Case IH 10021 – Front Suspension control module: Front Suspension lock out Solenoid over current

The controller has detected an electrical current draw from the front suspension lockout solenoid that exceeds the maximum allowable limit. This typically points to a short circuit in the wiring harness or a dead short inside the solenoid coil itself.

• Magnum
• Magnum 180
• Magnum 200
• Magnum 215
• Magnum 235
• Magnum 240
• Magnum 245
• Magnum 275
• Magnum 280
• Magnum 290
• Magnum 305
• Magnum 310
• Magnum 340
• Magnum 380
• Steiger 350
• Steiger 480
• Steiger 580
• Quadtrac 500
• Quadtrac 550
• Quadtrac 580
• Quadtrac 600
• Maxxum
• Puma

1. 1

   Inspect the wiring harness and connectors leading to the front suspension lockout solenoid for a short to ground, paying special attention to the routing near the bottom of the fan shroud for wire chafing.

2. 2

   Perform a coil resistance test by disconnecting the electrical connector at the lockout solenoid and measuring the coil's resistance with a multimeter (a healthy 68 VDC coil should measure around 30 Ohms; near 0 Ohms indicates an internal short).

3. 3

   Perform a circuit test on the harness side of the connector using a multimeter to check for a short to power or short to ground.

1. 1

   Park tractor

   Park the tractor on a level surface.

2. 2

   Depressurize the system

   Locate the load sense unload valve screw on the suspension valve block. Rotate it clockwise to depressurize the system and allow the front axle to lower completely until it rests safely on its mechanical support stops.

3. 3

   Disconnect battery

   Disconnect the tractor's battery to prevent accidental startup or electrical spikes.

4. 4

   Locate lockout solenoid

   Locate the lockout solenoid on the suspended axle control valve assembly (near the accumulators).

5. 5

   Disconnect electrical harness

   Disconnect the electrical harness from the solenoid.

6. 6

   Remove solenoid or cartridge

   Depending on the exact failure and valve type, either remove the retaining nut to slide off and replace the solenoid coil, or use a wrench (e.g., 24mm or 7/8" hex) to unscrew and replace the entire cartridge valve assembly.

7. 7

   Install new components

   Install the new solenoid/cartridge, ensuring any O-rings are properly seated and lubricated.

8. 8

   Reconnect electricals

   Reconnect the electrical harness and the battery.

9. 9

   Repressurize and test

   Repressurize the suspension system, clear the fault codes, and test the lockout function to ensure the code does not return.