2. Disconnect the hose from the vacuum regulator.
3. Start the engine, bring the crankshaft speed to 1000 rpm, put the selector lever in the position «D» and read the pressure gauge with the vehicle stationary.
Note. Working pressure is not regulated. Its value indicates only the operability of the spool and the working pressure regulator of the hydraulic unit.
4. Before proceeding to check the working pressure, the modulating pressure must be finely adjusted.