Circuit Description
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The heated seat switches are momentary contact switches and are inputs to the driver and passenger door switches. A ground circuit is connected to the switch assembly through the door switch, and when a heated seat switch is pressed and released a brief switch signal is supplied to the door switch. Whenever the door module receives an active heated seat switch input, the active switch signal is sent to the memory seat module as a GMLAN message. The memory seat module determines the heated seat mode based on the switch messages and sends a message to the door switch to display the heated seat indicators as necessary.