HEXA

ELECTRICAL

326

CHECKING FUSES:

If any electrical unit in the vehicle has stopped

functioning, fuses should be checked first.

A blade type fuse has test taps provided to allow

checking of the fuse itself without removing it from

the fuse block. The fuse is okay if the test light

comes on when its one lead is connected to the

test taps (

one at a time

) and the other lead is

grounded. Remember to turn the ignition switch to

ON to ensure all circuits are live.



CAUTIONS IN EVENT OF BLOWN FUSE

When a fuse is blown, there are two probable

causes. One is that it is blown due to flow of

current exceeding its rating. The other is that it is

blown due to repeated on/off current flowing

through it. Which of these two causes were

responsible for the fuse to be blown can be

determined by visual check as described below.

1. Fuse blown due to current exceeding rating

The illustration shows the state of a fuse blown

due to this cause. In this case, do not replace the

fuse with a new one quickly since a current heavy

enough to blow the fuse has flowed through it.

First, check the circuit for shorts and check for

abnormal electric parts. After correcting shorts or

replacing parts, use only a fuse of the same

capacity as a replacement. Never use a fuse of

larger capacity than the original fuse. If a larger

capacity fuse is used, electric parts or wiring could

be damaged, or could start a fire.

2. Fuse blown due to repeated turning current on

and off:

The illustration shows the state of a fuse blown

due to repeated current on/off. Normally, this type

of problem occurs after a fairly long period of use

and is less frequent than above. In this case,

simply replace with a new fuse of the same

capacity.