Component Testing; Pushbutton Switches - Whirlpool LEW0050PQ Job Aid And 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.

PUSHBUTTON SWITCHES

1
3
Unused
Plunger
Refer to page 4-2 for the procedure for servic-
ing the pushbutton switches.
1. Unplug dryer or disconnect power.

COMPONENT TESTING

Electrical Shock Hazard
2
4
6
• 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 terminals of
the pushbutton switch you are testing.
3. Set the ohmmeter to the R x 1 scale.
4. Depending on the pushbutton switch ter-
minal configuration, touch the ohmmeter
test leads to the following switch termi-
nals. The meter should indicate either an
open (infinite), or a closed (0 Ω) circuit.
Terminals 1 - 3
Terminals 2 - 4
Terminals 4 - 6
5. Press the plunger, and the switch should
change states (from open to closed, or
closed to open).
5-1