Diverter Sensor/Position Switch - KitchenAid KMTM704E Series Technical Education

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.

Diverter Sensor/Position Switch

This test will check the wiring to the diverter sensor/position
switch and the diverter assembly itself. The following items are
part of the diverter sensor/switch circuit.
P6-3
n Harness/Connection
n Diverter Motor (see test on previous page)
Fuse
P10-1
F9
n Diverter Sensor/Position Switch
n Control Board
No test pad on P6-3.
Recommend using test pad on P10-1.
Test Procedure
1. Check the operation of the diverter motor in the Service
Diagnostic Cycle. You should be able to "hear" the cam
clicking as it rotates through the following wash zones.
¾ Interval 22, the diverter motor is activated and water is
'diverted' to upper spray arm.
¾ Intervals 18 & 17, the diverter motor will be on
continuously.
P9-3
¾ Interval 14, the diverter motor is activated and water is
Fuse
'diverted' to the Turbo Zone (some models only).
P10-1
F9
¾ Interval 13, the diverter motor is activated and water is
'diverted' to lower spray arm.
Strip Circuit – Diverter Switch
N
WH
P4-1
Triac
Electronic
Control
For Service Technician Use Only
DANGER
Electrical Shock Hazard
BR BR
Pin 1
Pin 3
Drain Motor
15Ω - 25Ω
120V, 60 Hz, 45W
Dispenser Wax Motor
1.4KΩ - 2.8KΩ
120V, 60 Hz, 10W
Pin 5
Pin 1
V
V
Pin 1 Pin 3
Dispenser Solenoid
260Ω - 300Ω
120V, 60 Hz, 17W
Diverter Sensor
Sensor
P11-4
Input
Electronic Control
Switch closes momentarily
and then reopens as the diverter
reaches each potential diverter position.
Salt Level Sensing
N
2. If the diverter is diverting the flow of water to the wash
zones, the diverter motor is working–continue to step 3.
If not, perform the diverter motor test procedure on the
preceding page.
3. Unplug dishwasher or disconnect power.
4. Remove toe and access panels to access control board.
5. Visually check that the diverter position switch connector
and P11 connector on the control are securely installed.
¾ If visual check passes, go to step 6.
¾ If any of the connectors are not inserted properly,
6. Check continuity of harness between diverter position
switch and P11 on control.
¾ If continuity test is good, continue to step 7.
¾ If continuity test fails, repair or replace harness as
7. To test diverter switch, unplug connector P11 from control
board and connect an ohmmeter across pins 3 and 4 (on
the connector removed, not the control board).
8. Plug in dishwasher or reconnect power.
9. Run the service diagnostic cycle as stated in Step 1, and
during the intervals listed, you should observe the diverter
WH
position switch closing momentarily and then reopening
P4-1
P6-1
as it reaches each potential position.
Triac
¾ If the switch is functioning normally (approximately 3
Electronic Control
¾ If switch does not open or close properly, or resistance
10. If the preceding steps did not correct the diverter/position
switch problem, replace the control board and retest.
11. Reassemble all parts and panels.
12. Plug in dishwasher or reconnect power and run Diagnostic
Cycle to verify repair.
WH
P4-1
P9-1
Triac
Electronic Control
N.O.
P11-3
Diverter
Position
P11-2
Switch
Recommend using test pad on P11-2.
KitchenAid 2015 Microfiltration Dishwashers
(Closed when salt low)
Salt Level Reed Switch
reconnect and retest diverter position switch.
needed.
N
ohms or less when closed), proceed to step 10.
is much greater 3 ohms when closed, then replace
diverter assembly and retest.
N
5V
Electronic Control
No test pad on P11-3.
TESTING
n
6-13