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Home >> Lexus >> 2012 >> HS 250h >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Audio/Video System (W/ Navigation) (Diagnostic Codes & Symptom Tests) >> AUDIO AND VISUAL SYSTEM (w/ Navigation System) >> Symptom Tests >> Sound Signal Circuit between Navigation ECU and Multimedia Interface ECU >> Description
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Sound Signal Circuit between Navigation ECU and Multimedia Interface ECU: Description

The multimedia interface ECU sends a sound signal to the display and navigation module display 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, display and navigation module display, DCM (telematics transceiver)*1 or speakers.