The Short Loop Test is a simple test to determine if each component (Fence Transmitter, Receiver Collar and Boundary Wire) is functioning properly.

1. Disconnect the Boundary Wire and Ground Wire.
2. Cut approximately 10 feet of unused Boundary Wire and connect it to the Boundary Wire Terminals.
3. Attach the Test Light to the Receiver Collar.
4. Spread the Boundary Wire out into a circle. Set the Boundary Control Switch to B.
5. Set the Boundary Width Control knob to 10 and the Static Correction Level to level 2 or above.
6. If the Loop Indicator Light is not lit, then your fence Transmitter is not functioning properly. Contact the PetSafe Customer Care Center at 1-800-732-2677.
7. If the Loop Indicator Light is lit, disconnect one end of the Boundary Wire from the Boundary Wire Terminal.
8. If the loop alarm does not sound, The Fence Transmitter needs to be replaced. Contact the PetSafe Customer Care Center at 1-800-732-2677.
9. If the loop alarm does sound, plug the Boundary Wire back into the Boundary Wire Terminal.
10. Hold the Receiver Collar next to the 10 foot length of Boundary Wire. The Receiver Collar should beep about one foot away from the Boundary Wire. The Test Light should then flash as you hold the Receiver Collar closer to the Boundary Wire.
11. If Receiver Collar does not beep and the Test Light does not flash, replace the battery in the Receiver Collar. If it still does not beep and the Test Light does not flash, Contact the PetSafe Customer Care Center at 1-800-732-2677.
12. If the Receiver Collar beeps, there may be a complete or partial  break in the Boundary Wire. See the article "Finding Wire Breaks"

Or, you may use a Wire Break Locator to check your wire.