission Control Module (TCM) pulses the 12 volt TRD signal from the Powertrain Control Module (PCM) to ground, during torque managed shifts with Set Condition: This DTC is set when the Transmission Control Module (TCM) sends two subsequent torque reduction messages to the Powertrain Control Module (PCM) and does POSSIBLE CAUSES POWERTRAIN CONTROL MODULE TEST ACTION APPLICABILITY 1 NOTE: Due to the integration of the Engine and Transmission controllers All Repair Replace the Powertrain Control Module per the Service Informa- t PERFORM QUICK LEARN AND REPROGRAM PINION FACTOR. 299 TRANSMISSION - NGC |