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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1560 (Climate Control System - General Information (Except Electric) (1 Of2)) >> Description And Operation >> Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) - System Operation and Component Description >> Control System Logic

Control System Logic

WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

The DATC system customer interface is in one or more locations depending on vehicle option content:

When the touchscreen or voice commands are used and A/C is selected, the APIM sends message over the MS-CAN to the BCM. The BCM then sends the request to the PCM over the HS-CAN. The PCM controls the A/C clutch relay.

When the customer directly inputs an A/C request into the DATC module, it sends the request to the BCM over the MS-CAN. The BCM then sends the request to the PCM over the HS-CAN. The PCM controls the A/C clutch relay.

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