Horn relay

2003 TOYOTA COROLLA
200,000 MILES
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LORI HARGROVE DANIELS
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  • 1 POST
How do you test to see if the relay is good?
Jan 3, 2019 at 9:40 AM
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KENW1
  • ASE Certified Mechanic
  • 213 POSTS
  • ASE Certified Mechanic
Hello, thanks for visiting 2CarPros. To test the relay you will need a fused jumper wire and a non fuse one. You will connect the fused wire to the positive battery terminal and the other end to pin 1 of the relay. The other jumper wire will go to the negative terminal of your battery and pin 2 of the relay.

You'll then need to use a multi meter set to continuity or the lowest ohms scale and place one probe on pin 3 and the other on pin 5. You should have continuity or 0 ohms resistance. I'll post pictures below showing the terminals.
Jan 3, 2019 at 4:10 PM
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