CLAAS 7622h – Claas Tr2 A57 2 Transmission Module: High-Pressure Brake Pressure Not Dropping or Too High

The pressure of the high-pressure brakes does not drop as expected or is too high. This is indicated by an audio warning and a blinking brake indicator light. The issue may be related to the hydraulic circuit, the braking pressure sensor, or the high pressure braking solenoid valve.

1. 1

   The hydraulic circuit (valve, pipes, switch…)

2. 2

   The braking pressure sensor (B233)

3. 3

   The high pressure braking solenoid valve (Y329)

1. 1

   Inspect

   Inspect the hydraulic circuit for leaks, blockages, or damage.

2. 2

   Test

   Test the braking pressure sensor (B233) for proper function.

3. 3

   Check

   Check the high pressure braking solenoid valve (Y329) for proper operation.

4. 4

   Use diagnostic tool

   Use the “Auto 5” module with tool n° 60 05 033 249 to diagnose and change the component if required.