Fuel Pump Driver Module (FPDM)
DTC P1233 or P1234 present in Key On Engine Off Self-Test
Key on, engine off.
Measure voltage between the FPDM PWR pin (VPWR for Continental) and ground pin at the FPDM harness connector.
Is voltage greater than 10.5 volts?
If Yes REPLACE FPDM
Tuesday, April 19th, 2011 AT 1:49 AM