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AV-352 < COMPONENT DIAGNOSIS > [BOSE AUDIO WITH NAVIGATION] SUBWOOFER (SEDAN) 1. Connect AV control unit connector M47 and BOSE speaker amp. connector B121. 2. Turn ignition switch to ACC. 3. Push “POWER” switch. 4. Check the signal between AV control unit harness connector M47 terminals with CONSULT-III or oscilloscope. Are the audio signal voltage readings as specified? YES >> Replace BOSE speaker amp. Refer to "Removal and Installation - Sedan" . NO >> Replace AV control unit. Refer to Connector Terminals Condition Reference signal (+) (-) M47 5 6 Receive audio 14 15 ALNIA0172ZZ SKIA0177E |