Massey Ferguson 13.00.15 – TRANS1: Park Brake Release Solenoid Open Circuit Dyna VT (TRANS1)

The transmission control module has detected a break in the electrical circuit that controls the park brake release solenoid. Because the circuit is "open," electrical current cannot flow, meaning the solenoid cannot energize to release the parking brake. This is typically caused by a disconnected wire, a broken harness, corroded connector pins, or a failed (burnt out) internal solenoid coil.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• 5700 SL Series
• 5709SL
• 5710SL
• 5711SL
• 6S Series
• 6S.135
• 6S.145
• 6S.165
• 6S.180
• 6700 S Series
• 6713 S
• 6714 S
• 6715 S
• 6716 S
• 6718 S
• 7600 Series
• 7700 Series
• 7700 S Series
• 8600 Series
• 8700 S Series
• 8727 S
• 8730 S
• 8737 S
• 8740 S

1. 1

   Visual Inspection: Locate the park brake release solenoid on the transmission valve block. Inspect the wiring harness leading to it for chafing, rodent damage, or breaks.

2. 2

   Connector Check: Disconnect the plug at the solenoid. Check for pushed-back pins, water ingress, or corrosion.

3. 3

   Solenoid Resistance Test: Using a multimeter, measure the resistance across the pins of the solenoid itself. If it reads out of limits (OL) or infinite resistance, the solenoid coil is internally broken and must be replaced.

4. 4

   Harness Continuity Test: If the solenoid tests good, check the continuity of the wiring harness from the solenoid connector back to the TRANS1 ECU pins.

1. 1

   Secure the Machine

   Park the tractor on a flat, level surface. Critically important: Chock the wheels securely. Because you are working on the park brake system, releasing or removing the solenoid could cause the tractor to roll.

2. 2

   Clean the Area

   Thoroughly clean the transmission housing around the park brake release solenoid to prevent dirt from entering the hydraulic system.

3. 3

   Disconnect Electronics

   Unplug the electrical connector from the faulty solenoid.

4. 4

   Remove the Solenoid

   Remove the retaining nut/bolts holding the solenoid coil or cartridge valve in place and carefully extract it from the transmission block.

5. 5

   Install the New Part

   Lubricate the O-rings on the new solenoid with clean transmission fluid. Insert the new solenoid and tighten the retaining hardware to OEM torque specifications.

6. 6

   Reconnect and Clear

   Reconnect the wiring harness. Turn on the tractor's ignition and use a diagnostic tool to clear the 13.00.15 fault code from the TRANS1 module.

7. 7

   Test Operation

   Start the tractor and cycle the park brake on and off to ensure it engages and releases properly without throwing the code again.