Fifth relay in in the relay control box not working properly

140,000 MILES • 3.2L • 6 CYL • 2WD • AUTOMATIC
Avatar
CJELINGER
  • MEMBER
  • 1 POST
Fifth relay in in the relay control box (K40) will not engage while trying to start the engine.
Jul 8, 2021 at 8:10 AM
Avatar
SQM
  • ✓Experienced Mechanic
  • 6,383 POSTS
Hello,

Are your trying to work on the secondary air injection relay? Does the relay make any noise?
Does is giving you an error code? Here is a guide that will help with getting codes if you need it:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

These K40 relays are a common issue with no start situations.
This video might be helpful:

https://youtu.be/Xg7sLEOUdko

Please let me know.
Thanks.
Jul 8, 2021 at 1:14 PM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle