cannot scan it because of no communication?

2004 TOYOTA 4RUNNER
700,000 MILES
Avatar
TICO KOCK
  • MEMBER
  • 1 POST
Car runs good but cannot scan it because of no communication with scanner.
Aug 19, 2018 at 9:05 AM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
First make sure the scanner works on another car. Next check the OBD fuse under the hood. Here is a guide to help you with the fuse location and the wiring diagrams for the ALDL so you can see how then system works:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what you find.

Cheers, Ken
Images (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Aug 21, 2018 at 12:54 PM
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.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.