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AV-180 < DTC/CIRCUIT DIAGNOSIS > [NAVIGATION] FRONT TWEETER FRONT TWEETER Diagnosis Procedure INFOID:0000000009485304 Regarding Wiring Diagram information, refer to . 1. CONNECTOR CHECK Check the AV control unit, audio amplifier and tweeter 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 amplifier connector B159 and suspect front tweeter connector. 2. Check continuity between audio amplifier connector B159 and suspect front tweeter connector. 3. Check continuity between audio amplifier connector B159 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 amplifier connector B159 and suspect front tweeter connector. 2. Turn ignition switch to ACC. 3. Push AV control unit POWER switch. 4. Check signal between the terminals of audio amplifier connector B159. Audio amplifier Front tweeter Continuity Connector Terminal Connector Terminal B159 14 M109 (LH) 1 Yes 30 2 13 M111 (RH) 1 29 2 Audio amplifier Ground Continuity Connector Terminal B159 14 — No 30 13 29 Audio amplifier connector B159 Condition Reference value (+) ( −) Terminal Terminal |