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Circuit Protection - Fuses

Special Tools

EL-39200 Digital Multimeter (DMM)

For equivalent regional tools, refer to Special Tools .


8786

The fuse is the most common method of an automotive wiring circuit protection. Whenever there is an excessive amount of current flowing through a circuit the fusible element will melt and create an open or incomplete circuit. Fuses are a one time protection device and must be replaced each time the circuit is overloaded. To determine if a fuse is open, remove the suspected fuse and examine if the element in the fuse is broken (2). If not broken (1), also check for continuity using a Digital Multimeter (DMM) or a continuity tester. If the element is broken or continuity is suspect, replace the fuse with one of equal current rating.

Fuse Types

Current Rating Amperes

Colour

Auto Fuses, Mini Fuses

2

Grey

3

Violet

5

Tan

7.5

Brown

10

Red

15

Blue

20

Yellow

25

White or Natural

30

Green

Maxi Fuses

20

Yellow

30

Lamp Green

40

Orange or Amber

60

Blue

50

Red

J-Case Fuses

20

Blue

30

Pink

40

Green

50

Red

60

Yellow

Midi Fuses

80

Black

Mega Fuses

100

Black

150

Black

200

Black

   


© Copyright Chevrolet. All rights reserved
   


© Copyright Chevrolet. All rights reserved