|
Remove the blown fuse and measure
the resistance between the load side of the blown fuse and
the earth. Close the switches of all circuits which are
connected to this fuse. If the resistance is almost 0
Ω at this time, there is a short somewhere between
these switches and the load. If the resistance is not 0
Ω, there is no short at the present time, but a
momentary short has probably caused the fuse to blow. The
main causes of a short circuit are the
following.
- Harness being clamped by the vehicle body
- Damage to the outer casing of the harness due to
wear or heat
- Water getting into the connector or
circuitry
- Human error (mistakenly shorting a circuit,
etc.)
|