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AV-32 < DTC/CIRCUIT DIAGNOSIS > [BASE AUDIO] FRONT TWEETER FRONT TWEETER Description INFOID:0000000010247116 The audio unit sends audio signals to the front tweeters using the front tweeter circuits. Diagnosis Procedure INFOID:0000000010247117 Regarding Wiring Diagram information, refer to 1. CONNECTOR CHECK Check the audio unit and speaker connectors for the following: • Proper connection • Damage • Disconnected or loose terminals YES >> GO TO 2 NO >> Repair the terminals or connectors. 2. CHECK FRONT DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY 1. Disconnect audio unit connector M43 and suspect front tweeter connector. 2. Check continuity between audio unit connector M43 and suspect front tweeter connector. 3. Check continuity between audio unit connector M43 and ground. Is the inspection result normal? YES >> GO TO 3 NO >> Repair or replace harness or connectors. 3. CHECK FRONT DOOR SPEAKER SIGNAL 1. Connect audio unit connector M43 and suspect front tweeter connector. 2. Turn ignition switch to ACC. 3. Push audio unit POWER switch. 4. Check signal between the terminals of audio unit connector M43. Audio unit Front tweeter Continuity Connector Terminal Connector Terminal M43 2 M109 (LH) 1 Yes 3 2 11 M111 (RH) 1 12 2 Audio unit Ground Continuity Connector Terminal M43 2 — No 3 11 12 Audio unit connector M43 Condition Reference value (+) ( −) Terminal Terminal |