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AV U1278, U1279, U127A, U127B REAR LEFT DOOR SPEAKER AV-231 < COMPONENT DIAGNOSIS > [BOSE AUDIO WITHOUT NAVIGATION] C D E F G H I J K L M B A O P U1278, U1279, U127A, U127B REAR LEFT DOOR SPEAKER Description INFOID:0000000003901603 DTC Logic INFOID:0000000003901604 DTC DETECTION LOGIC Diagnosis Procedure INFOID:0000000003901605 1. PERFORM THE SELF-DIAGNOSIS 1. Delete the self-diagnosis results. Turn ignition switch OFF. 2. Turn ignition switch ON. perform the self-diagnosis again. 3. Check that the DTC is detected again. Is any DTC detected? YES >> Repair sound signal rear speaker LH circuit harness or connector. NO >> Refer to GI section. Refer to GI-35, "Intermittent Incident" . Part name Description REAR LEFT DOOR SPEAKER • Outputs sound signal from BOSE amp. DTC Display contents of CONSULT-III DTC Detection Condition Possible causes U1278 RL- SP/FL-WOOFER Sound signal rear speaker LH circuit is open. Check sound signal rear speaker LH U1279 RL- SP/FL-WOOFER Sound signal rear speaker LH circuit is shorted between Check sound signal rear speaker LH U127A RL- SP/FL-WOOFER Sound signal rear speaker LH circuit to ground is shorted. Check sound signal rear speaker LH U127B RL- SP/FL-WOOFER Sound signal rear speaker LH circuit to battery is shorted. Check sound signal rear speaker LH |