A circuit consists of the power supply, switch, relay, load, ground, etc. There are various methods to check a circuit including an overall check, voltage check, short-circuit check and continuity check. Each of these methods is briefly described.
Short Circuits Check Flowchart:
Short Circuit Check
A blown fuse indicates that a circuit has shorted. The circuit responsible can be determined by the procedures outlined above.
Short Circuits Check (A):
Figure A
Short Circuits Check (B):
Figure B
Short Circuits Check (C):
Figure C