Maytag W10393006 Service Manual page 12

FOR SERVICE TECHNICIAN'S USE ONLY
 If there is continuity, go to step 6.
 If there is no continuity, disconnect the
white wire of the main harness from the
power cord at the location illustrated in
Figure 6. Test the continuity of the power
cord neutral wire as illustrated in Figure 7.
If an open circuit is found, replace the
power cord. Otherwise, go to step 6.
6. In a similar way, check for continuity
between the L1 terminal of the plug and P9-2
(black wire) on the CCU.
 If there is continuity, go to step 8.
 If there is no continuity, check the continuity
of the power cord in a similar way to that
illustrated in Figure 7, but for power cord's
L1 wire.
 If an open circuit is found, replace the power
cord. Otherwise, replace the main harness.
7. Visually check that ALL connectors are fully
inserted into the CCU.
8. Visually check that ALL connectors are fully
inserted into the UI.
9. Reassemble all parts and panels.
10. Plug in dryer or reconnect power.
11. Perform steps under "Install Diagnostics",
page 5, to verify repair.
TEST #3: Motor Circuit
This test will check the wiring to the motor
and the motor itself. The following items are
part of this motor system:
Part of Motor System
Drum belt
Door switch
Harness/connection
Thermal fuse
Drive motor
Belt switch
Centrifugal switch
Machine control electronics
NOTE: Refer to Strip Circuit on page 22
to diagnose drive motor.
PAGE 12
1. Unplug dryer or disconnect power.
2. Remove the back panel and check for loose,
worn, or damaged drum belt—repair as necessary.
3. Remove console to access the CCU and
User Interface (UI).
4. Door Switch problems can be uncovered
by following procedure under TEST #7: Door
Switch, page 20; however, if this was not
done, the following can be performed without
applying power to the dryer. Connect an
ohmmeter across CCU P8-3 (neutral, white
wire) and P8-4 (door, tan wire).
 With the door properly closed, the ohmmeter
 If not, check harnesses and connections
5. Motor Circuit Check - Access the CCU and
measure the resistance across P8-4 and P9-1.
 If resistance across P8-4 and P9-1 is in
 Otherwise, continue to step 6.
6. Check the wiring and components in the path
between these measurement points by referring
to the appropriate wiring diagram (gas or electric)
on pages 24–25.
ELECTRIC DRYER ONLY: Check the thermal fuse.
See TEST #4b: Thermal Fuse, page 17.
ALL DRYERS: Continue with step 7 below to test
the remaining components in the motor circuit.
7. Check the drive motor and belt switch.
Electric Gas
Slowly remove the drum belt from the spring-
Dryer Dryer
loaded belt switch pulley, gently letting the belt
� �
switch pulley down. See Figure 8.
� �
� �
� no
� �
� �
� �
� �
should indicate a closed circuit (0–2 Ω).
between CCU and door switch. If good,
replace the door switch assembly.
the range of 1 to 6 Ω, the motor circuit is
acceptable. Replace the CCU.
Belt Switch
Pulley
Figure 8 - Slowly remove drum belt.
DO NOT REMOVE OR DESTROY
Drum
Belt