CSM 003509.04 — CSM Sensor Supply Voltage Low

CSM 003509.04 (CSM 3509.04)

Code: 003509.04

Shortcode: 3509.04


This error code, CSM 3509.04, indicates that the sensor supply voltage for the Single Lever Control in the Cab Switch Module (CSM) is below 4.80 volts. This may be caused by a fault in the power supply, wiring issues, or sensor malfunction.


The functionality of the CSM is degraded, meaning that the system will operate with limited capabilities.


Inspect Power Supply:

  • Ensure that the power supply to the sensor is stable and providing the correct voltage. Check for any interruptions or power losses.

Examine Wiring and Connections:

  • Inspect the wiring and connections associated with the sensor supply for signs of damage, wear, or loose connections. Clean and secure all connections to ensure proper electrical contact.

Test Sensor:

  • Test the Single Lever Control sensor to ensure it is functioning correctly and not causing the low voltage reading.

Measure Supply Voltage:

  • Use a multimeter to measure the actual sensor supply voltage. Confirm that it is within the acceptable range and address any issues causing the low voltage.

Reset and Test System:

  • After addressing potential causes, reset the system and conduct a comprehensive test to ensure the voltage levels are within the specified range and that functionality is restored.


Maintaining the correct sensor supply voltage is critical for accurate sensor performance and reliable system operation. Regular inspections and maintenance of the power supply, wiring, and sensors are essential to prevent such issues.

Control Units: John Deere

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