Power Door Lock Control System - Problem Symptoms Table
Lexus IS250 IS220d GSE20 ALE20 DOOR LOCK
The master switch and the door control switch on the passenger door send "lock/unlock" request signals to the main body ECU RH. Then, the main body ECU RH sends these request signals to the lock motors in each door to lock/unlock all the doors at once in response to the inputs. (The BEAN is used when the master switch sends request signals to the main body ECU RH.)