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© 1998 Maytag Corporation
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
2-2
ELECTRICAL TESTS
Warning - Always shut off
electrical power to the
unit before beginning any
service repair procedures.
Water Valve Test
Check the water valve for electrical continu-
ity. This check should be made with the elec-
trical supply disconnected from the washer.
Remove the wire harness from the water valve
terminals and place the ohm meter probes on
the terminals of the water valve. The water
valve solenoid coil should have a resistance
between 500-1000 ohms. If no ohms are
shown on the display of the electrical test
meter, the solenoid coil has an open winding
and the valve should be replaced. The ther-
mistor in the water valve changes in resistance
in direct relationship to water temperatures.
To monitor the performance of the thermistor,
run a partial hot water fill and check the ohm
resistance of the thermistor circuit. Then, run
a cold water fill and measure the resistance
again. There should be a notable difference
in the resistance readings. To check the ohm
resistance, pull the P2 wire harness connec-
tor off the machine control and locate the
P2(5) and P2(6) leads in the connector
(Figure 2-3).
Voltage Checks
Generally, these checks will consist of taking
readings at the wall receptacle to determine
the availability of voltage to the product. Volt-
age checks on individual components of a
product are not recommended due to the
possibility of electrical shock. Component part
testing is best accomplished through conti-
nuity checks with an Appliance Test Meter
(See Electrical Test Equipment).
NOTE: Use of the meter on voltage higher
than the indicated range may cause perma-
nent damage to the meter. To prevent dam-
age, first select the highest range and then
lower the range for readings which fall within
the lower scale.
Set up meter for use as follows:
1. Turn selector knob to desired meter func-
tion and appropriate range.
2. Plug black lead into socket marked black
(-).
3. Plug red lead into socket marked red (+).
4. Place test leads into receptacle to deter-
mine voltage available.
Wax Motor Check - Door Lock
Mechanism
Check the wax motor for proper resistance.
This check should be made with the electrical
supply disconnected from the washer. Re-
move the wire harness from the wax motor
terminals and place the ohm meter probes on
the terminals of the wax motor. The wax mo-
tor should have a resistance of approximately
1900 ohms at room temperature. To check
wax motors through console, see section:
Machine Control page 2-5.
Grounded Components
When performing service diagnostics, re-
placements and repairs, always check to de-
termine whether all ground wires linking
panel and components are reattached if
removed.