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AV-584 < DTC/CIRCUIT DIAGNOSIS > [COLOR DISPLAY - W/BOSE & NAVI] AMP ON SIGNAL CIRCUIT AMP ON SIGNAL CIRCUIT Description INFOID:0000000009471504 When the audio system is turned on, a voltage signal is supplied from the AV control unit to the BOSE speaker amp. When this signal is received, the BOSE speaker amp. will turn on. Diagnosis Procedure INFOID:0000000009471505 Regarding Wiring Diagram information, refer to AV-614, "Wiring Diagram - With BOSE audio system With Nav- 1. CHECK AMP ON SIGNAL (BOSE SPEAKER AMP) 1. Turn audio system ON. 2. Check voltage between BOSE speaker amp. harness connector B109 terminal 20 and ground. Is inspection result normal? YES >> Inspection End. NO >> GO TO 2. 2. CHECK AMP ON SIGNAL (AV CONTROL UNIT) Check voltage between AV control unit harness connector M160 ter- minal 1 and ground. Is inspection result normal? YES >> Repair harness or connector. NO >> Replace AV control unit. Refer to (+) (-) Voltage (Approx.) Connector Terminal B109 20 Ground Battery voltage AWNIA1707ZZ (+) (-) Voltage (Approx.) Connector Terminal M160 1 Ground Battery voltage ALNIA0148ZZ |