Massey Ferguson 13.01.45 – HITCH: Park Brake Activated Solenoid Voltage Issue Dyna 6 (HITCH)

The controller has detected an incorrect voltage reading (such as a short circuit, open circuit, or out-of-range voltage) on the electrical circuit responsible for the solenoid that activates the parking brake.

• 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
• 5611
• 5612
• 5613
• 5709SL
• 6613
• 6614
• 6615
• 6616
• 6713 S
• 6714 S
• 6715 S
• 6716 S
• 6718 S
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 6S.135
• 6S.145
• 6S.155
• 6S.165
• 6S.180

1. 1

   Test the battery and alternator voltage with a multimeter to rule out a weak battery or failing alternator causing erroneous voltage codes

2. 2

   Inspect the wiring harness running from the HITCH module to the transmission brake block for chafed wires, melted insulation, or breaks

3. 3

   Disconnect the plug at the park brake solenoid and check the terminals for dirt, moisture, or corrosion

4. 4

   Use a multimeter to test the resistance (Ohms) of the park brake activated solenoid coil to check for an internal short or open circuit

1. 1

   Disconnect Power

   Always disconnect the battery terminals (negative first) before working on the tractor's electrical system to prevent short circuits.

2. 2

   Clean Connections

   If the wiring is intact but the connector is dirty, clean the terminals with a wire brush and electrical contact cleaner. Apply dielectric grease before reconnecting to ensure a solid connection and prevent future corrosion.

3. 3

   Locate Brake Block

   If the solenoid fails the multimeter test, locate the brake block on the side of the Dyna 6 transmission.

4. 4

   Remove Solenoid

   Remove the retaining nut or clip holding the solenoid coil to the valve stem.

5. 5

   Install New Solenoid

   Slide the old solenoid off and install the new OEM solenoid or solenoid kit.

6. 6

   Reconnect Components

   Reconnect the wiring harness and the battery.

7. 7

   Test and Verify

   Clear the fault codes from the system and test the park brake engagement/disengagement to verify the repair.