Wash Motor (Variable Speed) - KitchenAid KUDE20FB*0 Technical Education

TESTING
DANGER
Electrical Shock Hazard
Only authorized technicians should perform
diagnostic voltage measurements.
After performing voltage measurements,
disconnect power before servicing.
Failure to follow these instructions can result in
death or electrical shock.

Wash Motor (Variable Speed)

This test will check the wiring to the wash motor and the wash
motor itself. The following items are part of the wash motor
circuit.
■ Harness/Connection
■ Wash Motor (Variable Speed)
■ Control Board
Test Procedure
1. Check the tub and sump for anything that may be
impeding water flow. Inspect and if necessary clean
the tri-filter system and verify that filters are installed
properly. Also, inspect spray arm water nozzles and clean
if needed.
2. Check the wash motor and electrical connections by
performing the Service Diagnostic Cycle. The following
steps assume that this step was unsuccessful.
3. Unplug dishwasher or disconnect power.
4. Remove outer door panel to access control board.
Strip Circuit – Wash & Drain Motors (Variable Speed)
6-14 KitchenAid 2013 Stainless Steel Tall Tub Dishwasher
n
For Service Technician Use Only
5. Visually check that connector P5 is inserted all the way
into the control board.
¾ If visual checks pass, go to step 6.
¾ If visual checks fail, reconnect P5 and repeat step 2.
6. Visually check that the wash motor connector is inserted
all the way into the motor.
¾ If visual checks pass, go to step 7.
¾ If visual checks fail, reconnect motor connector and
repeat step 2.
7. Check the harness between the control board and wash
motor for continuity.
¾ If there is continuity, go to step 8.
¾ If there is no continuity, repair or replace harness as
needed.
8. Check the wash motor windings. Disconnect the P5
from the control board. With an ohmmeter, verify the
resistance values as show below.
Motor Harness
P5, Pins 1 & 2
P5, Pins 2 & 3
P5, Pins 3 & 1
¾ If the values are outside the range, open, or
inconsistent from winding to winding, replace the wash
motor.
¾ If the values are within the ranges listed, replace the
control board.
9. Unplug dishwasher or disconnect power.
10. Reassemble all parts and panels.
11. Plug in dishwasher or reconnect power.
Windings (ohms)
11.6-13.4 ohms
11.6-13.4 ohms
11.6-13.4 ohms