Massey Ferguson 13.01.42 – HITCH: Park Brake Released Solenoid Low Amp Draw Dyna 6

The control module has detected that the electrical current (amperage) flowing through the circuit for the park brake release solenoid is lower than the expected threshold. This typically indicates an open circuit, a disconnected plug, broken wiring, high electrical resistance due to corrosion, or a completely failed (open) solenoid coil.

• 7724S
• 5712SL
• 7722
• 7722S
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 6400 Series
• 6465
• 6497
• 6499
• 7600 Series
• 7614
• 7615
• 7618
• 7624
• 7700 Series
• 7700 S Series
• 8S Series
• 8S.205
• 8S.265

1. 1

   Visually inspect the wiring harness leading to the Park Brake Released Solenoid for chafing, cuts, or melted insulation.

2. 2

   Disconnect the solenoid plug and check for pushed-out pins, water ingress, or green corrosion.

3. 3

   Perform a resistance test (Ohms) across the pins of the solenoid coil using a multimeter. An infinite reading (OL) confirms the internal coil is broken (open circuit).

4. 4

   Turn the key ON and command the park brake to release. Check for proper supply voltage at the harness connector to rule out a broken wire between the HITCH ECU and the solenoid.

1. 1

   Secure the Tractor

   Park the tractor on a flat, level surface. Crucial: Chock the wheels securely, as disabling the solenoid could cause the tractor to roll if the brake disengages.

2. 2

   Locate the Solenoid

   Identify the Park Brake Released Solenoid on the transmission's ParkLock hydraulic valve block.

3. 3

   Disconnect Power

   Turn off the battery isolator switch to prevent short circuits.

4. 4

   Remove the Solenoid Coil

   Unplug the electrical connector. Remove the retaining nut or clip at the top of the solenoid stem.

5. 5

   Replace the Coil

   Slide the old solenoid coil off the hydraulic valve cartridge.

6. 6

   Reassembly

   Slide the new solenoid coil onto the stem, secure the retaining nut, and plug in the electrical connector.

7. 7

   Calibration/Clearing

   Turn the battery isolator back on. Use the tractor's dashboard Setup and Information Screen (SIS) or a diagnostic tool to clear the fault codes. Test the park brake engagement and release to ensure the code does not return.