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Home >> Ford >> 2006 >> F 150 2WD Pickup V6-4.2L VIN 2 >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Pinpoint Tests >> Test F: No Communication With The Electronic Automatic Temperature Control (EATC) Module
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Test F: No Communication With The Electronic Automatic Temperature Control (EATC) Module

PINPOINT TEST F: NO COMMUNICATION WITH THE ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC) MODULE


F1-F2:






F2 Continued:






Normal Operation
Under normal operation, the EATC module receives a ground through circuit 875 (BK/LB). The EATC module is supplied constant battery voltage through circuit 729 (RD/WH) and ignition switched voltage through circuit 296 (WH/VT).

Possible Causes
- Fuse(s)
- An open in circuit 875 (BK/LB), 729 (RD/WH) or 296 (WH/VT)
- EATC module
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