Before testing the water inlet valve,
unplug the refrigerator to avoid an electrical shock hazard.
The water inlet valve is located behind your
refrigerator. Find the water supply line coming into the valve
and turn it off at the source (typically under the sink).
Disconnect the supply line. Remove the screws that secure
the inlet valve in place.
The water inlet valve is connected by two
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.