Whirlpool WFW94HEXW2 Troubleshooting Manual page 16

FOR SERVICE TECHNICIAN'S USE ONLY
12. When the test shows "C05 & C08" on the
display, the motor is powered and line voltage
from the CCU should be present across pins
1 & 2 of connector MS2.
 If line voltage is present, replace the MCU.
 If line voltage is not present, replace the CCU.
13. Unplug washer or disconnect power.
14. Reassemble all parts and panels.
15. Perform the "Quick Diagnostic Test"
on page 6 to verify repair.
TEST #4: Door Lock System
Perform the following checks if the washer
does not lock (or unlock).
1. Check lid lock mechanism for obstruction
or binding. Repair as necessary.
2. Unplug washer or disconnect power.
3. Remove top panel to access machine
electronics.
4. Visually check that the DL3, DLS2, and
DCS3 connectors are inserted all the way into
the CCU. Refer to CCU diagram on page 13.
 If visual check passes, go to step 5.
 If any of the connectors are not inserted
properly, reconnect and retest door lock.
5. Referring to the chart below, disconnect
the specified connectors from the CCU. With
an ohmmeter, verify resistance values listed
in the chart. NOTE: To measure the door lock
switch in the "locked" position, plug in washer
or reconnect power. Press the POWER button,
select any cycle, and then press START.
Actuation of the door lock solenoid should be
heard. At that point, unplug the washer and
disconnect DLS2 from the CCU and measure
resistance across pins 1 & 2.
DOOR LOCK RESISTANCE
Component Resistance
Door Closed = Continuity
Door Switch
Door Open = Open Circuit
Lock Coil = 50–74 Ω
Door Lock
Coils
Lock Coil = 50–74 Ω
Door Lock Locked = Continuity
Switch Unlocked = Open Circuit
 If resistance values are good, go to step 6.
PAGE 16
 If any of the measurements do not match the
values shown in the chart, check the harness
of the suspected component between the
CCU and door lock mechanism for continuity.
 If the harness and connections are
good, replace the door lock mechanism.
IMPORTANT: To minimize risk of damage
to door lock/switch wires, remove the door
lock mechanism screws before removing
the front panel.
6. If the preceding steps did not correct the
lock problem, replace the CCU and retest door
lock mechanism.
 Unplug washer or disconnect power.
 Replace the CCU.
 Reassemble all parts and panels.
 Perform the "Quick Diagnostic Test"
on page 6 to verify repair.
TEST #5: Drum Light (Steam Models)
This test is performed if the drum LED does
not light.
1. On Whirlpool models, pressing the "Drum
Light" button on the console should toggle the
button indicator on and off.
 If the button indicator does not turn on, go
to TEST #2 – "Some buttons do not light
indicators" on page 14.
 If the button indicator toggles on and off,
go to step 2.
2. Unplug washer or disconnect power.
3. Remove the top panel to access CCU
and user interface (UI).
4. Verify the drum light connector (P13)
is securely connected to the UI. See Figure 5.
5. Check harness and connections between
the drum light and the UI.
 If the connections are OK, go to step 6.
 If not, repair or replace as needed.
Contacts
6. Unplug the drum light connector (P13)
Measured
from the UI.
DCS3-1 DCS3-3
7. Plug in washer or reconnect power.
DL3-1 DL3-2
8. On Whirlpool models, press the "Drum
DL3-2 DL3-3
Light" button on the console until the button
DLS2-1 DLS2-2
indicator is on. On Maytag models, press and
hold the "Steam for Stains/Drum Light" button
on the console to activate the LED circuit.
9. With a multimeter set to milliamps, measure
the current across UI connector P13, pins 1
DO NOT REMOVE OR DESTROY