Service Manual

148 Part Number: 000015431 Rev 02 6/20
The initial numbers displayed are constantly changing
and are less than 3000.
With an initial reading of less than 300 and a tap test
reading of 3300 or higher indicates a good ice thickness
probe and control board.
The initial numbers displayed do not change or initial
numbers did not increase by 3000 during tap test.
• Verify the ice thickness probe connector is properly
plugged into the board and the ice thickness probe
wiring is correct. If the wiring is incorrect replace the
ice thickness probe.
J11 Connector On Control Board
Pin 1 (+) Red
Pin 2 (-) Black
Pin 3 Twisted Wire
10. Unplug the ice thickness probe and set a VOM to DC
voltage scale - Measure voltage across
Pin 1 (+) Red Wire and Pin 2 (-) Black Wire. Refer to
“Electronic Control Board” on page 200 for location.
A. Voltage measures 3.25 to 3.35 VDC = Replace ice
thickness probe.
B. Voltage does not measure 3.25 to 3.35 VDC =
Replace the control board.