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Home >> Lincoln >> 2009 >> MKZ AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 993 (Climate Control System - General Information And Diagnostics) >> Diagnostic Tests >> Climate Control System >> Alternate Diagnostic Methods - HVAC Module - Electronic Automatic Temperature Control (EATC) and HVAC Module - Dual Automatic Temperature Control (DATC) >> HVAC Module Cold Boot Process

HVAC Module Cold Boot Process

WARNING: This page is about a different car, the 2008 Mercury Milan, 2008 Lincoln MKZ, and 2008 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The purpose of the cold boot process is to allow the HVAC module to reinitializes and calibrate the actuators. To carry out the cold boot process, follow the steps below.

  1. Turn the ignition switch to the OFF position.
  2. Disconnect the HVAC module electrical connectors.
  3. Wait one minute.
  4. Connect the HVAC module electrical connectors.
  5. Turn the ignition switch to the ON position.
  6. Select any position except OFF on the HVAC module.

    7. The HVAC will now initialize and calibrate the actuators. Calibration of the actuators will take approximately 30 seconds.

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