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Home >> Ford >> 2024 >> Mustang EcoBoost, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Climate Control System - General Information (Specifications - Automatic Temperature Control Pinpoint Tests)) >> Description And Operation >> Climate Control System - Vehicles With: Manual Temperature Control - System Operation and Component Description >> The Refrigerant Cycle >> Control System Logic

Control System Logic

WARNING: This page is about a different car, the 2024 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

When the touchscreen FDIM 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 sends the message to the HVAC control module over the MS-CAN and the GWM sends the A/C request to the PCM over the FD-CAN.

When the customer directly inputs a climate control setting or an A/C request into the HVAC control module, the module sends the request to the GWM over the MS-CAN. The GWM relays the request to the PCM over the FD-CAN.

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