- 2003 FORD F150 FUEL PUMP DRIVER MODULE LOCATION DRIVER
- 2003 FORD F150 FUEL PUMP DRIVER MODULE LOCATION CODE
Note: Certain vehicles the FPDM functions are incorporated in the Rear Electronics Module (REM). The PCM sets the DTC when the message is received. The FPDM sends a message to the PCM through the FPM circuit, indicating this failure was detected.
2003 FORD F150 FUEL PUMP DRIVER MODULE LOCATION CODE
The diagnostic trouble code P1235 indicates the FPDM detected an invalid or missing FP circuit signal from the PCM. However, this particular vehicle did not set this code.ĭTC P1235 – Fuel Pump Control out of range Sometimes the PCM will flag a code P1235 if the fuel pump control unit does not respond at all so you may see this code as well. Based on my experience, this code will also set if there is no or low fuel pressure. The diagnostic trouble code P0191 indicates an issue with the fuel rail pressure transducer sensor which is located on the top left of the engine on the fuel rail. The test fails when the fuel pressure falls below or exceeds a minimum/maximum calibrated value for a calibrated period of time. The comprehensive component monitor checks the FRP for acceptable fuel pressure. This P1233 diagnostic trouble code sets when the Powertrain ContrModule loses communication with the FPDM.ĭTC P0191 – Fuel Rail Pressure Sensor Circuit Performance
2003 FORD F150 FUEL PUMP DRIVER MODULE LOCATION DRIVER
This code can also be set if power to the fuel pump driver module is open (faulty fuel pump relay or inertia/fuel cut-off switch is tripped). The diagnostic trouble code P1233 code indicates an issue with the fuel pump driver module. Inertia fuel shutoff switch needs to be reset The third code I have listed below was not stored in the computer but can very well be flagged by the PCM if the fuel pump driver module stops communicating altogether.ĭTC P1233 – Fuel System Disabled Or OfflineĮscort/Tracer (only): FPDM PWR circuit is open, or the CCRM pin 11 is open to battery voltage, or the CCRM is damagedįPDM ground circuit is open, or FPM circuit is open or shorted The first two codes below are the two that were in the PCM when I plugged into the computer or obd2 diagnostic connector under the dash. It can also verify that the fuel pump relay contacts are closed and there is a B+ supply to the fuel pump relay. With the pump on and the FPDM circuit high, the PCM can verify that the FP power circuit from the fuel pump relay to the FPDM splice is complete. With the pump running, voltage is now being supplied from the pump relay to the FP power and FPDM circuits. This also confirms that the FP power or FPDM circuits are not shorted to power. The PCM is also able to verify that the FPDM circuit and the FP power circuit are complete from the FPDM splice through the pump to ground. With the pump off, this voltage is pulled low by the path to ground through the fuel pump. When starting the engine, the PCM sends a low current voltage down the FPM circuit. Some inputs that it uses are the fuel rail pressure sensor, throttle angle engine temperature etc. The Powertrain control module and inputs to the powertrain control module will determine how fast the fuel pump driver module will run. Ford uses a pulse width modulated Fuel Pump Driver Module (FPDM or fuel pump control unit) to control the fuel pump speed. On these vehicles, the fuel system is a bit different. Click here to chat live with a Ford Mechanic. But first, I will explain how the fuel pump operates. From there, I can pull codes and read live data using my scanner. Next step was to plug into the 16 pin OBD2 diagnostic connector located under the dash. I was quickly able to confirm the engine has spark by verifying that the check engine light goes off while cranking the engine over and also by using my spark tester installed into the ignition coil. There was a diagnostic trouble code of P0191 and P1233. Upon checking, the truck had spark but no fuel pressure when cranking. Customer stated they were in the middle of a car wash and the engine stalled out and would not restart. Recently, we had a 2004 ford f150 with a 5.4-liter engine towed into the shop.
0 kommentar(er)
