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AV COMMUNICATION SIGNAL CIRCUIT (CONT-SAT) AV-121 < DTC/CIRCUIT DIAGNOSIS > [WITHOUT NAVIGATION] C D E F G H I J K L M B A O P COMMUNICATION SIGNAL CIRCUIT (CONT-SAT) Description INFOID:0000000005246842 Satellite radio tuner and AV control unit are connected with a serial communication. They transmit the opera- Diagnosis Procedure INFOID:0000000005246843 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 and AV control unit harness connector. 4. Check continuity between satellite radio tuner harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK COMMUNICATION SIGNAL (SAT → CONT) 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 and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Replace satellite radio tuner. Refer to 3. CHECK COMMUNICATION SIGNAL (CONT → SAT) Check signal between satellite radio tuner harness connector and ground. Satellite radio tuner AV control unit Continuity Connector Terminals Connector Terminals B236 9 M206 130 Existed 10 122 Satellite radio tuner Ground Continuity Connector Terminals B236 9 Not existed 10 (+) ( − ) Condition Reference value Satellite radio tuner Connector Terminal B236 9 Ground When satellite radio mode is SKIA9300J |