Brake System Vacuum Pump V192, Electrical Check

^ V.A.G 1526 B Hand multimeter
^ V.A.G. 1598/31 Adapter set

Test prerequisites
^ Fuses 51 and 31 must be OK (remove fuses from fuse holder to check).





^ Remove the 6 - pole contact.

Multi-pin connector with contact assignment

Note: All contacts not listed are currently not assigned and must never be connected to other components!





Contact assignment of connectors for voltage supply and diagnosis.
Contact 1 = Ground
Contact 2 = Connection with engine control module (pin 22)
Contact 3 = Voltage supply from ignition/starter switch through fuse 31
Contact 4 = Not applicable
Contact 5 = Voltage supply from Battery + through fuse 51
Contact 6 = Not applicable





Test step overview





Test table (test steps 1-6)

Notes on test table
^ The socket designations of adapter V.A.G 1598/31 (for test step 2) are identical to the engine control unit contact designations in wiring diagram.
Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
^ If the readings obtained deviate from the specifications, carry out repair measure in the right hand part of the table.
Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
^ If the measured figures only deviate slightly from the specifications, clean sockets and plugs of the testers and adapter cables (with contact spray G 000 700 04) and repeat check. Before replacing components, check wiring and connections, and particularly for specifications of less than 10 Ohms, repeat resistance check on the component.





Test step 1






Test step 2









Test step 3









Test step 4

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Test step 5

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Test step 6