New Holland 4133 – EHR: Rear Remote No. 3 Over Voltage

The Electro-Hydraulic Remote (EHR) control module has detected an over voltage condition in the electrical circuit for the #3 rear remote valve. This indicates that the voltage is higher than the expected operational range, which suggests the signal wire may be shorted to a power source, or the solenoid driver circuit within the control module is faulty. This electrical issue directly affects the actuation of the hydraulic valve.

• T8.275
• T8.300
• T8.330
• T8.360
• T8.390
• T8.420
• T7.170
• T7.185
• T7.200
• T7.210
• T7.220
• T7.235
• T7.250
• T7.260
• T7.270

1. 1

   Verify system voltage to ensure the tractor's battery and charging system are functioning correctly, as voltage fluctuations can cause erroneous codes

2. 2

   Visually inspect the wiring harness leading from the main chassis to the #3 rear remote valve for chafing, melting, or corrosion on the connectors

3. 3

   Perform a voltage test at the solenoid: with the tractor on and remote lever in neutral, check for 0 volts across the solenoid wires. Activate the lever; voltage should increase steadily to approximately 5 to 7 volts at full detent. A constant high voltage confirms a short circuit or faulty controller

4. 4

   Swap electrical connectors between the #3 remote valve and an adjacent functioning remote (e.g., #2 or #4). If the fault code changes to the other remote, the issue is with the control lever or armrest controller. If 4133 remains, the problem is in the wiring or the #3 solenoid

1. 1

   Secure the machine

   Park the tractor on a level surface, turn off the engine, remove the key, and engage the parking brake.

2. 2

   Repair wiring harness

   If a short to power is found in the harness during diagnostics, repair the damaged section and ensure the repair is sealed against moisture and vibration.

3. 3

   Replace solenoid

   If the solenoid is faulty, relieve residual hydraulic pressure, disconnect the electrical connector, remove the retaining nut, and slide the coil off the valve stem. Install the new solenoid, seat o-rings correctly, re-torque the nut to spec, and reconnect.

4. 4

   Calibrate system

   Perform a calibration routine through the tractor's instrument cluster display via the 'H' menu or with the New Holland Electronic Service Tool (EST).

5. 5

   Clear codes and test

   Clear the stored fault codes using the instrument cluster menu or EST, then start the tractor and thoroughly test the function of the #3 rear remote.