Maytag MHW9000YW0 Mode D'emploi page 20

FOR SERVICE TECHNICIAN'S USE ONLY
Approx. Temperature
F° C°
32 0
50 10
68 20
86 30
104 40
122 50
140 60
158 70
176 80
194 90
 If the resistance is within the range shown
in the table, go to step 8.
 If the resistance is infinite or close to zero,
go to step 5.
5. Remove the back panel to access the
heating element.
6. Disconnect the temperature sensor
connector from the heating element. See
Figure 14, page 19.
7. Using an ohmmeter, measure the
resistance across pins 1 and 2 of the
temperature sensor (on the heating element).
 If the resistance is within the range shown
in the table above, the sensor is good;
replace the lower main harness.
 If the resistance is open, replace the
temperature sensor.
8. If the preceding steps did not correct the
temperature sensor problem, replace the CCU.
 Unplug washer or disconnect power.
 Replace the CCU.
 Reassemble all parts and panels.
 Perform the "Quick Diagnostic Test"
on page 6 to verify repair.
Detergent Dispensing Controls
3 Dispenser Distribution System – Test #12
3 Expansion Board Power Check –
Test #13
3 Detergent Pump – Test #14
3 Level/Presence Sensor Module – Test #15
3 Diverter Valve Assembly – Test #16
PAGE 20
Approx. Resistance
K Ω
35.9
22.8
14.8
9.8
6.6
4.6
3.2
2.3
1.7
1.3
TEST #12: Dispenser
Distribution System
Perform the following checks if the dispenser
motor does not change the direction of the
diverter valve.
1. Check water supply to washer. Check water
hose connections to and inside the washer.
2. Verify that dispenser drawer or detergent
cartridge is not clogged with detergent.
3. Unplug washer or disconnect power.
4. Remove the top panel to access the
machine electronics.
5. Check the mechanical linkage from
dispenser motor to top of dispenser.
6. Visually check that the DI6 connector is
inserted all the way into the CCU. Refer to
CCU diagram on page 13.
 If visual check passes, go to step 7.
 If connector is not inserted properly,
reconnect DI6 and retest.
7. Remove connector DI6 from the CCU.
With an ohmmeter, verify the resistance
values shown below across the following
DI6 connector pinouts.
DISPENSER SYSTEM RESISTANCE
Component Resistance
Dispenser
1400-1600 Ω
Motor
 If the motor resistance is good, go to step 8.
 If the measurement does not match
the value shown in the chart, check the
harness and connections between the CCU
and dispenser motor for continuity. If the
harness and connections are good, replace
the dispenser motor.
8. Plug in washer or reconnect power. Run
the "Quick Diagnostic Test" on page 6. During
step "C03," observe that the dispenser motor
moves the diverter valve from one position to
another, ending at position 1 (Prewash). Verify
the motor has repositioned the valve and
water is flowing into dispenser.
 If the dispenser motor did not change the
direction of the diverter valve, replace the motor.
9. If the preceding steps did not correct the
dispensing problem, replace the CCU and
retest dispenser system. Perform the "Quick
Diagnostic Test" to verify repair.
DO NOT REMOVE OR DESTROY
Contacts
Measured
DI6-1 DI6-3