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Symptom: P1694-BUS COMMUNICATION WITH ENGINE MODULE When Monitored and Set Condition: P1694-BUS COMMUNICATION WITH ENGINE MODULE When Monitored: Continuously with ignition key on. Set Condition: If no bus messages are received from the Powertrain Control Module (PCM) for 10 seconds. Note: Due to the integration of the Powertrain and Transmission POSSIBLE CAUSES POWERTRAIN CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS TEST ACTION APPLICABILITY 1 With the DRBIII t, erase Transmission DTC’s. Start the Engine in Park. t, read Transmission DTCs. NOTE: The Engine must run for at least 20 seconds to reset this DTC. All Yes → Go To 2 No → Go To 3 2 Using the schematics as a guide, inspect the wiring and connectors. Repair as All Repair Replace the Powertrain Control Module per the Service Informa- t PERFORM QUICK LEARN AND REPROGRAM PINION FACTOR. 3 The conditions necessary to set the DTC are not present at this time. t, check the EATX EVENT DATA to help identify the conditions in which the DTC was set. All Yes → Repair as necessary. Perform 40/41TE (NGC) TRANSMISSION VERIFICATION No → Test Complete. 156 TRANSMISSION - NGC |