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AV-48 < COMPONENT DIAGNOSIS > [PREMIUM AUDIO (KING CAB)] FRONT DOOR SPEAKER 1. Connect audio unit connector and suspect speaker connector. 2. Turn ignition switch ACC. 3. Push “POWER” switch. 4. Check the signal between audio unit harness connector M64 Are the audio signal voltage readings as specified? YES >> Replace suspect speaker. Refer to . NO >> Replace audio unit. Refer to Connector Terminals Condition Reference signal (+) (-) M64 2 1 Receive 4 3 AWNIA1803ZZ SKIA0177E |