After a long period of inactivity or after replacing the pump, the central shut-off device becomes ready for operation only after several activations.
During normal operation, all locks are locked in about 2 seconds. If the locking time is more than 5-7 seconds, the cause is a leak. If the leak is broken, the control unit switches off the pump no later than 35 seconds later to avoid overheating.
For the central locking device to work properly, the battery must be charged and fuse #19 must be OK. If necessary, check the voltage supply of the injection pump according to the diagram.
If the system is not hermetically sealed, disconnect the hoses from the pump on the branch in sequence. Leave the pump running, holding the corresponding connector on the branch to determine the leaky place. Replace the leaky switching element or hose.
1 - 2 stage pump
2 - control/blocking element
Front left door.
3 - control/blocking element
Front right door.
4 - blocking element
5 - blocking element
6 - trunk lid locking element
7 - X-shaped connection
Installation location: in the trunk, on the right side of the wheel arch.
8 - T-joint
Installation location: in front of the front outer guide of the front seat.
9 - T-joint
Installation location: in front of the front outer guide of the front seat
10 - cable clamp
For fastening wires to the body
11 - cable terminal Inserted onto the fuel tank flange
12 - guide
13 - casing
14 - pipeline
15 - electrical wire
The fuel cap lock element from 9.89 is missing in Fig.
(The article is a reprint of material from «AudiManual.ru»)