Massey Ferguson 13.03.09 – TRANS1: Air Brake Solenoid Issue

The tractor's electronic control system has detected a malfunction in the circuit or operation of the air brake solenoid valve. This typically indicates an electrical fault (such as an open circuit, short circuit to ground, or short to power) or a mechanical failure of the solenoid coil that controls the pneumatic trailer brakes or tractor air brakes.

• 7724S
• 5712SL
• 7722S
• 7722
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714S
• 7719S

1. 1

   Inspect the wiring harness leading to the air brake solenoid valve for chafing, breaks, or melted insulation. Check the connector for corrosion, moisture, or pushed-out pins.

2. 2

   Check for proper voltage (typically 12V) at the solenoid connector when the brakes are applied.

3. 3

   Measure the resistance (Ohms) across the solenoid coil pins. An infinite reading indicates an open circuit (blown coil), while a reading of 0 indicates a dead short.

4. 4

   Check for continuity between the TRANS1 module harness and the solenoid connector to rule out a broken wire in the chassis harness.

5. 5

   Ensure the tractor's air compressor is building and maintaining proper system pressure. A severe air leak can sometimes cause secondary solenoid actuation issues.

1. 1

   Safety First

   Park the tractor on a level surface, engage the park lock, turn off the engine, and disconnect the negative battery terminal.

2. 2

   Depressurize the System

   Safely drain the air from the tractor's pneumatic brake reservoirs using the drain lanyards/valves to prevent injury when removing the valve.

3. 3

   Locate the Valve

   Locate the air brake solenoid valve assembly (typically mounted on the chassis near the transmission housing or air tanks).

4. 4

   Disconnect

   Unplug the electrical connector from the solenoid.

5. 5

   Remove Air Lines

   Mark the pneumatic lines for reinstallation, then push in the quick-release collars (or loosen the threaded fittings) to remove the air lines from the valve body.

6. 6

   Remove and Replace

   Unbolt the solenoid valve bracket from the chassis. Mount the new OEM replacement valve.

7. 7

   Reassemble

   Reconnect the air lines securely and plug in the electrical connector.

8. 8

   Test

   Reconnect the battery, start the tractor, and allow the air system to build pressure. Test the brake operation and check for air leaks with soapy water.

9. 9

   Clear Codes

   Use the tractor's dashboard diagnostic menu or a dealer service tool to clear the 13.03.09 inactive fault code from the TRANS1 module.