LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2012 >> HS 250h >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio/Video System (W/O Navigation) (Diagnostic Codes & Symptom Tests) >> AUDIO AND VISUAL SYSTEM (w/o Navigation System) >> Symptom Tests >> Sound Signal Circuit between Radio Receiver and Multimedia Interface ECU >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Sound Signal Circuit between Radio Receiver and Multimedia Interface ECU: Description

The multimedia interface ECU sends sound signals to the radio receiver assembly through this circuit.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, radio receiver assembly, DCM (telematics transceiver)*1 or speakers.