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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 329 (Power Seat System) >> Diagnostic Information and Procedures >> Power Folding Seat Inoperative >> Circuit/System Description

Circuit/System Description

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The power fold and tumble second row seats are operated from the power fold switches in the overhead console or the rear switches on the panels behind the rear doors. Voltage to the power fold switches is supplied through the park enable relay while in a de-energized state. The park enable relay is controlled by the body control module (BCM) through a high side drive control circuit and will be energized whenever the ignition is in the accessory, run, or crank positions and the transmission is not in park. The folding seat motors are supplied battery voltage from the REAR SEAT 20A fuse and grounded at the B pillars. When a folding seat switch is pressed, battery voltage is applied through the switch signal circuit to the power fold seat motor. In response to this signal, the folding seat motor will move the seat cushion to folded seat position.