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AV-556 < DTC/CIRCUIT DIAGNOSIS > [COLOR DISPLAY - W/BOSE & NAVI] U121D AV CONTROL UNIT U121D AV CONTROL UNIT DTC Logic INFOID:0000000009471466 Diagnosis Procedure INFOID:0000000009471467 1. CHECK PLAYBACK OF A DISK (CD) Can a disk (CD) be played? YES >> Malfunction may be detected intermittently. NO >> Replace AV control unit. Refer to AV-652, "Removal and Installation" . DTC Display contents of CONSULT DTC detection condition Possible malfunction factor U121D DSP CONN AV control unit malfunction is detected. • If a disc can be played, then there is a possibility of the detection of a • Replace the AV control unit if the malfunction occurs constantly. Re- |