Door Key Lock and Unlock Switch Circuit (Lock Side)

CIRCUIT DESCRIPTION
The door key lock and unlock switch is built into the door key cylinder. When the key is turned to the lock side, the lock terminal of the switch is grounded, and when the key is turned to the unlock side the unlock terminal is grounded.
Furthermore, the door key lock and unlock switch circuit has terminal + B connected inside the theft deterrent and door lock ECU, when neither the lock or unlock terminal of the door key lock and unlock switch are grounded, battery positive voltage is applied to the door key lock and unlock switch circuit of the wireless door lock ECU.
(Tr inside the ECU coming ON causes the wireless door lock ECU to output a signal to unlock all the doors.)
Tr inside the ECU coming ON causes the wireless door lock ECU to output a signal to lock all the doors.





WIRING DIAGRAM





INSPECTION PROCEDURE