Normal Operation
The driver seat control switch is powered by battery voltage to the driver seat control switch, circuit CBX05 (VT/RD), and is supplied ground on driver circuit GD904 (BK/BU). When pressed, the seat control switch supplies voltage and ground to a power seat track motor or power recliner motor to move the seat or backrest to the desired position. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). There is an additional motor in the power recliner mechanism to move the seat backrest forward and rearward. If a new motor needs to be installed, it is necessary to install an entire power seat track or power recliner mechanism.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Seat control switch