New Holland 3009: Coolant Temperature Sensor Circuit Open or Sensor Not Connected

The system has detected an open circuit in the coolant temperature sensor or the sensor is not properly connected. This may prevent accurate monitoring of the coolant temperature, potentially leading to improper engine operation or overheating.

1. 1

   Coolant temperature sensor connections

2. 2

   Wiring between the sensor and the controller

3. 3

   Sensor itself for damage or disconnection

1. 1

   Inspect

   Check the connections of the coolant temperature sensor for looseness, corrosion, or damage.

2. 2

   Test

   Use a multimeter to test the continuity of the wiring between the coolant temperature sensor and the controller.

3. 3

   Replace

   If the sensor is damaged or not functioning, replace it with a compatible component.