Case IH EHR4152 – EHR: Rear Remote No.4 Output Stage Faulty

The fault code indicates a problem with the electrical circuit that controls the hydraulic solenoid for the number four rear remote valve. The EHR (Electronic Hitch and Remote) control module has detected an issue such as a short circuit, an open circuit, or an out-of-range current draw in the output stage circuit. This will likely affect the proper operation of the component associated with this output stage.

• Magnum 215
• Magnum 235
• Magnum 245
• Magnum 250
• Magnum 260
• Magnum 275
• Magnum 290
• Magnum 305
• Magnum 310
• Magnum 315
• Magnum 335
• Magnum 340
• Magnum 370
• Magnum 380

1. 1

   Visually inspect the wiring harness leading to the number four rear remote valve for chafing, melting, or corrosion. On articulated tractors like the Quadtrac, pay close attention to the harness in the articulation area, as this is a common point of wear.

2. 2

   Disconnect and inspect the electrical connector at the number four remote valve solenoid. Ensure pins are clean, straight, and free of corrosion, then re-seat firmly.

3. 3

   Perform a swap test: swap the electrical connector from the number four remote with an adjacent functioning remote (e.g., number three or five). Clear codes and operate. If the fault moves to the new remote, the wiring or EHR controller is faulty. If EHR4152 returns, the solenoid is faulty.

4. 4

   Perform a continuity test: with the connector unplugged, check for continuity to ground on the power wire in the harness (there should be none).

5. 5

   Perform a short to power test: check for voltage on the ground wire in the harness with the key on (there should be no voltage).

6. 6

   Measure the resistance across the two pins of the solenoid and compare the reading to a known good solenoid from an adjacent remote valve.

1. 1

   Repair wiring harness

   If a fault is found in the wiring harness (broken wire or corroded connector), repair or replace the damaged section. Ensure all connections are secure and protected from the elements.

2. 2

   Replace solenoid

   If the solenoid is faulty, turn off the tractor and depressurize the hydraulic system. Disconnect the electrical connector, remove the retaining nut/clip, slide the old solenoid off the valve stem, install the new solenoid, tighten to manufacturer specification, and reconnect.

3. 3

   Replace EHR control module

   If the wiring and solenoid are confirmed to be in good working order, the EHR control module itself may be at fault. Replace and program the EHR module as a last resort.

4. 4

   Verify repair

   Clear all fault codes from the system and operate the number four remote valve to verify that the repair has been successful.