Thread: Disco1 central locking

I'd wonder if it's been tied in with the interior light circuit in any way

I understood the original drivers door is the master and control box but I could be wrong.

When mine burnt out I replaced the lot with the Jaycar kit that included the controller. So are you sure you do not have a Jaycar contoller which is in turn controlled by the alarm - that is how mine ended up being set up.

Sorry I cannot answer you question directly but I just ripped out the original motors, replaced with the Jaycar stuff and controller. I never found a specific landrover contoller as such.

Garry

When I bought the Disco it already had the alarm fitted so how it is wired in to the factory locks I can only guess. The driver's door is the only door I have not had apart.

I assume it is wired the same way that I have wired other cars that have factory locking controlled via the driver's door (not remote).

I install a master lock motor in the driver's door which previously had no motor and being a master lock motor it will take the place of the factory microswitch. The rest of the system would be factory as all it knows is that the driver's door lock is being activated so it better let the other locks know what is going on as per usual.

So how does the factory locking system get told what the driver's door lock is doing?

As for the interior light being in the same circuit, it doesn't come on with the alarm or the locks and it wasn't mentioned in the circuit in RAVE.

I could just install a Jaycar control box but I'd like to keep it as original as I can if I can. It never used to do this so hopefully there is a fault to fix somewhere.

I don't think it has the full Jaycar setup at the moment as the Jaycar (any aftermarket) setup has a control box that controls ALL the motors. Whereas at the moment the driver's door is definately getting the signal first and strongest as it would with the setup I described above.

The RAVE manual in the electrical troubleshooting section states that there is a solid state load sensor/timer to ensure the door lock motors only operate for the time required to lock or unlock the doors.

So there must be a control box somewhere. I'll take the driver's door apart on Sunday and see what is inside if nothing comes up before then.

You may have a power or earth problem. The bit about the locks now only working (mostly) engine on/shortly thereafter points toward the function of the windows in that the ECU will allow window operation keys out for 45 secs. So if this situation is new, then check to see if the aftermarket locks are powered correctly. If there was no factory alarm fitted, then there is no ECU as such for central locking - you're right that the master unit controls the rest. The bit about the load sensor refers to inbuilt design, not exterior control. Clean up your master unit and it should be back to normal.

I don't really follow what you are saying Langy but I'll open up the driver's door on Sunday and see what's what.
There must be something that times the power to the locks and reverses the polarity for lock/unlock even without the factory alarm.

The problem has nothing to do with the electric windows as the locks sometimes only work properly when engine is running or shortly after but they try to work all the time (driver's door lock always works). The electric windows always work fine.

The problem is definately between the driver's door lock and the other locks and appears to be a voltage drop which is why I wanted to find the control box. Hopefully all will fall into place once I get into the driver's door.

I just came in after playing with the Disco. I started with the alarm unit to see how it was wired (easiest thing to get to) and found that every single wire join was just twisted and taped. Now I know that some people are quite happy to do this and the joins did look fine but I am the soldering type so I redid every connection. I also replaced a fuse so now all the indicators work on arm/disarm instead of just the RHS indicators.
It appears that there are two wires that disappear from the alarm into the driver's door so I presume they are for the central locking (no aftermarket controller unless it is in the door). So when I get some more time this afternoon or tomorrow I'll pull the driver's door apart. No doubt they have twisted and taped the wires in there as well which although fine under the dash no doubt not so fine in the door with the moisture and dust.

According to the RAVE CD, only the Japanese cars had a central locking control unit. All others are simply controlled by the drivers door lock.