ISSPRO EV Temperature Gauge - Manual (Page 2)

Check Amplifier Box
1. With power off disconnect 2 wire connector at the temperature sensor.
2. Make sure the four wire connector going to the gauge is connected.
3. Turn power to gauge on.
4. Using a multimeter on the voltage setting check voltage at the gauge.
100°F to 240°F and 100°F to 280°F
Green(+)/Yellow(-) Temperature Sensor Output Gray(+)/White(-)
1.6 Volts Open -1.2 Volts
# 1.5 Volts 120°F 1.8 Volts
# -0.3 Volts 140°F 1.6 Volts
# Connect temperature sensor for these measurements.
140°F to 320°F
Green(+)/Yellow(-) Temperature Sensor Output Gray(+)/White(-)
1.4 Volts Open -1.6 Volts
# 1.6 Volts 140°F -0.6 Volts
# 1.4 Volts 180°F 1.4 Volts
# Connect temperature sensor for these measurements.
5. 140°F to 320°F temperature sensor may need heated using another heat source
because the engine does not heat temperature sensor above 140°F at idling.