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AV-588 < DTC/CIRCUIT DIAGNOSIS > [COLOR DISPLAY - W/BOSE & NAVI] TWEETER TWEETER Description INFOID:0000000009471508 The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the tweeters using the audio signal circuits. Diagnosis Procedure INFOID:0000000009471509 Regarding Wiring Diagram information, refer to AV-614, "Wiring Diagram - With BOSE audio system With Nav- 1. CONNECTOR CHECK Check the AV control unit, BOSE speaker amp. and speaker connectors for the following: • Proper connection • Damage • Disconnected or loose terminals YES >> GO TO 2 NO >> Repair the terminal and connector. 2. HARNESS CHECK 1. Disconnect BOSE speaker amp. connector B110 and suspect tweeter connector. 2. Check continuity between BOSE speaker amp. harness connec- tor B110 (A) and suspect tweeter harness connector (B). 3. Check continuity between BOSE speaker amp. harness connec- tor B110 (A) and ground. Are continuity test results as specified? YES >> GO TO 3. NO >> • Check connector housings for disconnected or loose terminals. • Repair harness or connector. 3. TWEETER SIGNAL CHECK A B Continuity Connector Terminal Connector Terminal B110 1 M51 1 Yes 2 2 4 M52 1 3 2 A — Continuity Connector Terminal B110 1 Ground No 2 4 3 AWNIA1697ZZ |