Fuel Level Sensing

The PZM calculates the fuel level then sends a serial data message to the instrument cluster and the Powertrain Control Module (PCM). The PZM sends the fuel level information to the instrument cluster each time there is a change of at least 0.5 liters (0.13 gallons). The PZM sends the fuel level information to the PCM each time a change of 1.0 liter (0.26 gallons).