Escape, Mariner 2008-2009

Powertrain Control Module

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Operation



Specific to:

Ford Escape 2005-2008

Mercury Mariner 2005-2008

The center of the Electronic Engine Control (EEC) system is a microprocessor called the Powertrain Control Module (PCM). The PCM receives input from sensors and other electronic components (switches, relays). Based on the information received and programmed into its memory, the PCM generates output signals to control various relays, solenoids and actuators. There are several different types of PCMs in use for this model year. The Escape and Mariner use the 150-pin PCM.

Removal & Installation



Specific to:

Ford Escape 2005-2008

Mercury Mariner 2005-2008


NOTE
Any Powertrain Control Module (PCM) replacement will require that ALL customer keys are available to be programmed at the time of installation. PCM replacement DOES NOT require new keys.

  1. Retrieve the module configuration. Carry out the module configuration retrieval steps of the Programmable Module Installation procedure.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the PCM stud bolt nut and position the wiring harness aside.
  6.  
  7. Disconnect the 3 PCM electrical connectors.
  8.  
  9. Remove the 2 stud bolts and the PCM
  10.  
  11. Remove the PCM cowl seal.
  12.  

To install:

  1. Install the PCM cowl seal.
  2.  
  3. Install the PCM and tighten the 2 stud bolts to 53 inch lbs. (6 Nm).
  4.  
  5. Connect the 3 PCM electrical connectors.
  6.  
  7. Position the wiring harness. Install and tighten the PCM stud bolt nut to 53 inch lbs. (6 Nm).
  8.  
  9. Restore the module configuration. Carry out the module configuration restore steps of the Programmable Module Installation procedure.
  10.  
  11. Reprogram the passive anti-theft system (PATS). Carry out the Key Programming Using Two Programmed Keys procedure.
  12.  

Testing



Specific to:

Ford Escape 2005-2008

Mercury Mariner 2005-2008

  1. Check the power and grounds for the Powertrain Control Module (PCM). Check all the connector pins for corrosion or contact problems. Refer to PCM connectors, power and ground chart.

    Click image to see an enlarged view

    Fig. PCM connector view



    Click image to see an enlarged view

    Fig. PCM voltage and power pin location chart

  2.  

 
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