69
ELECTRICAL
CAUTION SYSTEM
4
Temperature Sensor Tests
The temperature sensor is a thermistor type sen-
sor which sends a voltage signal to the CDI unit.
The input signal is used to detect both tempera-
ture and temperature change over time.
Remove the temperature sensor from the engine.
Connect an ohmmeter to sensor lead wires
Place the sensor’s tip in water and gradually heat
the water while monitoring changes in resistance.
Sensor resistance should be as follows:
• 32° F (0° C) — 5.3 to 6.6 kΩ
• 77° F (25° C) — 1.8 to 2.3 kΩ
• 122° F (50° C) — 0.73 to 0.96 kΩ
• 167° F (75° C) — 0.33 to 0.45 kΩ
1. Temperature sensor 005557
1
1. Thermometer 005558
1