Which fuse to check the OBD 2 for power?

2013 HONDA ACCORD
135,412 MILES • 3.5L • 6 CYL • 2WD • AUTOMATIC
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CASAMORSE
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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.
Mar 3, 2024 at 7:30 AM
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BORIS K
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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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Mar 4, 2024 at 6:26 AM
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CASAMORSE
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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.
Mar 7, 2024 at 9:55 AM
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BORIS K
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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Hello.

Glad you got the issue sorted.

Cheers, Boris
Mar 8, 2024 at 12:32 AM