Massey Ferguson 13.00.19 – TRANS1: Brake System Pressure Too High Dyna VT
Issue description
The system has detected hydraulic pressure in the tractor's braking circuit (often tied to the handbrake or trailer brake system) that exceeds the maximum safe or expected threshold.
Applies to these machines
46 machines- 7714
- 7715
- 7715S
- 7716
- 7716S
- 7718
- 7718S
- 7719
- 7720
- 7720S
- 7722
- 7722S
- 7724
- 7724S
- 7726
- 7726S
- Tier 4 (2015-2021)
- 6614
- 6615
- 6616
- 6713 S
- 6714 S
- 6715 S
- 6716 S
- 6718 S
- 7619
- 7620
- 7622
- 7624
- 7715 S
- 7716 S
- 7718 S
- 7719 S
- 7720 S
- 7722 S
- 7724 S
- 7726 S
- 8660
- 8670
- 8680
- 8690
- 8727
- 8730
- 8732
- 8735
- 8737
Check the cause
Wiring & Connector Inspection: Check the wiring harness leading to the brake pressure sensor for chafing, corrosion, or a short-to-voltage, which can cause the sensor to report an artificially high reading.
Sensor Testing: Use a multimeter to verify the reference voltage and signal output at the sensor connector.
Mechanical Pressure Test: Connect a mechanical hydraulic pressure gauge to the brake circuit test port and compare the actual physical pressure against the sensor's electronic reading to determine if the sensor is faulty or if there is a true hydraulic overpressure issue.
Repair steps
Relieve hydraulic pressure
Park the tractor on a level surface, engage the park lock, turn off the engine, and relieve any residual hydraulic pressure in the brake system by pumping the brake pedals.
Locate sensor
Locate the brake pressure sensor (often designated as the handbrake or trailer brake pressure sensor) on the transmission hydraulic valve block.
Disconnect wiring
Carefully disconnect the electrical wiring harness connector from the sensor.
Remove faulty sensor
Unscrew the faulty pressure sensor from the hydraulic port. Have a rag ready to catch any minor hydraulic fluid drips.
Install new sensor
Install the new OEM pressure sensor and tighten it to the manufacturer's torque specification.
Reconnect wiring
Reconnect the electrical connector, ensuring it clicks securely into place.
Test and clear code
Start the tractor, test the brake and handbrake operation, and use a diagnostic tool to clear the 13.00.19 fault code from the TRANS1 module.
Parts you might need
(5)Brake Pressure Sensor
ACX2770930Ensure the part is specified for Dyna VT transmissions.
Brake Pressure Sensor
4289997M1Ensure the part is specified for Dyna VT transmissions.
Brake Pressure Sensor
G716970020055Also replaces G716970020052, G716970020051, G716970020050. Ensure the part is specified for Dyna VT transmissions.
Brake Pressure Sensor
V837070201Ensure the part is specified for Dyna VT transmissions.
Brake Pressure Sensor
ACW1805880Ensure the part is specified for Dyna VT transmissions.
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