F1: Use Memory Switch To Diagnose Driver Side Seat Position Sensors
Turn the ignition key to the RUN or ACC position. Press either a memory SET or RECALL button, note the number of LED flashes. If the set LED flashes more than once, locate and service the open/grounded seat position sensor signal line and/or an open/grounded sensor power supply line. If the set LED does not flash more than once, go to the next step.