Component Testing Procedures - Maytag MAH8700A Technical Information

Component Testing Procedures

To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless
testing requires power.
NOTE: See "Machine Control Board" on next page for pin and connector locations.
Illustration
Thermistor
Door Switch
Water Sensor
Sump Sensor
Motor
Drain Pump
Water Valves
AC Power
Heater Relay
Reactor
MEMS Sensor
16026882
RPL 16026127
!
Component
Unplug harness connector and test
from wire insertion side of connector.
Pin #6 and Pin #3 of CN3.....................
Check voltage at Pin #6 and Pin #4 of
CN3.....................................................
Unplug harness connector and test
from wire insertion side of connector.
Pin #7 of CN10 and Pin #3 of CN5......
Pin #8 of CN10 and Pin #3 of CN5......
Check voltage and frequency at Pin #6
and Pin #7 of CN3...............................
Check voltage and frequency at Pin #6
and Pin #8 of CN3...............................
Check voltage at Pin #4 and Pin #3 of
CN8.....................................................
Unplug harness connector and test
from wire insertion side of connector.
Pin #1 and Pin #2 of CN9....................
Pin #1 and Pin #3 of CN9....................
Pin #2 and Pin #3 of CN9....................
Any 2 Pins (1,2,3) on Motor Connector
During drain check voltage at Pin #1 of
CN5 and Pin #6 of CN10.....................
Check voltage at Pin #1 and Pin #1,2,4
of CN10...............................................
Unplug harness connector and test
from wire insertion side of connector.
(Pre valve) Pin #3 of CN10 and Pin #2
of CN7.................................................
(Hot valve) Pin #2 of CN10 and Pin #2
of CN7.................................................
(Bleach valve) Pin #4 of CN10 and Pin
#2 of CN7.....................
(Main valve) Pin #1 of CN10 and Pin
#2 of CN7............................................
Check voltage at Pin #1 and Pin #3 of
CN5.....................................................
Check voltage at Pin #1 of CN5 and
Pin #1 of CN6......................................
During water heat check voltage at Pin
#1 of CN5 and Pin #2 of RY9...............
Unplug harness connector and test
from wire insertion side........................
Check voltage at Pin #1 and Pin #5 of
CN11...................................................
Check voltage at Pin #1 and Pin #4 of
CN11...................................................
WARNING
Test Procedure
2
Results
13K ohms @ 70F/21C (2.5V DC)
Door Open = 5V DC
Door Closed = 0V DC
60 ohms
60 ohms
Reset water level = 2.5V DC, 25.8 KHz
Reset water level = 2.5V DC, 25.8 KHz
0V DC or 3.75V DC
3.0 ohms
3.0 ohms
3.0 ohms
3.0 ohms
120V AC
120V AC when each valve operates
1100 ohms
1100 ohms
1100 ohms
1100 ohms
120V AC
120V AC
120V AC
Less than 1 ohm
Approximately 2.5V (2.2V – 2.8V)
Approximately 2.5V (2.2V – 2.8V)
©2006 Maytag Services
June 2006