2003 Ford Excursion 4WD V8-6.0L DSL TurboFACTORY OEM SERVICE PROCEDURE

Diesel PCM Input





Power Monitor
The Diesel Engine Power Monitor (DEPM) strategy resides in the Transmission Control Module located inside of the PCM. The function of the DEPM is to monitor engine rpm when there is no power demand from the APP sensor.

Under normal engine idle operation, the DEPM value must always be higher than engine rpm. In the event that rpm does increase to its calibrated idle speed value following completion of deceleration fuel shutoff, due to the injectors not turning off, the DEPM will disable crank and cam output signals, sent by the PCM to the FICMM. The FICMM input line informs the DEPM when the injectors are turned on and when the injectors are turned off. When the FICMM line is either shorted or open, the monitor strategy assumes that the fuel injectors are always turned on and sets a DTC.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.