Short-Circuit to Supply Voltage. Permanent Faults

Short-circuit to supply voltage. Permanent faults







A short-circuit between a cable and supply voltage is often indicated by the loss of a function or a fuse blowing when voltage is passed through the cable.

Repair wiring and cable terminals

Checks:
- Use a voltmeter to take readings at various points in the circuit while operating switches and sensors.

Voltmeter readings will depend on which circuit is tested and the status of switches and sensors, Use the wiring diagram to determine the correct voltage in the circuit.
Use an ohmmeter between the suspect cables to detect short-circuits between them.
The ohmmeter should read infinite resistance between cables not connected to each other in the circuit.
Check pins and terminals particularly for this fault.