John Deere 637..............: Engine Timing Sensor Signal Missing

The system has detected that the signal from the Engine Timing Sensor is not being received. This may affect the proper operation of the engine and its performance.

1. 1

   The connection and wiring of the Engine Timing Sensor

2. 2

   The integrity of the signal path from the Engine Timing Sensor to the controller

3. 3

   The functionality of the Engine Timing Sensor itself

1. 1

   Inspect

   Check the physical connections and wiring of the Engine Timing Sensor for damage, corrosion, or loose contacts.

2. 2

   Test

   Use a diagnostic tool to verify if the Engine Timing Sensor is generating a signal.

3. 3

   Replace

   If the sensor is not functioning, replace it with a compatible unit.