Case IH 517962-04 - DEC – DEC: Transmission Low Clutch Solenoid Circuit Fault

The system has detected that the voltage in the Transmission Low Clutch Solenoid circuit is out of range, indicating a short circuit to the battery or an open/short to ground. The controller detects this abnormal current/voltage when the driver is off or when attempting to engage the clutch.

• MAGNUM AFS Connect
• Case IH Magnum Series Tractors
• Magnum 235-340 Series 4
• MX Series Magnum
• MX210

1. 1

   Locate the transmission control valve block on the side of the transmission and identify the Low Clutch Solenoid.

2. 2

   Disconnect the electrical connector at the Low Clutch Solenoid and inspect for pushed-back pins, corrosion, or moisture.

3. 3

   Use a multimeter to check the wiring harness between the solenoid connector and the DEC module for continuity, short to ground, and short to power (+12V).

4. 4

   Measure the resistance across the pins of the Low Clutch Solenoid to check for an internal short or open circuit (infinite resistance).

1. 1

   Preparation

   Park the tractor on a level surface, engage the park brake, turn off the engine, and disconnect the battery to prevent electrical spikes.

2. 2

   Access the Valve Block

   Clean the area around the transmission control valve block thoroughly to prevent dirt from entering the hydraulic system.

3. 3

   Disconnect Wiring

   Unplug the wiring harness connector from the Low Clutch Solenoid.

4. 4

   Remove the Solenoid

   Remove the retaining nut or mounting bolts holding the solenoid coil/valve cartridge in place. Carefully pull the solenoid cartridge out of the transmission valve body.

5. 5

   Install the New Part

   Lubricate the O-rings on the new solenoid valve with clean transmission hydraulic fluid. Insert the new solenoid into the valve block and torque the retaining fastener to OEM specifications.

6. 6

   Reconnect and Reassemble

   Reconnect the electrical harness to the new solenoid. Reconnect the tractor's battery.

7. 7

   Calibration

   Connect the Case IH Electronic Service Tool (EST) or use the tractor's onboard H-Menu diagnostic screen to clear the inactive 517962-04 fault code. You must then perform a transmission clutch calibration procedure so the DEC can learn the fill times and engagement characteristics of the new low clutch solenoid.