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Home >> Lincoln >> 2005 >> LS V8-3.9L VIN A >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Pinpoint Tests >> Test A: No Communication With the Dual Automatic Temperature Control (DATC) Module
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Test A: No Communication With the Dual Automatic Temperature Control (DATC) Module

PINPOINT TEST A: NO COMMUNICATION WITH THE DUAL AUTOMATIC TEMPERATURE CONTROL (DATC) MODULE


A1-A3:






A3-A5:






Normal Operation
Under normal operation, the Dual Automatic Temperature Control (DATC) module receives battery voltage through circuit 29-FA10 (OG/GN) and ignition voltage through circuit 20-FA10 (PK/OG). A ground is provided for the DATC module through circuit 31-FA10 (BK).

Possible Causes
- An open in circuit 29-FA10 (OG/GN), 20-FA10 (PK/OG) or 31-FA10 (BK).
- DATC module.
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