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Symptom: U0140-NO BODY BUS MESSAGES When Monitored and Set Condition: U0140-NO BODY BUS MESSAGES When Monitored: Engine running. Battery voltage greater than 10.0 volts. Set Condition: No BUS messages recieved from the BCM for 20 seconds. POSSIBLE CAUSES DTC RESET COMMUNICATE WITH BCM PCI BUS CIRCUIT OPEN PCM TEST ACTION APPLICABILITY 1 Turn the ignition on. t, erase DTCs. Start the engine on and off several times. Leave the engine running for at least 20 t, read DTC’s. Does the DTC reset? All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 2 Turn the ignition on. t, attempt to communicate with the BCM. Can communication be established with the BCM? All Yes → Go To 3 No → Refer to the Communication Category and perform the appropri- ate symptom related to no communication with BCM. 297 DRIVEABILITY - NGC |