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AV-28 < DTC/CIRCUIT DIAGNOSIS > [BASE AUDIO] POWER SUPPLY AND GROUND CIRCUIT 1. CHECK FUSE Check that the following fuses are not blown. Are the fuses blown? YES >> Replace the blown fuse after repairing the affected circuit. NO >> GO TO 2. 2. CHECK POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. ® control unit connector B141. 3. Check voltage between Bluetooth ® control unit connector B141 and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace harness or connectors. 3. CHECK GROUND CIRCUIT 1. Turn ignition switch OFF. ® control unit connector B141 and ground. Is the inspection result normal? YES >> Inspection End. NO >> Repair or replace harness or connectors. MICROPHONE INFOID:0000000010247113 Regarding Wiring Diagram information, refer to 1. CHECK POWER SUPPLY CIRCUIT 1. Turn ignition switch ON. 2. Check voltage between microphone connector R8 and ground. Terminal No. Signal name Fuse No. 1 Battery power supply 29 (20A) 2 ACC power supply 4 (10A) 3 Ignition power supply 12 (10A) Bluetooth ® control unit Ground Condition Voltage (Approx.) Connector Terminal B141 1 — Ignition switch: OFF Battery voltage 2 Ignition switch: ON 3 Bluetooth ® control unit Ground Continuity Connector Terminal B141 4 — Yes 20 Microphone Ground Value (Approx.) Connector Terminal R8 4 — 5V |