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Home >> Lexus >> 2000 >> LS 400 >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control Systems >> Component Tests >> Anti-Theft Horn

Anti-Theft Horn

Disconnect anti-theft horn connector (located on right side of engine compartment, near shock tower). Connect battery positive lead to terminal No. 1 (White wire) and negative battery lead to terminal No. 2 (White/Black wire). 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.