John Deere 37: Fuel Temperature Input Voltage too High

The system has detected that the input voltage for the fuel temperature sensor is higher than the expected range. This may indicate a problem with the sensor signal or the electrical circuit supplying power to it.

1. 1

   The wiring and connections to the fuel temperature sensor

2. 2

   The voltage supply to the fuel temperature sensor circuit

3. 3

   The fuel temperature sensor itself

1. 1

   Inspect

   Check the wiring and connections to the fuel temperature sensor for damage, corrosion, or loose contacts.

2. 2

   Measure

   Use a multimeter to measure the voltage at the fuel temperature sensor input and compare it to the specifications in the service manual.

3. 3

   Test

   Test the fuel temperature sensor for proper operation using a known good sensor or diagnostic tool.