A/C Request
WARNING: This page is about a different car, the 2008 Suzuki Reno, 2008 Suzuki Forenza, 2007 Suzuki Reno, and 2007 Suzuki Forenza. However, it is still accessible from the selected car via links, so may be relevant.
The A/C Request represents whether the air conditioning is being requested from the HVAC selector. The input is received by the instrument panel cluster and then sent over Universal Asynchronous Receiver Transmitter (UART) serial data to the Engine Control Module (ECM) and finally to the scan tool over class 2 serial data.