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AV-68 < COMPONENT DIAGNOSIS > [AUDIO SYSTEM] POWER SUPPLY AND GROUND CIRCUIT POWER SUPPLY AND GROUND CIRCUIT AV CONTROL UNIT INFOID:0000000005146301 Regarding Wiring Diagram information, refer to . 1. CHECK FUSES Check that the following AV control unit fuses are not blown. Are the fuses OK? YES >> GO TO 2. NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. 2. POWER SUPPLY CIRCUIT CHECK 1. Disconnect AV control unit connectors M42 and M45. 2. Check voltage between the AV control unit connectors M42 and M45 and ground. Are the voltage results as specified? YES >> GO TO 3. NO >> • Check connector housings for disconnected or loose terminals. • Repair harness or connector. 3. GROUND CIRCUIT CHECK Unit Terminals Signal name Fuse No. AV control unit 19 Battery power 31 66 68 7 Ignition switch ACC or ON 4 69 79 Ignition switch ON or START 12 (+) (-) OFF ACC ON Connector Terminal M42 7 Ground 0V Battery Battery 19 Ground Battery Battery Battery M45 66 Ground Battery Battery Battery 68 Ground Battery Battery Battery 69 Ground 0V Battery Battery 79 Ground 0V 0V Battery AWNIA1554ZZ |