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Home >> Ford >> 2008 >> Explorer 4WD V8-4.6L >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Pinpoint Tests >> Test F: The EATC System Is Inoperative, Intermittent Or Incorrect Operation
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Test F: The EATC System Is Inoperative, Intermittent Or Incorrect Operation

PINPOINT TEST F: THE EATC SYSTEM IS INOPERATIVE, INTERMITTENT OR INCORRECT OPERATION

NOTE: For a complete explanation of the electronic automatic temperature control (EATC) system functions, refer to Description and Operation.

Normal Operation
Under normal operation, the HVAC module - EATC receives a ground through circuit GD145 (BK/BU). The HVAC module - EATC is supplied constant battery voltage through circuit SBP28 (GN/RD) and ignition switched voltage through circuit A_CBP20 (YE/VT).

This pinpoint test is intended to diagnose the following:
- Fuse(s)
- Wiring, terminals or connectors
- HVAC module - EATC


F1-F5:






F6-F13:






F13-F14:




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