Massey Ferguson 04.X.A6 – TRANS: Issue With Transmission Actuator Internal Position Sensor (TRANS)

Malfunction or irregular reading from the internal position sensor located inside the transmission actuator unit, which is responsible for transmission speed control.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• Interim Tier 4 (2012-2015)

1. 1

   Check the wiring harness and connectors leading to the transmission actuator unit for corrosion, loose pins, or chafed wires that could cause a loss of signal voltage.

2. 2

   Verify that the transmission actuator is communicating properly on the CAN BUS network (look for related code 04.X.B0 which can trigger alongside sensor faults if the harness is damaged).

3. 3

   Attempt to recalibrate the transmission actuator via the tractor terminal before condemning the actuator unit as the sensor requires calibration through the terminal interface.

1. 1

   Locate

   Locate the slim-line transmission actuator unit on the DYNA VT transmission.

2. 2

   Disconnect

   Disconnect the electrical harness connected to the actuator.

3. 3

   Remove

   Unbolt and remove the faulty transmission actuator unit.

4. 4

   Install

   Install the new transmission actuator and torque the mounting hardware to the specifications outlined in the workshop manual.

5. 5

   Reconnect

   Reconnect the electrical harness.

6. 6

   Calibrate

   Perform a mandatory transmission actuator calibration using the tractor terminal (Datatronic / Auto5 controller) so the TRANS module can learn the new internal position sensor's end-stops and travel range.