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Home >> Volkswagen >> 2003 >> Passat Sedan (3B3) L4-1.8L Turbo (AWM) >> Repair and Diagnosis >> Cruise Control >> Testing and Inspection >> Scan Tool Testing and Procedures >> Cruise Control System (Css) W/O Electronic Power Control (EPC)
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Cruise Control System (Css) W/O Electronic Power Control (EPC)



Cruise Control System (CSS) W/O Electronic Power Control (EPC)

Vacuum System, Checking For Leaks

- Remove vacuum hose from vacuum pump seal off.
- Remove lower instrument panel cover, left.
- Push servo unit diaphragm in, to do this press brake pedal down by hand until pressure point.
- Then release brake pedal.

The diaphragm must not move.


NOTE: Malfunctions can be caused by an incorrectly adjusted vent valve, leaking servo unit or through cracks in the vacuum hoses.