KitchenAid KUDE20FB*0 - Door Switch Circuit Testing

TESTING
KitchenAid 2013 Stainless Steel Tall Tub Dishwasher
n
6-7
For Service Technician Use Only
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.
Door Switch Circuit
Perform the following checks if the dishwasher does not
detect the door open or closed. This test will check the wiring
to the door switch and the door switch itself. The following
items are part of the door switch circuit.
■ Harness/Connecon
■ Door Switch/Latch Assembly
■ Control Board
Test Procedure
1. Check for improper installaon of the dishwasher or
leveling. Check door latch mechanism for obstrucons
or binding. Verify door seal is seated properly. Check
for interference between dish racks and door. Repair as
necessary.
2. Unplug dishwasher or disconnect power.
3. Remove outer door panel to access control board and
door latch.
Strip Circuit – Door Switch
4. Check door switch contacts and all connecons in the
door switch circuit. Visually check that the P9 connector
on the control and the door latch connector are securely
installed.
¾ If visual check passes, go to step 5.
¾ If any of the connectors are not inserted properly,
reconnect and retest door latch/switch.
5. Disconnect connector P9 from the control board.
6. Using an ohmmeter, measure across P9, pins 5 and 6 with
the door closed, strike completely in latch mechanism
(switch closed).
¾ If 3 ohms or less is measured, proceed to step 7.
¾ If high resistance is measured when door is closed,
check for loose connecons and repair as needed.
7. Using an ohmmeter, measure across P9, pins 5 and 6 with
the door open, strike removed from latch mechanism
(switch open).
¾ If reading is innite, go to step 8.
¾ If reading shows connuity, or door switch is damaged,
replace door switch and retest.
8. Plug in dishwasher or reconnect power.
9. Using a voltmeter set to DC, with door open, verify that
13V DC is present across P9-6 (+13V) and P12-2 (DC GND).
¾ If 13V DC is not present, replace the control.
¾ If 13V DC is present, proceed to step 10.
10. Reassemble all parts and panels.
11. Plug in dishwasher or reconnect power.
12. Perform Diagnosc Cycle to verify repair.