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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 817 (Seat System) >> Diagnostic Information and Procedures >> DTC B1850, B1860, B1960, B2355, B2365, or B2375: No Position Sensor Movement Detected During Adjuster Motor Operation >> Circuit Description

Circuit Description

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The driver seat module monitors the positions of most of the seat adjuster motors using hall effect type position sensors. The hall effect position sensors are supplied with battery positive reference and ground circuits from the driver seat module. The position sensor signal circuits are supplied battery positive voltage through a resistor then monitored within the driver seat module. During adjuster motor operation the hall effect position sensor provides a single pulse for every adjuster motor shaft rotation. The driver seat module counts the pulses from the position sensor signal circuits to determine the adjuster motor positions when storing or recalling memory seat position settings.

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