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AV-88 < COMPONENT DIAGNOSIS > [AUDIO SYSTEM] FRONT TWEETER FRONT TWEETER Description INFOID:0000000005146327 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:0000000005146328 Regarding Wiring Diagram information, refer to . 1. HARNESS CHECK 1. Disconnect BOSE speaker amp. connector M112 and suspect tweeter connector. 2. Check continuity between BOSE speaker amp. harness connec- tor M112 (A) and suspect tweeter harness connector (B). 3. Check continuity between BOSE speaker amp. harness connec- tor M112 (A) and ground. Are continuity test results as specified? YES >> GO TO 2. NO >> • Check connector housings for disconnected or loose terminals. • Repair harness or connector. 2. FRONT TWEETER SIGNAL CHECK A B Continuity Connector Terminal Connector Terminal M112 4 D12 1 Yes 5 2 8 D112 1 13 2 A — Continuity Connector Terminal M112 4 Ground No 5 8 13 ALNIA0342GB |