1997 Chevy Truck

1997 CHEVROLET TRUCK
242,000 MILES • V8 • 4WD • AUTOMATIC
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BHART4U
  • MEMBER
  • 2 POSTS
I installed a performance chip to the back side of my OBII port and believe that I shorted out the power wire as now I have no power to the OBII. I use a scan gauge to check my engine performance and now there is no power to this scan gauge. I hooked the scan gauge to another vehicle and it works fine. I have a repair manual but it doesn't have any electrical schematics that I can trace out the wiring. Is there a fuse or component (I hope not the computer) that I have blown and can replace? I have checked with a chevy dealership and they want an astronomical amount for a electrical schematic.
Jul 9, 2010 at 10:41 PM
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RACEFAN966
  • ✓Experienced Mechanic
  • 5,029 POSTS
Ok first off check fuse 7 in the fuse box inside the truck should be 25 amp. If this is good then check the purple wire for power at he data link. Let me know what you find.
Jul 10, 2010 at 2:18 AM
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BHART4U
  • MEMBER
  • 2 POSTS
The #7 fuse was blown as you suggested to look at.

thank You
Jul 10, 2010 at 5:15 AM
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2 LINSEY
  • ✓Experienced Mechanic
  • 287 POSTS
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