Connect the banana plugs of the cable to the Scully Universal Truck
Tester (UTT) unit following the 5-Wire OPTIC color code.
Turn on the unit, and set the sensor type to “OPTIC” for 5-Wire sensors
or “THERMISTOR” for 2-Wire sensors.
Connect a single Scully Connect 2-Wire or 5-Wire sensor to the other
end of the cable using the appropriate connector.
5-WIRE CONNECT
®
If a 5-Wire sensor is working as expected, the UTT will display a flashing
red light for compartment 1 and show a “GOOD” status with a green
light in the optic test display.
I N S T R U C T I O N S
D I S P L A Y
OPTIC TEST INDICATORS
COMPARTMENT INDICATORS
8 7 6 5 4 3 2 1
FAIL
POOR
GOOD
2-WIRE CONNECT
®
If a 2-Wire sensor is working as expected, the UTT will display a green
light for compartment 8 in the THERMISTOR section of indicator lights
THERMISTOR TEST INDICATORS
8 7 6 5 4 3 2 1
GOOD
POOR
FAIL
THERMISTOR
COMPATIBLE
6 5 4 3 2 1
OPTIC TEST INDICATORS
COMPARTMENT INDICATORS
8 7 6 5 4 3 2 1
FAIL
POOR
GOOD
THERMISTOR TEST INDICATORS
8 7 6 5 4 3 2 1
GOOD
POOR
FAIL
THERMISTOR
COMPATIBLE
6 5 4 3 2 1
RED
BLACK
GROUND
ORANGE
YELLOW
GREEN
POWER
THERMISTOR
OPTIC
5-Wire Connect
®
Sensor
2-Wire Connect
®
Sensor
1
1
2
3
3
2
