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AV POWER SUPPLY AND GROUND CIRCUIT AV-37 < DTC/CIRCUIT DIAGNOSIS > [AUDIO SYSTEM] C D E F G H I J K L M B A O P DTC/CIRCUIT DIAGNOSIS POWER SUPPLY AND GROUND CIRCUIT AUDIO UNIT AUDIO UNIT : Diagnosis Procedure INFOID:0000000010502034 Regarding Wiring Diagram information, refer to 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. 2. Disconnect audio unit connector M10. 3. Check voltage between audio unit connector M10 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. 2. Disconnect audio unit connector M10. 3. Check continuity between audio unit connectors and ground. Is the inspection result normal? YES >> Inspection End. NO >> Repair or replace harness or connectors. Terminal No. Signal name Fuse No. 7 Ignition power supply 4 (10A) 19 Battery power supply 19 (20A) Audio unit Ground Condition Voltage (Approx.) Connector Terminal M10 7 — Ignition switch: ON Battery voltage 19 Ignition switch: OFF Audio unit Ground Continuity Connector Terminal M10 20 — Yes |