Case IH 4213 – TCU, Armrest Controller, UCM, or XCM: Short circuit to ground at clutch K2 / EHR 3 Message counter error or Valve command different from valve feedback

Code 4213 indicates a short circuit to ground at clutch K2 (or Engine Crank Without Fuel Injection in J1939). An EHR 3 error indicates a CAN bus communication issue (message counter error) or a mechanical bind/failed position sensor causing the valve command to differ from valve feedback.

• MAXXUM T4E
• Maxxum
• Puma
• Optum
• Magnum
• Steiger

1. 1

   For EHR 3 Mismatch/Communication: Check the CAN bus wiring and connections between the armrest controller, the UCM, and the EHR 3 valve.

2. 2

   For EHR 3 Mismatch/Communication: Verify if other EHR valves (e.g., EHR 4) are also experiencing communication errors, which would indicate a shared CAN bus issue rather than a single valve failure.

3. 3

   For EHR 3 Mismatch/Communication: Attempt to recalibrate the remote valves via the tractor's display (e.g., AFS Connect monitor).

4. 4

   For Code 4213 (Clutch K2 Short): Inspect the transmission wiring harness leading to the K2 clutch solenoid for chafing or a short to ground.

1. 1

   Connect diagnostic tool

   Connect a diagnostic tool (such as Jaltest or the Case IH EST) to read the active fault codes, ECU data, and verify which module is flagging the error.

2. 2

   Perform valve calibration

   If diagnosing the EHR 3 valve: Navigate to the remote valve configuration/calibration menu (H-Menu or AFS display) and perform a valve calibration.

3. 3

   Inspect EHR 3 valve spool

   If calibration fails due to a feedback mismatch, inspect the EHR 3 valve spool for debris, contamination, or mechanical binding.

4. 4

   Check electrical connector

   Check the electrical connector at the EHR 3 valve for corrosion or damaged pins causing the 'message counter error'.

5. 5

   Repair K2 clutch wiring

   If diagnosing the 4213 K2 Clutch code: Locate the K2 clutch solenoid on the transmission valve body. Repair any shorted wiring to ground.

6. 6

   Replace faulty components

   Replace the faulty EHR valve slice or K2 clutch solenoid if internal electrical/mechanical failure is confirmed.

7. 7

   Clear codes and test

   Clear the fault codes and test operate the tractor's hydraulics or transmission to verify the repair.