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Symptom: ENGINE RPM MESSAGE When Monitored and Set Condition: ENGINE RPM MESSAGE When Monitored: Valid TPS CAN message received at least once CAN Bus Circuit, Engine CAN Message Missing and Engine CAN Message Incorrect are not active. Set Condition: Signal 9engine speed9 not valid or PCM/ECM error. POSSIBLE CAUSES CAN BUS CIRCUIT DTC PRESENT ENGINE DTCS PRESENT ECM - ENGINE RPM MESSAGE TCM - ENGINE RPM MESSAGE TEST ACTION APPLICABILITY 1 NOTE: Low fluid level can be the cause of many transmission problems. If t, read the engine DTCs. Check and repair all engine DTCs prior to performing transmission symptom diagnostics. t, read and record all Transmission DTCs. NOTE: Check connectors - Clean/repair as necessary. Poor pin to terminal All Continue 2 Ignition on, engine not running. t, read Transmission DTCs. NOTE: If the DTC, CAN BUS CIRCUIT, is present, perform diagnostics on All Yes → Refer to the Transmission category and perform the appropriate symptom. No → Go To 3 62 TRANSMISSION - NAG1 |