Service Manual

3-8
n
Whirlpool Smart All-In-One Washer & Dryer
COMPONENT TESTING
For Service Technician Use Only
TEST #4: Door Lock System
Check the relays and electrical connecons to the door lock by
performing the Service Diagnosc Mode Tests on page 2-3. The
following steps assume the door cannot lock or unlock during
that test. Perform the following checks if the washer does not
lock (or unlock).
1. Check door lock mechanism for obstrucon or binding.
Repair as necessary.
2. Unplug washer/dryer or disconnect power.
3. Gently lay washer/dryer on its right side to access the
ACU. Remove AC shield and ACU cover.
4. Visually check that the J2 (door switch) connector is
inserted all the way into the ACU.
¾ If visual check passes, go to step 5.
¾ If any of the connectors are not inserted properly,
reconnect and retest door lock.
5. Disconnect the J2 connector from the ACU. NOTE: To
measure the door lock switch in the “locked” posion, plug
in washer/dryer or reconnect power. Press the POWER
buon, select any cycle, and then press START. Actuaon
of the door lock solenoid should be heard. At that point,
unplug the washer/dryer and disconnect J2 from the ACU
and measure resistance across pins (ACU side) according to
the following chart:
Component Resistance Contacts Measured
Door Switch Door Open =
Open Circuit
Door Closed =
~170 ohms
J2-2 J2-3
Lock Switch Locked =
0 ohms
Unlocked =
Open Circuit
J2-1 J2-2
Lock Solenoid ~170 ohms
with door closed
J2-2 J2-3
¾ If resistance values are good, go to step 6.
¾ If any of the measurements are out of range, check the
harness of the suspected component between the ACU
and door lock mechanism for connuity.
¾ If the harness and connecons are good, replace the
door lock mechanism. IMPORTANT: To minimize risk
of damage to door lock/switch wires, remove the door
lock mechanism screws before removing the front panel.
6. If the preceding steps did not correct the lock problem,
replace the ACU and retest door lock mechanism.
¾ Unplug washer/dryer or disconnect power.
¾ Replace the ACU.
¾ Reassemble all parts and panels.
¾ Perform the Service Diagnosc Mode Tests on page 2-3
to verify repair.
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Failure to do so can result in death or
electrical shock.
Replace all parts and panels before operating.
Figure 1 - Door Lock Strip Circuit
DOOR LOCK SYSTEM
ACU
DOOR LOCK ASSEMBLY
DOOR LOCK ASSY
LOCK SWITCH
DOOR SWITCH
LOCK SOLENOID
~170 ohms
J2-3
J2-2
J2-1
3
2
1