Circuit Description
Unless the driver's door is opened then closed within 43 seconds after the ignition switch is turned from ON to OFF, the instrument panel J/B (body ECU) supplies the power source to the master switch.
HINT:
If a malfunction is detected in the jam protection pulse sensor and limit switch, the operation after the ignition switch is turned OFF will be prohibited by the fail-safe function. At this time, the AUTO UP and DOWN operations will be prohibited, as well.