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Anti-Theft Horn

  1. Remove anti-theft horn. Connect battery positive lead to either terminal. Connect remaining terminal to ground. Anti-theft horn should operate. If operation is as specified, go to next step. If operation is not as specified, replace anti-theft horn.
  2. Check for continuity in White wire between anti-theft horn connector and body ECU 16-pin connector "D" terminal No. 3. See Fig 1. Continuity should exist at all times. Check for continuity in W hite/Black wire between anti-theft horn connector and ground. Continuity should exist at all times. If continuity is not as specified, repair wiring harness as necessary.
Fig 1: Identifying Body ECU Connector Terminals
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