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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 for 10 seconds. POSSIBLE CAUSES NO COMMUNICATION WITH ECM OTHER BUS PROBLEMS PRESENT TRANSMISSION CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS TEST ACTION APPLICABILITY 1 With the DRBIII t, Check the STARTS SINCE SET counter for P1694. Note: This counter only applies to the last DTC set. All Yes → Go To 2 No → Go To 5 2 With the DRBIII t, check all of the other modules on the vehicle for evidence of a vehicle bus problem. 9No Bus9 or is there any evidence of an overall vehicle bus problem? All Yes → Refer to the Communication category and perform the appropri- ate symptom. No → Go To 3 3 Ignition on, engine not running. t, attempt to communicate with the Engine Control Module. Can the DRBIII t communicate with the ECM? All Yes → Go To 4 No → Refer to the Communication category and perform the appropri- ate symptom. 129 TRANSMISSION - EATX |