GM Corsica/Beretta 1988-1996 Repair Guide

Fuses Block and Fuses

Print

See Figures 1 and 2

Fuses protect all the major electrical systems in the car. In case of an electrical overload, the fuse melts, breaking the circuit and stopping the flow of electricity.

If a fuse blows, the cause should be investigated and corrected before the installation of a new fuse. This, however, is easier to say than to do. Because each fuse protects a limited number of components, your job is narrowed down somewhat. Begin your investigation by looking for obvious fraying, loose connections, breaks in insulation, etc. Use the techniques outlined at the beginning of this section. Electrical problems are almost always a real headache to solve, but if you are patient and persistent, and approach the problem logically (that is, don't start replacing electrical components randomly), you will eventually find the solution.

Each fuse block uses miniature fuses (normally plug-in blade terminal-type for these vehicles) which are designed for increased circuit protection and greater reliability. The compact plug-in or blade terminal design allows for fingertip removal and replacement.



Click image to see an enlarged view

Fig. Fig. 1: There are generally four types of fuses used in these vehicles

Although most fuses are interchangeable in size, the amperage values are not. Should you install a fuse with too high a value, damaging current could be allowed to destroy the component you were attempting to protect by using a fuse in the first place. The plug-in type fuses have a volt number molded on them and are color coded for easy identification. Be sure to only replace a fuse with the proper amperage rated substitute.



Click image to see an enlarged view

Fig. Fig. 2: Fuse current rating and color code chart

A blown fuse can easily be checked by visual inspection or by continuity checking.

The fuse block is located on the lower left side of the instrument panel. To access the fuse panel, open the driver's side door. Pull off the fuse panel cover to get to the fuses. Spare fuses and a fuse puller should always be kept here. Various convenience connectors, which snap-lock into the fuse block, add to the serviceability of this unit.

REPLACEMENT



See Figures 3, 4, 5, 6, 7, 8 and 9

  1. Locate the fuse for the circuit in question.
  2.  

When replacing the fuse, always use a replacement fuse of the same amperage value. NEVER use one with a higher amperage rating.

Click image to see an enlarged view

Fig. Fig. 3: On some vehicles, you may have to remove a cover for access to the main fuse block



Click image to see an enlarged view

Fig. Fig. 4: The fuse panel cover has a label with the fuse designations on it

  1. Check the fuse by pulling it from the fuse block and observing the element. If it is broken, install a replacement fuse the same amperage rating. If the fuse blows again, check the circuit for a short to ground or faulty device in the circuit protected by the fuse.
  2.  



Click image to see an enlarged view

Fig. Fig. 5: Locate the fuse which needs to be checked ...



Click image to see an enlarged view

Fig. Fig. 6: ... then pull it out of the fuse block



Click image to see an enlarged view

Fig. Fig. 7: Fuse locations and component identification



Click image to see an enlarged view

Fig. Fig. 8: After you pull the fuse from the block, check the element



Click image to see an enlarged view

Fig. Fig. 9: Visual examination will reveal a blown fuse, but it should not be replaced until repairs are made

  1. Continuity can also be checked with the fuse installed in the fuse block with the use of a test light connected across the 2 test points on the end of the fuse. If the test light lights, replace the fuse. Check the circuit for a short to ground or faulty device in the circuit protected by the fuse.
  2.  

 
label.common.footer.alt.autozoneLogo