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LAN HVAC BRANCH LINE CIRCUIT LAN-243 < DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 11)] C D E F G H I J K L B A O P N HVAC BRANCH LINE CIRCUIT Diagnosis Procedure INFOID:0000000010093735 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 A/C auto amp. 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 A/C auto amp. 2. Check the resistance between the A/C auto amp. harness connector terminals. Is the measurement value within the specification? YES >> GO TO 3. NO >> Repair the A/C auto amp. branch line. 3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the A/C auto amp. Refer to the following. HAC-77, "A/C AUTO AMP. : Diagnosis Procedure" • With 7 inch display: HAC-202, "A/C AUTO AMP. : Diagnosis Procedure" Is the inspection result normal? YES (Present error)>>Replace the A/C auto amp. Refer to the following. • Without 7 inch display: VTL-25, "Removal and Installation" • With 7 inch display: VTL-89, "Removal and Installation" YES (Past error)>>Error was detected in the A/C auto amp. branch line. >> Repair the power supply and the ground circuit. A/C auto amp. harness connector Resistance ( Ω ) Connector No. Terminal No. M50 1 2 Approx. 54 – 66 |