Component Testing; Ice Door Motor; Water & Ice Pad Switches - Whirlpool 8178501A Manual

Before testing any of the components, perform
the following checks:
The most common cause for control failure
●
is corrosion on connectors. Therefore, dis-
connecting and reconnecting wires will be
necessary throughout test procedures.
All tests/checks should be made with a VOM
●
or DVM having a sensitivity of 20,000 ohms-
per-volt DC, or greater.
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.

ICE DOOR MOTOR

Refer to page 3-2 for the procedure for access-
ing the ice door motor.
1. Unplug refrigerator or disconnect power.
2. Disconnect the motor connector at P5 on
the core board.
3. Set the ohmmeter to the R x 1 scale.
4. Touch the ohmmeter test leads to the fol-
lowing motor connector pins:
Pin 1 to pin 2,3,5,or 6 = 45 to 55 Ω

COMPONENT TESTING

3 2 1
6 5 4
Check all connections before replacing com-
●
ponents, looking for broken or loose wires,
failed terminals, or wires not pressed into
connectors far enough.
Resistance checks must be made with power
●
cord unplugged from outlet, and with wiring
harness or connectors disconnected.
Electrical Shock Hazard
WATER & ICE PAD SWITCHES
Refer to page 3-2 for the procedure for access-
ing the water & ice pad switches.
1. Unplug refrigerator or disconnect power.
2. Disconnect the water and ice pad switch
connector from the user interface board.
3. Set the ohmmeter to the R x 1 scale.
4. Touch the ohmmeter test leads to the
pad switch connector pins and press the
pad. The meter should indicate less than
175 Ω.
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