Maytag MHW9000YW0 Mode D'emploi page 24

FOR SERVICE TECHNICIAN'S USE ONLY
TEST #16: Diverter Valve Assembly
(Available on select models only)
This test checks the electrical connections
to the valves and the valves themselves.
1. Check the relays and electrical connections
to the valves by performing the "Quick
Diagnostic Test" on page 6. The following
steps assume one or more of the valves did
not turn on.
2. For the valve(s) in question, check the
individual solenoid coils:
a. Unplug washer or disconnect power.
b. Remove top panel to access machine
electronics.
c. Remove connectors DV2 and SOP2
from the Expansion Board (EB). Refer to EB
diagram on page 21.
d. Check harness connections to the
solenoid valves. Verify continuity in harness
between EB and solenoid valves.
3. Check valve coil resistance at the valves,
or across the following DV2 and SOP2
connector pinouts:
Diverter Valve Ass'y
Spray Valve
Dispenser Valve
Resistance should be 890–1.1k Ω.
Dispenser Valve Connector
(to Expansion Board, SOP2)
To Dispenser Assembly
To Spray Nozzle
Figure 17 - Diverter Valve Assembly (select models only)
PAGE 24
 If resistance readings are outside the range
 If resistance readings are within range,
4. Plug in washer or reconnect power.
5. With a voltmeter set to AC, attach the leads
across the pins of the suspect valve (see
chart in step 3). Run the "Quick Diagnostic
Test" and check for line voltage across the
pins of the valve. NOTE: Refer to the "Quick
Diagnostic Test" on page 6 to determine when
the dispenser and spray valves are actuated.
(Example: spray valve is actuated during test
phase C02.)
 If line voltage is present and valve still does
 If line voltage is not present, perform TEST
6. If the preceding steps did not correct the
valve problem, replace the CCU.
 Unplug washer or disconnect power.
 Replace the CCU.
Pinouts
 Reassemble all parts and panels.
DV2, pins 1 & 2
 Perform the "Quick Diagnostic Test"
SOP2, pins 1 & 2
Diverter Valve Assembly
or open, replace the valve assembly.
reconnect DV2 and SOP2 to the Expansion
Board and continue to step 4.
not activate, replace valve assembly.
#13: Expansion Board Power Check on
page 21.
on page 6 to verify repair.
Spray Valve Connector
(to Expansion Board, DV2)
From Flow Meter
NOTE: Spray valve will not
be activated if Level/Presence
sensors are malfunctioning or
detergent cartridge is missing.
DO NOT REMOVE OR DESTROY