audi Workshop Repair Guides

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Vacuum Vent Valve: Testing and Inspection

Fig. 1  Control Unit Harness Connector Terminal Identification

1.

Turn the ignition switch to the On position.

2.

Touch a jumper wire between control unit harness connector terminal 7 and ground, refer to Fig. 1.

3.

If the vent valve fails to click, replace defective vacuum pump.

4.

If valve clicks, check speed signal.

Cruise Control > Vacuum Vent Valve, Cruise Control > Component Information > Testing and Inspection

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