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Home >> Lexus >> 1999 >> RX 300 AWD >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Systems >> Component Tests >> Anti-Theft Horn

Anti-Theft Horn

Disconnect anti-theft horn connector (located in right rear corner of engine compartment). Connect battery positive lead to terminal No. 1 (Light Green/Black wire) and negative battery lead to horn body. See WIRING DIAGRAMS . If horn does not operate, replace horn. If horn operates, repair or replace wire harness and connectors between anti-theft horn, body control ECU and ground.