New Holland 1064 – XCM/TMF: EDC Hydraulic Valve Raise Solenoid Open Circuit

The control module has detected a loss of continuity (an open circuit) in the electrical circuit for the Electronic Draft Control (EDC) hydraulic raise solenoid. This fault prevents proper operation of the affected circuit, directly impacting the functionality of the hydraulic system associated with the solenoid lift, such as the three-point hitch. The issue is typically caused by a failed solenoid coil, a broken wire, or a loose or corroded connector.

• T5.110
• T5.120
• T6010
• T6020
• T6030
• T6040
• T6050
• T6060
• T6070
• T6080
• T6090
• T4
• T5
• T7
• T8
• TM115
• TM120
• TM125
• TM130
• TM135
• TM140
• TM150
• TM155
• TM165
• TM175
• TM190
• TS100A
• TS115A
• TS125A
• TS135A
• 8870

1. 1

   Use the tractor's diagnostic 'H' menu (Menu H9, Channel 18) to check the live current of the EDC Valve Raise Solenoid. An unchanging value of 0 while attempting to raise the hitch strongly suggests an open circuit.

2. 2

   Visually inspect the wiring harness leading to the EDC valve assembly at the rear of the tractor for chafing, breaks, or corrosion. Ensure all connectors are clean and securely fastened.

3. 3

   Perform a solenoid resistance test by disconnecting the electrical connector from the raise solenoid and measuring resistance across the terminals. Infinite resistance ('OL') indicates a broken wire inside the coil.

4. 4

   Perform a harness continuity test by disconnecting the harness from both the solenoid and the main controller (XCM/TMF). Check the continuity of each wire from the controller connector pin to the corresponding pin at the solenoid connector.

1. 1

   Confirm fault and isolate cause

   Verify fault code 1064 is active and use diagnostic checks to isolate the failure to the solenoid, wiring harness, or controller.

2. 2

   Repair or replace wiring harness

   If continuity testing reveals a break in the wiring harness, repair the broken wire using appropriate sealed connectors to prevent moisture ingress, or replace the damaged harness section.

3. 3

   Replace EDC raise solenoid

   If the solenoid has infinite resistance, ensure the hydraulic system is not under pressure and clean the area. Remove the faulty solenoid (expect minor fluid leakage), install the new solenoid with lubricated o-rings, torque to manufacturer specifications, and reconnect the electrical connector.

4. 4

   Clear fault codes

   Reconnect the battery, turn the ignition on, and use the tractor's diagnostic interface or service tool to clear the stored error codes.

5. 5

   Test system operation

   Operate the three-point hitch raise and lower functions to ensure normal operation. Check for any new fault codes. Perform an EDC calibration procedure if required for your specific model.