Microphone Circuit between Overhead Junction Block and Multi-display: Description

w/o LEXUS Link System:

This circuit sends a microphone signal from the microphone to the display and navigation module display.

It also supplies power from the display and navigation module display to the microphone.

w/ LEXUS Link System:

This circuit sends a microphone signal from the microphone to the display and navigation module display through the telephone ECU assembly. It also supplies power from the telephone ECU assembly to the microphone.