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AV REAR DOOR SPEAKER AV-249 < DTC/CIRCUIT DIAGNOSIS > [PREMIUM WITH NAVIGATION] C D E F G H I J K L M B A O P 1. Connect audio amp. connector and suspect speaker connector. 2. Turn ignition switch to ACC. 3. Push “POWER” switch. 4. Check the signal between audio amp. harness connector M113 terminals with CONSULT-III or oscilloscope. Are audio signal voltage readings as specified? YES >> Replace suspect speaker. Refer to . NO >> GO TO 3. 3. PRE-AMP HARNESS CHECK 1. Disconnect audio unit connector M44 and audio amp. connector M113. 2. Check continuity between audio unit harness connector M44 (A) and audio amp. harness connector M113 (B). 3. Check continuity between audio unit harness connector M44 (A) and ground. Are the continuity test results as specified? YES >> GO TO 4. NO >> • Check connector housings for disconnected or loose terminals. • Repair harness or connector. 4. PRE-AMP SIGNAL CHECK Connector Terminals Condition Reference signal (+) (-) M113 11 27 Receive 12 28 ALNIA0727GB SKIA0177E A B Continuity Connector Terminal Connector Terminal M44 13 M113 8 Yes 14 24 15 7 16 23 A — Continuity Connector Terminal M44 13 Ground No 14 15 16 ALNIA0729GB |