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Automotive Pneumatic Locking Circuit Configuration Diagram

2017-01-08 19:57  
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The circuit diagram shown below appears one wire vaccum control of pneumatic locking which is popular withJaguar, AudiandMercedes Pneumatic. It uses two Dynamico relays with wire colors in it (BK, BU, BN, WT, RE, GY and etc).

Mercedes Pneumatic Lock Relay Diagram

Accordingly, the central locking trigger wire is usually found in the driver’s kick panel. Voltage changes between 12V and ground when lock position changes. New voltages remains until locks are moved back (thick green or thick blue). Central locking pulse time must be set to 3 seconds in which refer to alarm immobiliser instructions. if you find reverse central lock operation, then just swap the “87” connections.