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Test A: The Power Seat Is Inoperative - Driver, With Power Recliner
PINPOINT TESTSCAUTION: Electronic modules are sensitive to electrostatic discharge. If exposed to these charges, damage can result.
Refer to Inspection and Verification, the Diagnostic Trouble Code (DTC) Chart and the Symptom Chart for direction to the appropriate Pinpoint Test. [1][2]Diagnostic Trouble Code Descriptions Symptom Related Diagnostic Procedures
PINPOINT TEST A: THE POWER SEAT IS INOPERATIVE - DRIVER, WITH POWER RECLINER
A1-A2:
Normal Operation
The driver seat control switch is powered by battery voltage on circuit SBB60 (GN/RD) and is supplied ground on circuit GD145 (BK/BU). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor or power recliner motor to move the seat or backrest. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor or power recliner motor, which moves the seat or backrest in the opposite direction. 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 seat track motor needs to be installed, it is necessary to install an entire power seat track. The power recline motor is serviced separately.
Possible Causes
An inoperative driver power seat can be caused by:
- a fuse.
- wiring, terminals or connectors.
- a faulty seat control switch.