![]() If you click on the picture below and enlarge it it is much easier to read. That is the location of the fuse in the fuse box. On the fuse box legend, just to the right of the blown fuse is a fuse location marked CIG LTR, 15A. I have done this so many times that I went straight to the blown Lighter fuse in the underhood fuse box. So if you have an Avalanche, Escalade, Silverado, Sierra, Suburban, Tahoe or Yukon this applied to your vehicle as well. Once you learn the lesson the hard way, you don’t forget.Īs I stated earlier this particular vehicle is a 2005 Cadillac Escalade, but this relates to Cadillac, Chevrolet and GMC full sized Trucks and SUVs between 20 Classic series. Yes, I have had this happen to me as well. Unfortunately many times a technician is thrown off by this and starts looking for problems with the data communication lines. Not a big deal if you know your tool and realize you need to check those circuits. When this condition is encountered you generally end up at a screen that states that the module will not communicate. Many scan tools now have their own battery supply. ![]() therefore if the scan tool will not power up there is a basic problem with power or ground to the DLC. The Tech 2 makes it simple because the tool does not have it’s own battery supply. Although the vehicle I am working on is a 2005 Cadillac Escalade, this information is relevant to many OBD2 vehicles.
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