Component Testing; Power On/Off Switch - Whirlpool LHW0050PQ Service Manual

Before testing any of the components, perform
the following checks:
• Control failure can be the result of corrosion
on connectors. Therefore, disconnecting and
reconnecting wires will be necessary through-
out 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.

POWER ON/OFF SWITCH

1
3
Refer to page 4-2 for the procedure for servic-
ing the power on/off switch.
1. Unplug washer or disconnect power.

COMPONENT TESTING

Electrical Shock Hazard
2
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.
• Unless stated otherwise, make all resis-
tance checks by disconnecting the compo-
nent connector at the electronic control.
WARNING
2. Disconnect the wires from the power on/
off switch terminals.
3. Press the switch plunger and set it to the
OUT position.
4. Set the ohmmeter to the R x 1 scale.
5. Touch the ohmmeter test leads to the
following switch terminals. The meter
should indicate an open (infinite) circuit.
Pins 1 - 3
Pins 2 - 4
6. Press the switch plunger and set it to the
IN position.
7. Touch the ohmmeter test leads to the
following switch terminals. The meter
should indicate a closed circuit (0 Ω) .
Pins 1 - 3
Pins 2 - 4
5-1