John Deere 523973.03 – CSC (Comfort System Controller) / TSC (Tractor Suspension Controller): Issue With Signal Voltage For Cab Position Sensor During A Calibration

The cab suspension position sensor circuit voltage is too high when the cab suspension is all the way up during the calibration process.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 8225R
• 8245R
• 8270R
• 8295R
• 8320R
• 8335R
• 8345R
• 8370R
• 8400R
• 6230
• 6330
• 6430

1. 1

   Diagnose and resolve any other active CSC codes first, as they may point to a broader electrical issue.

2. 2

   Inspect the wiring harness and connections to the cab suspension position sensor (Sensor B110) for signs of damage, looseness, or short circuits to power.

3. 3

   Specifically check the 5-volt supply wire just behind the connector on the wiring harness, as it is known to break or fray and cause this specific code.

4. 4

   Use a voltmeter to measure the voltage at the cab suspension sensor to confirm if the readings are out of the valid range when the cab is raised.

1. 1

   Repair Wiring

   Repair or replace any damaged, broken, or exposed wires and connectors found during the visual inspection.

2. 2

   Replace Sensor

   If the wiring is intact but the sensor provides incorrect voltage readings during testing, replace the faulty cab position sensor to ensure accurate position detection.

3. 3

   Recalibrate

   After resolving the hardware issue (whether wiring or sensor replacement), you must reset the system and perform a full recalibration of the cab suspension system to ensure accurate sensor data and proper operation.