– 46 –
Drive Belt Motor:
For the PTW600/605 control
board. The connector for the speed sensor is:
J701 5 VDC. Pin 3 is ground. Pin 2 is the hall
effect sensor. The speed/hall sensor can be
diagnosed in two different ways.
1. Run Service Mode Test 14: Spin Test.
If the speed/hall sensor is bad or disconnected,
the basket will start to spin normally at first. After
5-seconds, motor power will be stopped.
If the washer continues to spin for at least
15-seconds, the speed/hall sensor is good.
2. With the wiring connectors connected to the
main board and to the speed sensor, test for
proper voltage.
At connector J710, between pins 1 and 3
resistance should be +/- 5 volts with speed
sensor harness side connector either plugged or
unplugged into J710.
Speed/Hall Sensor Removal
1. Remove belt protector and belt (see
Belt
Removal
under
Drive Belt
in this section
of the service guide), and remove the drive
pulley, transmission pulley, and the pully (see
Drive/Transmission Pulleys
in this section of
the service guide).
2. Disconnect the speed/hall sensor from the
drive motor and disconnect from the main
harness.
Speed/Hall Sensor
The speed/hall sensor is mounted to the drive
motor and sends a pulse signal back to the
control board. This is done when the magnet that
is mounted in the drive motor pulley pass over the
sensor.
If the control does not read any signal from the
sensor from the movement of the motor, the
washer cycle will stop.
Speed/Hall Sensor Diagnosing
Direct Drive Motor:
For the
PTW700/705/900/905 control board. The
connector for the speed sensor is: J1101. Pin 1
is 15 VDC, Pin 4 is ground. Pin 3 is the hall effect
sensor. Pin 2 is the PTC input.
Magnet
(
Continued next page
)
5
6
7
8
1
2
3
4
1 2 3 4
Hamess
Side
Mate
J1101
(GREEN)
PTC HALL
22 - BX
22 - VX
22 - YX
22 - RX
1 2 3
1
2
3
HE SPEED SENSOR
SPEED
SENSOR
- 5V
SIGNAL
GND
J701
(YELLOW)
22 - CX
22 - NX
22 - OX
Pulley Removal
1. Remove the two hex-head nuts (one for
each pulley) securing them to the motor and
transmission shafts.
2.
Slide the pulleys off the motor and
transmission shafts. Torque new pulley nut to
110-in. pounds. when reinstalling.
Guide
Post
Hole