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Home >> Ford >> 2019 >> Fusion S >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control System - General Information (1 Of 2) (Except Hybrid) >> Description And Operation >> Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) - System Operation and Component Description >> System Operation >> Control System Logic
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Control System Logic

The climate control system controls are in one or more locations depending on vehicle option content:

When the FDIM touchscreen or voice commands are used and A/C is selected, the APIM sends the request message over the HS-CAN3 to the GWM. The GWM relays the request to the FCIM over the MS-CAN, and the GWM sends the request to the PCM over the HS-CAN1. The PCM controls the A/C clutch relay.

When the customer directly inputs an A/C request into the FCIM, the module sends the request to the GWM over the MS-CAN, and the GWM sends the request to the PCM over the HS-CAN1. The PCM controls the A/C clutch relay.

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