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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 170 (Wiring Systems - Testing, Diagnosis & Repair) >> Diagnostic Information and Procedures >> Testing for Short to Ground >> Fuse Powering Several Loads

Fuse Powering Several Loads

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Review the system schematic and locate the fuse that is open.
  2. Open the first connector or switch leading from the fuse to each load.
  3. Connect a DMM across the fuse terminals (be sure that the fuse is powered).
    • When the DMM displays voltage the short is in the wiring leading to the first connector or switch.
    • If the DMM does not display voltage go to the next step.
  4. Close each connector or switch until the DMM displays voltage in order to find which circuit is shorted.
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