Fuel Tank And Lines - TDV6 3.0L Diesel/TDV6 3.0L Diesel - Gen 1.5/TDV6 3.0L Diesel - Gen 2 (G1950043): Operation

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The fuel pump in the fuel delivery module receives power via a fuel pump relay in the Rear Junction Box (RJB). The Body Control Module/Gateway Module (BCM/GWM) assembly controls the fuel pump relay. The fuel pump relay is active when the ignition is in all power modes except for Power Mode 0 (vehicle locked and armed).

The PCM connects to the BCM/GWM assembly to receive a 'wake-up' message. In the event of an accident, the Restraints Control Module (RCM) outputs a crash signal. The crash signal goes to the BCM/GWM assembly to disable the fuel pump relay.

Inside the fuel tank there are 2 fuel level sensors, which output signals to the BCM/GWM for fuel tank fuel level. The BCM/GWM processes this information and sends it to the Instrument Cluster (IC). The IC displays the remaining fuel level and low fuel warning.