Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
 

 


 
Go Back   Toyota Yaris Forums - Ultimate Yaris Enthusiast Site > Second Generation Toyota Yaris Main Rooms > Regional Forums > Rocky Mountains / Great Plains
  The Tire Rack

Reply
 
Thread Tools Display Modes
Old 09-14-2020, 05:16 PM   #1
Yaris Dad
I've made a post!
 
Drives: 2012 Yaris Hatchback
Join Date: Sep 2020
Location: Colorado
Posts: 1
Angry Replaced Horn Relay - Still Not Working

Hi all - hoping someone can help me.

I bought a new horn relay because there was no clicking when pressing the horn. Still not working, no clicking.

Anyone else have any idea why this would be the case?

Thank you!

Mike
__________________
2012 Yaris Hatchback
Yaris Dad is offline   Reply With Quote
Old 09-14-2020, 11:15 PM   #2
stidnam
 
Drives: Starlet
Join Date: Nov 2017
Location: Australia
Posts: 104
The power source for the horn is the same as as the trigger for the relay. Therefore, my first recommendation is to check the horn fuse if you haven't done so already.

If it's not the fuse and it's not the relay, then it can only be a number of other things

1. The clock spring / spiral cable is damaged
2. The actual horn switch is disconnected or isn't completing the earth properly when you press the horn
3. There's a break in the circuit somewhere upstream between the fuse and the steering pad.
4. There's a break in the circuit between the fuse and the actual horn
5. The horn is broken
6. The earth to the horn is disconnected

Each one of those is easily testable. I'd start by checking if you have power going to the relay first - should have 12v power on two of the poles at all times. I'd then test the circuit to see if you get power through the relay when triggered by using a multimeter as opposed to listening if it clicks. If you have power then I'd focus on the clock spring and actual horn pad.

Last edited by stidnam; 09-15-2020 at 08:53 AM.
stidnam is online now   Reply With Quote
Old 09-15-2020, 08:28 AM   #3
CrankyOldMan
2ZR swap. DO IT! Ask how!
 
CrankyOldMan's Avatar
 
Drives: 09 Meteoric Metallic HB
Join Date: Feb 2011
Location: West Michigan
Posts: 2,158
I've had issues with mine ever since I took the front end apart to swap the engine, still haven't resolved it.

The horn relay is part of the big black fuse/relay device in the engine bay fuse box. Real pain to test that one because the pins are tiny and underneath the fuse block.

The horn earth/ground is connected directly to the unibody. If there isn't adequate continuity between the horn body and the battery through all the bolted connections, it won't work.
CrankyOldMan is offline   Reply With Quote
Reply

Tags
electrical, horn, relay

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY aftermarket steering wheel install with horn and airbag delete tmontague Performance Modifications 19 11-30-2018 12:19 PM
Horn Not Working nacer DIY / Maintenance / Service 5 07-25-2014 08:57 AM
Help! Turn Signals and Horn Stopped working kashanf DIY / Maintenance / Service 3 05-28-2014 05:20 PM
Problems after horn install Astroman DIY / Maintenance / Service 14 04-07-2014 05:15 PM
Wireless key entry stopped working modmonster DIY / Maintenance / Service 9 03-31-2014 11:34 AM


All times are GMT -4. The time now is 05:59 AM.




YarisWorld
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.