Toyota Tundra Service Manual: Horn System

Parts Location

PARTS LOCATION

ILLUSTRATION

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Horn system

Symptom

Suspected Area

See page

Horn does not sound

HORN fuse

-

Low pitched horn assembly

High pitched horn assembly

Integration relay (HORN relay)

Spiral cable sub-assembly

Horn button wire sub-assembly*1

-

Cruise switch wire*2

-

Steering pad switch assembly*3

Horn button assembly

Harness or connector

-

  • *1: w/o Steering Pad Switch Assembly, w/o Cruise Control System
  • *2: w/o Steering Pad Switch Assembly, w/ Cruise Control System
  • *3: w/ Steering Pad Switch Assembly

System Diagram

SYSTEM DIAGRAM

    High Pitched Horn

    Integration Relay

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