Central locking problem

[RobfromYork]

Hi.

My 80’s central locking is playing up. It will unlock all doors with the key but will only lock the drivers door. Now I’m very good at taking things apart but I struggle to put them back together again! So is this an easy thing to fault find?

Many thanks

Rob

 

[Richard Turner]

Does it work with the lock/unlock button on the window switches?

 

[RobfromYork]

Does it work with the lock/unlock button on the window switches?

Yes it does which makes me think it’s a electrical contact in the door issue