Case IH 4156 – Electronic Control Unit (ECU): Rear remote no. 5 - no control message received

Communication failure on the CAN bus network. The main controller is not receiving the expected electronic control messages from the Electronic Hydraulic Remote (EHR) valve number 5.

• Magnum
• Maxxum
• Steiger T4B
• Puma 125
• Puma 165
• Puma 180
• Puma 195
• Puma 210
• Puma 225
• Puma CVX
• Magnum MX210
• Magnum MX230
• Magnum MX255
• Magnum MX285
• Steiger Series
• Axial-Flow 7230
• Axial-Flow 8230
• Axial-Flow 9230

1. 1

   Inspect the EHR valve connector (C206) for loose pins, moisture, or corrosion

2. 2

   Check the wiring harness between the ECU and the rear remote for continuity, shorts to ground, or broken wires

3. 3

   If wiring and connectors pass inspection, check the electronic module on the EHR valve itself for failure

1. 1

   Locate valve

   Locate Rear Remote Valve No. 5 at the rear hydraulic block.

2. 2

   Inspect connector

   Disconnect the EHR valve connector (C206) and inspect the terminals. Clean or repair the connector if damage or corrosion is found.

3. 3

   Test harness

   Perform a continuity test on the harness back to the ECU. Repair any wiring faults.

4. 4

   Replace valve

   If the harness and connector are functioning properly, replace the faulty EHR valve.

5. 5

   Clear code

   Once the physical repair is complete, use the Electronic Service Tool (EST) to clear the error code.

6. 6

   Test system

   Test the hydraulic remote system to verify normal operation and ensure the code does not return.