Fuel Gauge

WARNING: This page is about a different car, the 2002 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

The fuel gauge system has a saddle-type fuel tank with two integrated fuel senders: the fuel delivery module (FDM) and the jet pump module (JPM). The FDM is located in the right side of the fuel tank and the JPM is located in the left side of the fuel tank. Fuel level status is sent directly to the rear electronic module (REM), which is hardwired to the fuel senders. The REM sends the fuel data to the instrument cluster via the standard corporate protocol (SCP) line.

Normal operating range of the FDM is from 16 +/- 2 ohms at empty (E) to 155 +/- 4 ohms at full (F). Normal operating range of the JPM sender is from 19 +/- 2 ohms at empty (E) to 160 +/- 2 ohms at full (F). If either the REM or JPM fuel sender has an open or shorted signal, the instrument cluster will log diagnostic trouble code (DTC) B1201. If the JPM sender is open, the fuel gauge will default to the FDM sender value only and the fuel gauge will indicate E to 1/2 tank (depending on the fuel level on the FDM side of the tank). If the FDM is open, the fuel gauge will default to the empty position.