Instantaneous Fuel Economy

The instantaneous fuel economy is a function of distance divided by fuel used over a short period of time. The IPC receives a class 2 message from the PCM indicating the fuel used. The IPC uses the distance information calculated for the odometer display. The instantaneous fuel economy parameter is displayed on the DIC in one of the following formats:
^ FUEL ECONOMY
XX INST MPG

^ FUEL ECONOMY
XX INST L/100 km

The XX represents the calculated instantaneous fuel economy value. The units of the display correspond to the current IPC setting. The instantaneous fuel economy cannot be reset by the driver.