Required accessories and special tools:

– special tool (Bvi1215-01);

  • - kit for checking the oil pressure in the automatic transmission (in a case);
  • - 25 bar pressure gauge

Some automatic transmission diagnostic procedures require you to measure the pressure in the pressure line using a pressure gauge.

The hole for connecting the control pressure gauge is located next to the pressure sensor.

Discharge port: 1 - bolt

To check the pressure in the pressure line, unscrew the pressure port bolt (fig. 1).

Connect the reference pressure gauge.

Check with a hot engine at an oil temperature in the gearbox of 60–80 °C.

Check the oil pressure in the pressure line under the following conditions:

  • – selector lever in position “P” or “N”, engine speed 2000 min–1.</li >

The pressure should be between 2.6–3.2 bar;

  • – selector lever in position “R”, engine speed 2000 min–1.

Pressure must be above 4 bar;

  • - selector lever in position "D", engine speed 2000 min-1.

The pressure in 1st gear must be above 7 bar.

If the problem persists, the cause is a mechanical or hydraulic fault in the transmission.

To determine the cause of the failure, check that all states and parameters match.

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