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OBD2 does not link with vehicle

Tiny
MARTIND84
  • MEMBER
  • 2006 TOYOTA COROLLA
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 300,000 MILES
Can't verify spark from any plugs. Verified fuel to fuel rail. Connected code reader tool but wouldn't link to car. Unhooked battery for over 30 minutes and hooked it back up and tried again. Still won't link.
Wednesday, July 24th, 2019 AT 6:10 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
Welcome to 2CarPros.

If the DLC won't connect with the scanner, the first thing I need checked is the power supply to the DLC port. Pin number 16 should be hot all the time. There is a 7.5 amp fuse in the instrument panel fuse box (left side) that provides power the DLC. That can cause a bunch of different issues. I attached a pic of what I am talking about.

Here are a few links you may or may not need.

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

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

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

_________________________

Let me know if it is good or bad.

Take care,
Joe
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Thursday, July 25th, 2019 AT 6:58 PM
Tiny
MARTIND84
  • MEMBER
  • 1 POST
No 7.5 a fuse
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Sunday, July 28th, 2019 AT 11:40 AM

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