Circuit/System Description

The driver and front passenger heated seats are controlled by separate heated seat switches. Both switches are located in the climate control panel (CCP). When a heated seat switch is pressed, the CCP sends a GMLAN message via the serial data line to the heated seat module indicating the heated seat request. In response to this signal, the heated seat module activates the heated seat by applying battery voltage to the seat heating elements. The heated seat module then sends a GMLAN message back to the CCP commanding it to illuminate the appropriate seat temperature indicator.