Mirror Defogger Circuit

CIRCUIT DESCRIPTION

The passenger door ECU receives signals from the defogger switch, the wiper switch and the rain sensor to operate the mirror defogger.




When the battery voltage is applied to the terminal as follows, the mirror defogger functions accordingly.

Wiring Diagram:

Steps 1 - 3:

INSPECTION PROCEDURE

HINT: In case of using the LEXUS hand-held tester, start the inspection from step 1 and in case of not using the LEXUS hand-held tester, start from step 2.