Whirlpool Maytag MVW6200KW Technical Manual page 26

6. Remove connector J6 from main control. With an ohmmeter, verify
resistance of the shifter motor across the following J6 connector
pinouts:
Resistance should be 2 kΩ to 3.5 kΩ.
Component
Shifter
➢ If values are correct, reconnect J6 and proceed to step 7.
➢ If values are open or out of range, go to step 12.
7. With a voltmeter set to AC, connect the black probe to
probe to J6-6. Plug in washer or reconnect power. Activate shifter
motor by switching the shifter output ON and OFF. Energize outputs
using Component Activation
NOTE: Motor must be stopped to toggle the shifter. Alternately, Spin and
Agitate can be commanded to switch shifter in Component Activation
mode.
IMPORTANT: Lid must be closed to run the Spin and Wash tests.
➢ If 120 VAC is present, go to step 8.
➢ If 120 VAC is not present, go to step
Shifter Switch:
8. With a voltmeter set to DC, connect the black probe to J2-2 (Circuit
Gnd) and red probe to J2-1 (Shifter Switch). In Component Activation
mode, switch between Spin and Agitate modes. Voltage should toggle
between 0 and +5 VDC.
SPIN = +5 VDC
AGITATE = 0 VDC
➢ If voltage corresponds to setting, go to step 9.
➢ If voltage does not switch, go to step 11.
Optical Sensor:
9. With a voltmeter set to DC, connect the black probe to J2-2 (Circuit
Ground) and a red probe to J2-3 (Tachometer Power).
➢ If +12 VDC is present, go to step 10.
➢ If +12 VDC is not present, go to step 16.
10. Activate Motor Speed Tachometer from Sensor Feedback. Slowly turn the
basket by hand.
NOTE: Spinning the basket too fast will result in a safety fault for the lid
lock. The screen will display the basket speed in RPM.
➢ If the tachometer is not verified, go to step 11.
➢ If the tachometer is verified, go to step 16.
11. Unplug washer or disconnect power.
12. Tilt washer back to access the bottom of the washer and the drive
motor area.
13. Visually check the electrical connections to the shifter.
➢ If visual check passes, go to step 14.
➢ If connections are loose, reconnect the electrical connections and
repeat step 1.
14. With an ohmmeter, check the harness for continuity between the shifter
and main control using the pinouts in the following chart.
➢ If there is continuity, go to step 15.
➢ If there is no continuity, replace the lower washer harness and repeat
step 1.
Shifter to Main Control & Drain Pump
Shifter Pin 1 to Main Control J2-4
Shifter Pin 2 to Main Control J2-3
Shifter Pin 3 to Main Control J6-6
Shifter Pin 4 to Main Control J2-1
Shifter Pin 5 to Main Control J2-2
Shifter Pin 6 to Main Control J6-2
26
FOR SERVICE TECHNICIAN'S USE ONLY
J6 Connector Pinout
J6, 2 & 6
J6-2 and red
mode.
11.
15. Replace the shifter assembly.
a. Unplug washer or disconnect power.
b. Replace shifter assembly.
c. Reassemble all parts and panels.
d. Plug in washer or reconnect power. Calibrate washer and perform
Automatic Test to verify repair.
16. 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. Calibrate washer and perform
Automatic Test to verify repair.
TEST #3b: Drive System – Motor
This test checks the motor, motor windings, wiring, and start capacitor.
IMPORTANT: Drain water from tub before accessing bottom of washer.
1. Check the motor and electrical connections by performing the wash
test sequence under Component
spinning in a clockwise direction while performing Low, Mid or High
Spin Speed test under Component
assume that this step was unsuccessful.
2. Unplug washer or disconnect power.
3. Check to see if basket will turn freely.
➢ If basket turns freely, go to step 4.
➢ If basket does not turn freely, determine what is causing the mechanical
friction or lockup.
4. Remove console to access main control.
5. Visually check that the J2 and J6 connectors are inserted all the way
into the main control.
➢ If visual checks pass, go to step 6.
➢ If visual checks fail, reconnect connectors and repeat step 1.
6. Plug in washer or reconnect power. Run the Motor Slow Wash test
under Component Activation.
7. With a voltmeter set to AC, connect black probe to J6-6
red probe to J6-4 (CW Winding).
➢ If 120 VAC is cycling ON during CW rotation, go to step 8.
➢ If 120 VAC is not present, go to
8. With a voltmeter set to AC, connect black probe to J10-6 (Neutral), red
probe to J6-1 (CCW Winding).
➢ If 120 VAC is cycling ON during CCW rotation, go to step 9.
➢ If 120 VAC is not present, go to
9. Unplug washer or disconnect power.
10. Remove connector J6 from main control. With an ohmmeter, check
resistance of motor windings across the following J6 connector
pinouts:
Motor Winding J10 Pinout
CW Winding
CCW Winding
➢ If values are open or out of range, go to step 11.
➢ If values are correct, go to step 15.
11. Tilt washer back to access drive system.
Activation. Verify that the basket is
Activation. The following steps
(Neutral)
TEST #1: Main Control (ACU).
TEST #1: Main Control (ACU).
Resistance
J6, 4 & 6 5-9.5 Ω
J6, 1 & 6 5-9.5 Ω
DO NOT REMOVE OR DESTROY
and