Horn System
NOTICE:
When disconnecting the cable from the negative (-) battery terminal, initialize the following system after the cable is reconnected.
System Name | See Procedure |
|---|---|
Back Door Closer System |
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Power Back Door System |
1. EXPRESSIONS OF IGNITION SWITCH
The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section.
Expression | Switch Type |
|
|---|---|---|
Ignition Switch (Position) | Engine Switch (Condition) |
|
Ignition Switch off |
LOCK |
Off |
Ignition Switch ON |
ON |
On (IG) |
Ignition Switch ACC |
ACC |
On (ACC) |
Engine Start |
START |
On (Start) |
System Diagram SYSTEM DIAGRAM
Problem Symptoms Table PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, 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 SYSTEMSymptom | Suspected Area | See page |
|---|---|---|
Horn does not sound |
HORN fuse |
- |
HORN relay (Engine room junction block assembly) |
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|
Horn button assembly |
|
|
Steering pad switch assembly |
|
|
Spiral cable sub-assembly |
|
|
Wire harness |
- |
|
Horn sounds all the time |
HORN relay (Engine room junction block assembly) |
|
Horn button assembly |
|
|
Steering pad switch assembly |
|
|
Spiral cable sub-assembly |
|
|
Wire harness |
- |
|
Low pitched horn operates but high pitched horn does not operate |
High pitched horn assembly |
|
Wire harness |
- |
|
High pitched horn operates but low pitched horn does not operate |
Low pitched horn assembly |
|
Wire harness |
- |
Test yourself
A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.