W201 190 central locking

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Michaeljw

New Member
Joined
Oct 6, 2014
Messages
1
Car
190d
So my central locking works fine if I use the key on the passenger side but if I use the key on the drivers side it only does that door and does not activate the central locking, the same happens if I look the door from the inside.

I thought it may be the actuator so went into the door and unplugged the lead.
I worked out which was the constant live and neutral, I presume the third wire is the activation for the central locking. Applying power to the third wire did nothing, therefore I presume it's more likely to be an issue with the wiring that the actuator.

I appreciate it's a vacuum system and pump under the rear sea but....

I have no idea where the wiring goes, whether there is a central control unit or where the problem could be.


Anyone had this before or have a wiring diagram or can explain whether there is a control unit, jct box etc? If I could trace that wire I could check it for continuity... Which may help.
 
Has your car got an aftermarket alarm fitted? Alot of them need the trigger wire from the drivers door lock to be messed with...
 

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