Back Door Opener Switch Circuit

Back Door Opener Switch Circuit

DESCRIPTION

The back door opener switch only turns on while the back door handle is being pulled, and turns off when the handle is released.
The body ECU is connected to the back door opener switch via terminal BDSU and back door unlatch operation request signals are input to the ECU.
The body ECU applies voltage to the back door opener switch via terminal BDSU. When the switch is on (there is continuity between the switch terminals), a back door unlatch operation request signal is input to the body ECU.
w/o Power back door system:
The body ECU directly activates the motor built into the back door lock assembly to unlatch the back door.

w/ Power back door system:
The body ECU, using multiplex communication, sends signals input from the back door operation switch to the power back door ECU. The power back door ECU then activates the motor built into the back door lock assembly to unlatch the back door based on the signals.

Wiring Diagram:

Step 1:

Step 1(Continued)-2:

Step 3:

INSPECTION PROCEDURE