Obd power supply

2002 CHEVROLET BLAZER
156,199 MILES • 4.0L • V6 • 2WD • AUTOMATIC
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JOLENE BRANDES
  • MEMBER
  • 1 POST
OBD fuses.
Dec 17, 2021 at 11:50 AM
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.
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AL514
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 5,479 POSTS
Hello, I am assuming you have no power at the Data Link Connector?
The first diagram is the power feed on Pin 16 and the second diagram are the 2 ground connections for it. If you have no communication with a scan tool, that can be a whole different issue altogether.

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

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

https://www.2carpros.com/articles/how-to-use-a-voltmeter
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Dec 17, 2021 at 12:40 PM
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