CLAAS 7687h – Claas Tr3 A57 3 Transmission Module: Steering Pressure Drop and Engine Speed Drop

The Powertrain CAN bus indicates a major drop in engine speed and a steering pressure below 9 bar for 4 seconds. The cause is identified as the PTO being off. This issue requires checking the steering pressure sensor, steering pressure, Powertrain CAN bus network, and the “Auto 5” module.

1. 1

   The steering pressure sensor (Z154)

2. 2

   The steering pressure

3. 3

   The Powertrain CAN bus network

4. 4

   The “Auto 5” module using tool n° 60 05 033 249

1. 1

   Check

   The steering pressure sensor (Z154) for proper function and connection.

2. 2

   Check

   The steering pressure to ensure it meets the required specifications.

3. 3

   Check

   The Powertrain CAN bus network for any faults or disruptions.

4. 4

   Inspect and test

   The “Auto 5” module using tool n° 60 05 033 249. Replace if required.