Short circuit testing with voltmeter

— Remove blown fuse from circuit.

— Disconnect harness connector from circuit's load or component.

Most fuses power more than one component. Be sure alt components are disconnected when checking for a short circuit.

Using a digital multimeter, connect test leads across fuse terminals. Make sure power is present in circuit. If necessary turn key on.

— If voltage is present at voltmeter, there is a short to ground.

— If voltage is not present, work from wire harness nearest to fuse/relay panel and move or wiggle wires while observing meter. Continue to move down harness until meter displays a reading. This is the location of short to ground.

Visually inspect wire harness at this point for any faults. If no faults are visible, carefully slice open harness cover or wire insulation for further inspection. Repair any faults found.

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