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AV STEERING SWITCH AV-179 < DTC/CIRCUIT DIAGNOSIS > [MID AUDIO WITHOUT BOSE] C D E F G H I J K L M B A O P YES >> GO TO 3. NO >> Repair or replace harness or connectors. 3. CHECK COMBINATION SWITCH Check continuity between combination switch connectors M30 and M149. Is the inspection result normal? YES >> GO TO 4. NO >> Replace spiral cable. Refer to SR-15, "Removal and Installation" 4. CHECK HARNESS BETWEEN COMBINATION METER AND AV CONTROL UNIT 1. Disconnect AV control unit connector M125. 2. Check continuity between combination meter connector M24 and AV control unit connector M125. 3. Check continuity between combination meter connector M24 and ground. Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace harness or connectors. 5. CHECK AV CONTROL UNIT VOLTAGE 1. Connect combination meter connector M125 and AV control unit connector M125. 2. Turn ignition switch ON. 3. Check the voltage between the terminals of AV control unit connector M125. Is the inspection result normal? YES >> Replace combination meter. Refer to MWI-82, "Removal and Installation" NO >> Replace AV control unit. Refer to AV-187, "Removal and Installation" . Combination switch Continuity Connector Terminal Connector Terminal M30 24 M149 14 Yes 31 15 33 17 Combination meter AV control unit Continuity Connector Terminal Connector Terminal M24 14 M125 38 Yes 15 48 16 47 Combination meter Ground Continuity Connector Terminal M24 14 — No 15 16 AV control unit M125 Voltage (Approx.) (+) ( −) Terminal Terminal 38 47 5.0 V 48 |