CLAAS Id7835h / 7835h – HYD (A060 / A60): The 6 valve is no longer detected / Valve is faulty or disconnected

Loss of communication or electrical continuity between the tractor's hydraulic control module and the number 6 hydraulic spool valve (component A122).

• CLAAS Axion 810
• CLAAS Axion 850
• CLAAS Axion 920
• CLAAS Axion 950
• CLAAS Axion 800 series
• CLAAS Axion 900 series
• CLAAS Arion 410
• CLAAS Arion 430
• CLAAS Arion 510
• CLAAS Arion 530
• CLAAS Arion 550
• CLAAS Arion 610
• CLAAS Arion 620
• CLAAS Arion 630
• CLAAS Arion 640
• CLAAS Arion 650
• CLAAS Arion 500 series
• CLAAS Arion 600 series

1. 1

   Check the connectors and the continuity of the wiring harnesses linking the HYD module (A060) to hydraulic valve 6.

2. 2

   Check for any short-circuits to ground/power or open circuits in the wiring.

3. 3

   Check the internal resistance of the valve 6 solenoid to ensure it has not failed internally.

4. 4

   Check the sources of energy (fuses, 12V supply from the UBM box, and ground).

5. 5

   Check the component's mechanical operating conditions (e.g., mechanical seizing of the spool, pressure, temperature).

1. 1

   Acknowledge the Fault

   Acknowledge the error on the Cebis display to allow the tractor's CAN bus to return to normal operating mode.

2. 2

   Locate the Valve

   Locate the hydraulic distributor block at the rear of the tractor and identify spool valve number 6 (Component A122).

3. 3

   Inspect Wiring

   Disconnect the electrical connector at valve 6. Inspect the pins for corrosion, pushed-out terminals, or moisture ingress.

4. 4

   Test the Solenoid

   Using a multimeter, measure the resistance across the valve's solenoid pins. If the circuit is open (infinite resistance) or shorted, the electronic actuator/solenoid on the valve has failed.

5. 5

   Test the Harness

   If the valve resistance is within spec, perform a continuity test from the valve connector back to the A060 HYD module harness. Repair any broken wires.

6. 6

   Replace the Valve/Solenoid

   If the wiring is intact and power/ground are present but the valve is still not detected, the valve's electronic head or the entire spool valve assembly must be replaced.

7. 7

   Calibrate

   After replacement, use the CLAAS Diagnostic System (CDS) to clear the fault memory and, if required, check the compatibility of program versions and calibrate the new valve.