Circuit Description
The door unlock detection switch is built into the door lock motor assembly. The switch is OFF when the door lock knob is in lock position, and is ON when the knob is in the unlock position. Furthermore, the door unlock detection switch circuit has terminal No. 8 (+B) connected inside the theft deterrent ECU, when the door unlock detection switch is OFF, battery positive voltage is applied to the terminal of the door unlock detection switch circuit of the wireless door lock ECU. See Fig 1.