Fuel Pump Driver Module
NOTE:
On LS and Thunderbird, Fuel Pump Driver Module (FPDM) functions are incorporated into Rear Electronic Module (REM). Fuel pump operation is same as applications using the stand-alone FPDM. REM will communicate diagnostic information through BUS (+) and BUS (-) circuits instead of using a fuel pump monitor circuit.
FPDM receives a duty-cycle signal from PCM and controls fuel pump operation in relation to this duty cycle. This results in variable fuel pump operation speed. The FPDM sends diagnostic information to PCM on fuel pump monitor circuit.