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AV-52 < COMPONENT DIAGNOSIS > [BASE AUDIO WITHOUT NAVIGATION] COMMUNICATION SIGNAL CIRCUIT (CONT-SAT) COMMUNICATION SIGNAL CIRCUIT (CONT-SAT) Description INFOID:0000000000964571 Satellite radio tuner and AV control unit are connected with a serial communication. They transmit the opera- Diagnosis Procedure INFOID:0000000000964572 1. CHECK CONTINUITY COMMUNICATION SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect satellite radio tuner connector and AV control unit connector. 3. Check continuity between satellite radio tuner harness connector terminals 9, 10 and AV control unit har- 4. Check continuity between satellite radio tuner harness connector terminals 9, 10 and ground. Is inspection result OK? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK COMMUNICATION SIGNAL 1. Connect satellite radio tuner connector and AV control unit connector. 2. Turn ignition switch ON. 3. Check signal between satellite radio tuner harness connector terminal 9 and ground. Is inspection result OK? YES >> GO TO 3. NO >> Replace satellite radio tuner. 3. CHECK COMMUNICATION SIGNAL Check signal between satellite radio tuner harness connector terminal 10 and ground. Is inspection result OK? YES >> Replace satellite radio tuner. NO >> Replace AV control unit. 9 - 29 : Continuity should exist. 10 - 30 : Continuity should exist. 9, 10 - Ground : Continuity should not exist. 9 - Ground SKIA9300J 10 - Ground SKIA9301J |