Before testing the water inlet valve, unplug
the refrigerator to avoid an electrical shock hazard.
The water inlet valve is located at the lower
rear of the refrigerator or freezer. Locate the water supply line
coming into the valve and turn it off at the source (typically
under the sink). Disconnect the supply line from the valve and
place it into a container to catch any water the may spill out.
Remove the screws securing the inlet valve in place.
The water inlet valve is connected by two wires
or four wires. Label the wire placement on the water inlet valve
before disconnecting the wires. The wires are connected to the
terminals with slip on connectors. Firmly pull the connectors
off of the terminals (do not pull on the wire). You may need to
use a pair of needle-nose pliers to remove the connectors. Inspect
the connectors and the terminals for corrosion. If the connectors
are corroded they should be replaced.
Before testing the water inlet valve, unplug
the refrigerator to avoid an electrical shock hazard. 
