Which fuse for the OBD2 data port?

Tiny
BRUTOO61
  • MEMBER
  • 2010 TOYOTA RAV4
  • 3.5L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
Vehicle OBD system is unresponsive. ECU fuse powers OBD system. The fuse is good and everything is working. Which port on the OBD plug is supposed to be hot?
Wednesday, December 11th, 2024 AT 6:24 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,313 POSTS
The two brown wires on the connector are ground so I would check those along with the power source. This guide can help you check the power and ground connections. Also, check for power at the OBD fuse 7.5 amp. The blue wire in the connector is power.

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

Also, check the code reader on another car to make sure it works. Check out the images (below). Let us know how it goes.
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Wednesday, December 11th, 2024 AT 12:12 PM

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