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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Volkswagen Passat B3 / B4 (c 1988 and 1996 model year)

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Volkswagen Passat B3 / B4
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central locking






The central locking system is operated keys to open the driver's door or passenger. When the key is closed micro switch mounted in the handle of the door, and there is an operation of the system. Central locking system - air. Drive activators on the fuel filter, the rear cover and on each of the four doors provided with compressed air. DIP switches in the door handle includes a vacuum-pressure pump, which is mounted in the trunk. Locking and unlocking activator occurs under the influence of high pressure or vacuum created by the pump.
In case of failure of the system in the proper pump most likely cause is a leak in the pipes or malfunction activators.

A WARNING
If vacuum-pressure pump runs long enough, it comes off automatically. If the system is not used for a long time, to run the pump may have to turn the key a few times.




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Troubleshooting vacuum pressure line

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