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LAN AV BRANCH LINE CIRCUIT LAN-143 < COMPONENT DIAGNOSIS > [CAN SYSTEM (TYPE 5)] C D E F G H I J K L B A O P N AV BRANCH LINE CIRCUIT Diagnosis Procedure INFOID:0000000003515650 1. CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the terminals and connectors of the AV control unit for damage, bend and loose connection (unit Is the inspection result normal? YES >> GO TO 2. NO >> Repair the terminal and connector. 2. CHECK HARNESS FOR OPEN CIRCUIT 1. Disconnect the connector of AV control unit. 2. Check the resistance between the AV control unit harness connector terminals. - Models with NAVI - Models without NAVI Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the AV control unit branch line. 3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the AV control unit. Refer to the following. AV-51, "AV CONTROL UNIT : Diagnosis Procedure" • BOSE audio without navigation: AV-218, "AV CONTROL UNIT : Diagnosis Procedure" • BOSE audio with navigation: AV-544, "AV CONTROL UNIT : Diagnosis Procedure" Is the inspection result normal? YES (Present error)>>Replace the AV control unit. Refer to the following. • Base audio without navigation: AV-156, "Removal and Installation" • BOSE audio without navigation: AV-412, "Removal and Installation" • BOSE audio with navigation: AV-903, "Removal and Installation" YES (Past error)>>Error was detected in the AV control unit branch line. >> Repair the power supply and the ground circuit. AV control unit harness connector Resistance ( Ω ) Connector No. Terminal No. M87 52 53 Approx. 54 – 66 AV control unit harness connector Resistance ( Ω ) Connector No. Terminal No. M85 86 87 Approx. 54 – 66 |