Whirlpool Cabrio WTW8500DW Technical Education page 76

TESTING
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or
electrical shock.
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 5-3, and
check the motor and electrical connections by performing
the Low, Mid, and High Speed Spin Test under Service
Load Control Mode, page 5-5. 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.
4. Remove console to access main control.
NOTE: Rotating the impeller quickly can cause the UI to
5. Visually check that the J1 connector is
attempt to power up, and may cause audible feedback
inserted all the way into the main control.
and the main control to power up and apply braking
torque to the impeller.
If visual checks pass, go to step 6.
¾ If impeller turns freely, go to step 4.
If visual checks fail, reconnect J1 and
¾ If impeller does not turn freely, determine what is
repeat step 1.
causing the mechanical friction or lockup.
6. With an ohmmeter, verify resistance values
4. Remove console to access main control.
as shown below:
5. Visually check that the J1 connector is inserted all the way
into the main control.
Check
¾ If visual checks pass, go to step 6.
between Resistance Step 7
connector
¾ If visual checks fail, reconnect J1 and repeat step 1.
pins should be:
6. With an ohmmeter, verify resistance values as shown
J1 1–3
below:
3–4
Check Resistance
between value
7. Tilt washer back to access the bottom
connector should be:
pins
of the washer and the drive motor area (see
J1 1-3 8-10 ohms
Figure 3a, page 16).
3-4 8-10 ohms
8. Visually check that the motor connection
on the drive is fully inserted into its mating
7. Tilt washer back to access the bottom of the washer and
the drive motor area (see Figure 1, page 6-8).
connector.
8. Visually check that the motor connection on the drive is
If visual checks pass, go to step 9.
fully inserted into its mating connector.
If visual checks fail, reconnect motor
connector on drive plate and repeat step 1.
6-10 Whirlpool 2014 CABRIO
n
9. With an ohmmeter, check for continuity on
the motor harness between all pins on the J1
machine/motor control connector and the drive
For Service Technician Use Only
FOR SERVICE TECHNICIAN'S USE ONLY
Go to Go to
Step 10
value if values if values Step 10
are: are:
8–10 Much Much Resistances
8–10 higher than less than
Go to 10 Go to 8
Step 7 Step 10
if values if values
are: are:
Much Much Resistances
higher than less than
10 ohms 8 ohms
Direct Drive Washer
®
¾ If visual checks pass, go to step 9.
¾ If visual checks fail, reconnect motor connector on
drive plate and repeat step 1.
9. With an ohmmeter, check for continuity on the motor
harness between all pins on the J1 machine/motor control
connector and the drive motor connector.
¾ If there is continuity, go to step 10.
¾ If there is no continuity, replace the lower washer
harness and run Service Diagnostics to verify repair.
10. Tilt washer back (if it is not already) to disconnect the
motor connector and use an ohmmeter to verify the
motor resistance values at the drive motor connector (see
Figure 2, page 6-8).
Check
between
drive motor
connector
2-3 (R-BR)
3-4 (BR-BK)
11. Remove the motor bolt, then the motor cover (see Figure
2, page 6-8).
12. Remove the shifter coil and stator to access the motor
connection.
13. Visually check that motor electrical connection cover is
fully seated (see Figure 1).
¾ If visual check passes, go to step 14.
¾ If visual check fails, fully seat the motor connection
cover, reassemble stator and motor cover, and repeat
step 1.
Connection Cover
(verify that clips are
(verify that clips are
Go to
if:
are all
Figure 5 - Removing Shifter Coil and
Go to correct
Checking Motor Electrical Connection
Step 10
if:
14. Replace the drive and perform
14. Replace the drive and perform Service Diagnostics to
Service Diagnostics to verify repair.
verify repair.
are all
¾ If the motor still fails to operate, go to step 15. If the motor still fails to operate,
correct
go to step 15.
15. If the tests above have failed to fix motor drive issues, the
main control has failed:
15. If the tests above have failed to fix motor
¾ Unplug washer or disconnect power.
drive issues, the main control has failed:
¾ Replace the main control assembly.
Unplug washer or disconnect power.
¾ Perform Service Diagnostics to verify repair.
Replace the main control assembly.
Perform Service Diagnostics to verify
repair.
Resistance Go to
value Step 11
should be: if values
are:
8-10 ohms Much
8-10 ohms higher than
10 ohms
Motor Electrical
Motor Electrical
Connection Cover
fully seated)
fully seated)
Figure 1 - Removing Shifter Coil and
Checking Motor Electrical Connection
Go to Go to
Step 14 Step 15
if values if:
are:
Much Resistances
less than are all
8 ohms correct