Circuit Description
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
The recline seat motor is equipped with a internal hall effect sensor to determine seat position. The sensor is supplied with a reference voltage from the motor. A recline input circuit and ground circuit come from the memory seat module. The memory seat module receives a certain number of pulses from the sensor depending upon the position of the seat. The memory seat module then records the number of pulses so that the seat can be repositioned back to the same point that it was set at using the memory seat switches. The memory seat module then interprets the pulse input into a voltage reading for the data list on the scan tool.