Preconditions for the test:
Engine idling.
No faults stored.
All electrical loads switched off.
Gear selector set to ”P/N”.
Note:
Used to test the brake system vacuum pump.
For vehicles with automatic transmission only.
Procedure:
Choose the function: Vacuum pump, brake system.
Press and hold down the brake pedal.
The diagnostic status field will change from ”Test off” to ”Test on”.
Hold down the brake pedal until the diagnostic status field changes from ”Test on” to ”Syst. OK! / Syst. not OK!”.