Circuit/System Description

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Battery positive voltage is supplied at all times to the heated seat module through the battery positive voltage circuit and the TRUNK/HTD SEATS 20 A fuse located in the underhood fuse block. When commanded ON, the heated seat module uses this voltage to heat the seat heating elements. Ground for the heated seat module, the seat heater elements, and the seat temperature sensor is provided through the module ground circuit at G301 for the driver seat and G201 for the passenger seat.

When the heated seat switch is placed in either the high or low temperature position, battery positive voltage is applied through the heated seat switch signal circuit to the heated seat module. At the same time, battery voltage is also applied through one of two resistors in the switch signal circuit and the heated seat HI/LO signal circuit to the module. In response to these switch signals, the heated seat module applies battery positive voltage through the heated seat element control circuit to the seat heating elements. When the heated seat switch is in the HIGH heat position, battery voltage is applied through a 1.1 kΩ resistor and the module sets the seat temperature to high heat. When the heated seat switch is in the LOW heat position, battery voltage is applied through a 2.2 kΩ resistor and the module sets the seat temperature to low heat.