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Which fuse to check the OBD 2 for power?

Tiny
CASAMORSE
  • MEMBER
  • 2013 HONDA ACCORD
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 135,412 MILES
We took our car into Safelite to replace the windshield. When they connected their scanner to the OBD2 port they could not get a reading. So, first of all I need to know which pin to check on the port for power and I need to know which fuse is associated with it. Thank you for your time.
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Sunday, March 3rd, 2024 AT 7:30 AM

3 Replies

Tiny
BORIS K
  • MECHANIC
  • 799 POSTS
Hello,

First check that fuse F21(10A) in under-hood fuse block is intact.

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

At the DLC pin 16, white wire, has constant 12V supplied by fuse F21.
At the DLC pins 4+5, black wire, are the ground

You can check for power and ground at the DLC using either a voltmeter or a test light.

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

Cheers, Boris
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Monday, March 4th, 2024 AT 6:26 AM
Tiny
CASAMORSE
  • MEMBER
  • 2 POSTS
Hey Boris, hope you are well. It turns out there was a problem with their scanner. I bought my own scanner and it connected immediately. Thanks for your time.
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Thursday, March 7th, 2024 AT 9:55 AM
Tiny
BORIS K
  • MECHANIC
  • 799 POSTS
Hello.

Glad you got the issue sorted.

Cheers, Boris
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Friday, March 8th, 2024 AT 12:32 AM

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