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Test sequence > < Checking voltage supply of secondary air pump motor V101

A4 Mk1

Checking combination valve for secondary air system for proper operation and leakage
Checking combination valve for secondary air system for proper operation and leakage
Special tools and workshop equipment required
   
t  Hand-operated vacuum pump -V.A.G 1390-
  Note!
t  Vacuum hoses and hose connections do not leak.
t  Vacuum hoses are not clogged.
  W00-0515

Test sequence > < Checking voltage supply of secondary air pump motor V101