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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat System >> Diagnostic Information and Procedures >> DTC B1850: Driver Seat Lumbar Support Horizontal Position Sensor Circuit >> Circuit Description
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Circuit Description

The seat lumbar horizontal position sensor is attached directly to the lumbar motor it monitors. It receives a 5-V reference and a low reference from the seat memory control module. The sensor sends a voltage signal that varies with the movement of the seat through the signal circuit to the control module. Then based on this voltage signal, the control module determines the position of the seat.