New Holland LS140 Workshop Manual page 466

2. Air Cleaner Switch
Remove one wire at a time from the sensor
switch, 1, on the air cleaner canister. Remove the
B wire and the EIC board will light and beep when
the wire is removed from the switch. Remove the
B/Y wire and the EIC board will light and beep.
If the EIC board lights and beeps, the EIC and
circuit wire to the sensor is OK. The problem is in
the sensor; replace the sensor. If the EIC board
fails to light and beep, check the wires from the
sensors to the EIC board.
3. Hydrostatic Charge Pressure Switch
Remove one wire at a time from the sensor
switch, 1, at the charge check valve. Remove the
Y/GY wire and the EIC board will light and beep.
Remove the B wire and the EIC board will light
and beep.
If the EIC board lights and beeps, the EIC and
circuit wire to the sensor is OK. The problem is in
the sensor; replace the sensor. If the EIC board
fails to light and beep, check the wires from the
sensor to the EIC board.
4. Engine Oil Pressure Sensor
Remove the Y/B wire, 1, from the sensor and the
EIC board will light and beep.
If the EIC board lights and beeps, the EIC and
circuit wire to the sensor is OK. The problem is in
the sensor; replace the sensor. If the EIC board
fails to light and beep, check the wires from the
sensor to the EIC board.
SECTION 55 - ELECTRICAL SYSTEM
55-41
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