audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Scan Tool Testing and Procedures > < Vehicle Diagnostic Testing and Information System VAS5051 or Scan Tool VAG1551, Connecting|Page 7329

A4 Quattro Cabriolet V6-3.2L (BKH) (2007)

Page 1
background image

Vacuum Pump: Initial Inspection and Diagnostic Overview
Description and Function

Description and function

Only vehicles with automatic transmission are equipped with an electric vacuum pump. It is switched on by the engine control module, depending on
intake manifold pressure.

The vacuum pump can be tested with On Board Diagnostic (OBD): any detected malfunctions are stored in the engine control module.

The engine must not be running when checking the function of the electrical vacuum pump via (OBD).

Scan Tool Testing and Procedures > < Vehicle Diagnostic Testing and Information System VAS5051 or Scan Tool VAG1551, Connecting|Page 7329