This function is used to release the pressure in the common rail system. The pressure in the system is very high and needs to be released before work on the engine is performed.
Note:
If the common rail pressure already is below 100 kPa, is this test not necessary.
Test conditions:
Ignition on, engine off.
Transmission in neutral.
Procedure:
Press "OK" to start the function.
Check that the value is below 100 kPa.
Function complete.
If the function fails, check the test conditions and repair any faults.