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Home >> Toyota >> 2004 >> Tundra Base, Standard >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Systems - Diagnostics >> Circuit Inspection >> Horn Circuit >> Inspection Procedure

Inspection Procedure

  1. Check horn. 
    1. NG: Replace horn. 
    2. OK: Go to next step 
  2. Check horn switch. 
    1. NG: Replace horn switch. 
    2. OK: Go to next step 
  3. Check wire harness and connector between horn and body ECU, and body ECU and horn switch (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. NG: Repair or replace wire harness and connector. 
    2. OK: Proceed to next circuit inspection shown on problem symptoms table (See  PROBLEM SYMPTOMS TABLE  ). 
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