Power Seat
WARNING:
Some vehicles are equipped with seatback mounted airbag. Before attempting to diagnose or service any seat or power seat system component you must first disconnect and isolate the battery negative cable. Then wait 2 minutes for the system capacitor to discharge before further system service. This is the only sure way to disable the airbag system. Failure to do so could result in accidental airbag deployment and possible personal injury.
- If the driver power seat exhibits a interrupted or jerky motion, there is a possibility that the wires leading from the memory seat module to the memory seat motor are mis-wired. To check the concern, obtain a DRB-III(R) scan tool and energize each axis one at a time. If any axis stops in approximately 2 seconds (without hitting the end of travel), the feedback for that axis may have an open, short or be miswired. Check the wiring to that axis (module to motor). Fix any wiring problems and retry that axis.
- If any power seat is not operational in any direction, check the power seat circuit breaker, located under the trailing edge of the appropriate power seat.
- If the power seat circuit breaker is OK, check for proper B+ and ground connections at the power seat switch and/or memory seat module. Fix any wiring problems and retry.
- Check the power seat system wire harness connections and pins to ensure proper circuit continuity and ground paths.
- With the dome lamp on, apply the power seat switch in the direction of the failure. If the dome lamp dims, the seat may be jamming. Check under and behind the seat for binding or obstructions. If the dome lamp does not dim, proceed with testing of the individual components and circuits in the power seat system.