The "system test" item can be selected in the "functions" menu in order to actuate and test certain actuators such as the return pump and the solenoid valves in the vehicle using the HHT. In principle, the safety regulations must be followed during all actuations, and the ABS/ABD or ETS system must be fully connected.
The system test cannot be performed if solenoid valve faults - and -or faults ,,, occur.
The following actuation operations can be performed:
1 Individual actuation
2 Solenoid valve test "with roller dynamometer"
3 Solenoid valve test "without roller dynamometer"
4 ABD testing
5 Speed sensor test
6 Special venting