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Home >> Lexus >> 2012 >> CT 200h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> 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 Multi-media Interface ECU >> Description

Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU: Description

The multi-media interface ECU assembly sends the sound signal to the navigation computer sub-assembly*1 or display and navigation module display*2 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, navigation computer sub-assembly*1, display and navigation module display*2, DCM (telematics transceiver)*3 or speakers.

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