Whirlpool Cabrio WTW8500DC Service Manual page 16

FOR SERVICE TECHNICIAN'S USE ONLY
 If 120VAC is present, go to step 8.
 If 120VAC is not present, go to step 12.
8. Unplug washer or disconnect power.
9. Tilt washer back and remove sound pad
(if equipped) to access the drive system (see
Figure 3a).
Motor Cover
Motor/Shifter
Motor Bolt
Connector
Figure 3a - Drive Area, Viewed From Bottom,
Sound Pad (If Equipped) Removed
Shifter Connection
Figure 3b - Motor Cover Removed
10. Visually check the electrical connections
to the shifter.
 If visual check passes, go to step 11.
 If connections are loose, reconnect the
electrical connections and repeat step 1.
11. With an ohmmeter, check the harness for
continuity between the shifter and main control
using the following pinouts. See chart below.
Shifter and Pump Connector Harness
J4-1 (White wire) To shifter connector Pin 3 (White wire)
J4-7 (Orange wire) To shifter connector Pin 1 (Orange wire)
 If there is continuity, go to step 12.
 If there is no continuity, replace the lower
washer harness and repeat step 1.
12. Remove the motor bolt, then the motor
cover (see Figure 3b). Remove the motor stator
and the shifter coil and confirm that the slider
on the motor shaft moves freely (see Figure 4).
PAGE 16
Recirculation Pump
Drain Pump
Stator
Motor Connection
 If slider moves freely, and there are no
indications of rubbing on the inside diameter
of the shifter coil and outside diameter of the
slider, go to step 13.
 If slider binds or does not move freely, or
there are indications of rubbing on the inside
diameter of the shifter coil or outside diameter
of the slider, replace the drive.
Figure 4 - Checking Slider Movement/Appearance
a. Unplug washer or disconnect power.
b. Replace the drive.
c. Reassemble all parts and panels.
d. Plug in washer or reconnect power.
Perform Service Diagnostics to verify repair.
13. If the preceding steps did not correct the
problem, replace the main control.
a. Unplug washer or disconnect power.
b. Replace the main control.
c. Reassemble all parts and panels.
d. Plug in washer or reconnect power.
Perform Service Diagnostics to verify repair.
TEST #3b: Drive System – Motor
This test checks the wiring to the motor and
the motor itself.
NOTE: Drain water from tub and remove any
wash load items present in the basket.
1. See Activating Service Diagnostic Mode,
page 2, and check the motor and electrical
connections by performing the Low, Mid, and
High Speed Spin Test under Service Load
Control Mode, page 4. The following steps
assume that this step failed.
2. Unplug washer or disconnect power.
3. Check to see if impeller will turn freely and
is not connected to the basket.
NOTE: Rotating the impeller quickly can cause
the UI to attempt to power up, and may cause
audible feedback and the main control to power
up and apply braking torque to the impeller.
 If impeller turns freely, go to step 4.
 If impeller does not turn freely, determine
what is causing the mechanical friction or
lockup.
DO NOT REMOVE OR DESTROY