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AV-48 < DTC/CIRCUIT DIAGNOSIS > [DISPLAY AUDIO] FRONT TWEETER FRONT TWEETER Diagnosis Procedure INFOID:0000000011276750 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 TWEETER SIGNAL CIRCUIT CONTINUITY 1. Disconnect audio unit connector M83 and suspect front tweeter connector. 2. Check continuity between audio unit connector M83 and suspect front tweeter connector. 3. Check continuity between audio unit connector M83 and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace harness or connectors. 3. CHECK FRONT TWEETER SIGNAL 1. Connect audio unit connector M83 and suspect front tweeter connector. 2. Turn ignition switch to ON. 3. Push audio unit POWER switch. 4. Check signal between the terminals of audio unit connector M83. Audio unit Front tweeter Continuity Connector Terminal Connector Terminal M83 2 M80 (LH) 1 Yes 3 2 11 M23 (RH) 1 12 2 Audio unit Ground Continuity Connector Terminal M83 2 — No 3 11 12 Audio unit connector M83 Condition Reference value (+) ( −) Terminal Terminal |