Coolant Temperature Sensor
- Ensure engine temperature is greater than 176°F (80°C). Remove harness connector from coolant temperature sensor. Connect multimeter between temperature sensor terminal No. 1 and engine ground.
- Turn ignition on. Multimeter should read 4.5-5.5 volts. If no voltage is present, repair break in wiring. If no voltage is present and no break in wiring is found, replace respective control unit that controls that temperature sensor.