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17887/ P1479/005241 - Brake Boost Vacuum System: Mechanical Failure
Possible Causes
Fuse(s) faulty
if the blade wheel (rotor) in the vacuum pump is stuck, most probably a fuse will burn
Hoses from/to Brake Boost Vacuum Pump faulty
Brake Boost Vacuum Pump faulty
the blade wheel (rotor) in the vacuum pump is stuck
Possible Solutions
Check / replace fuses
check if the blade wheel (rotor) of the vacuum pump is stuck, otherwise the fuse will burn again
Check Hoses from/to Brake Boost Vacuum Pump
Check Brake Boost Vacuum Pump
check if blade wheel (rotor) is stuck
Perform Output Test
Perform Short Trip in Basic Settings. Group 008 is commonly the self test for this system and may be activated Key On, Engine Off. If needed activate basic settings using [On/Off/Next] and pump the brake pedal.