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AV REAR DOOR SPEAKER AV-237 < DTC/CIRCUIT DIAGNOSIS > [NAVIGATION] C D E F G H I J K L M B A O P REAR DOOR SPEAKER Diagnosis Procedure INFOID:0000000010435732 Regarding Wiring Diagram information, refer to . 1. CONNECTOR CHECK Check the AV control unit and speaker connectors for the following: YES >> GO TO 2. NO >> Repair the terminals or connectors. 2. CHECK REAR DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY 1. Disconnect AV control unit connector M48 and suspect rear door speaker connector. 2. Check continuity between AV control unit connector M48 and suspect rear door speaker connector. 3. Check continuity between AV control unit connector M48 and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace harness or connectors. 3. CHECK REAR DOOR SPEAKER SIGNAL 1. Connect AV control unit connector M48 and suspect rear door speaker connector. 2. Turn ignition switch to ON. 3. Push AV control unit POWER switch. 4. Check signal between the terminals of AV control unit connector M48. AV control unit Rear door speaker Continuity Connector Terminal Connector Terminal M48 4 D55 (LH) 1 Yes 5 2 13 D69 (RH) 1 14 2 AV control unit Ground Continuity Connector Terminal M48 4 — No 5 13 14 AV control unit connector M48 Condition Reference value (+) ( − ) Terminal Terminal |