ECU and BCU compatibility

Thank you for the reply and continuing to engage in this discussion.
There is no micro switches associated with the door button . When the door button is pressed down or pulled up it acts (indirectly) on the quadrant. Once the quadrant rotates through its arc the associated switch will change its state, and as far as I can see there is nothing to tell the system that it has completed the required movement other than possibly the switch associated with the key (the lever associated with the key locates in the quadrant with some degree of freedom of movement.

If that micro switch associated with key movement ‘sticks” in a position telling the 5AS to lock the door I can foresee a situation where the 5AS does not know what to do and potentially changes the instruction to lock the car.
In that scenario the quadrant motor will change direction to lock and if the 5AS has a timer used to ensure that the quadrant moves to unlock the car it would be possible to see a condition where the system locks/unlocks rapidly.
A lot probably depends on how the 5AS is programmed.
In my view the micro switch telling the system that the door is shut plays no part in this it is simply there to warn the driver that a door is not closed properly.

I will stop responding to this thread and I will stand corrected if you tell me that you do not have 2 connectors coming from you drivers door actuator: 6-way plug and 2-way plug.

6-way plug:
Pin 1: Lock motor direction wire 1 Orange wire 
Pin 2: Drivers door open microswitch Brown/Red wire (microswitch 2) - used in cojunction with boot swith tied with microswitch 1
Pin 3: Sill down from microswitch Black/Pink wire (microswitch 1)
Pin 4: Lock/Superlock motor direction wire 2 Pink wire
Pin 5: Superlock motor wire Brown/Pink wire
Pin 6: Drivers door open microswitch Pink/Grey wire (microswitch 3)

2-way plug
Pin 1: Sill up from microswitch Black/Orange wire (microswitch 1)
Pin 2: Ground/Earth Black wire

All these wires (except ground wire) goes directly to 5AS, or they come from 5AS respectively.
What I would do is use a multimeter and check which microswitch provides signal to which wire and under which case.

If you have these 2 connectors then you are not seeing something correctly.

Please do not get me wrong, I am not proving anything here, I am merely trying to provide correct information for the community and help owners to see things in correct way. If I am wrong in any statement, I will stand corrected, as I said.

Apologies if this is duplicated in some way I was trying to read and write at the same time.
i confirm that the door lock in question has two connectors. One with 6 pins and one with 2. The 5AS is located behind the console and below the heater controls.
At present the car has both door locks responding to key and fob with the exception that it will not respond to a request to superlock. It did prior to the lock change earlier in the year.
I can’t comment on wire colours as the door cards are in place.

I can report that the 6 wires in the lock are coloured blue, pink, green, red, and purple. The pink, green, and purple go to the motors.
The other connector colours are black and grey.
I think that the white and the black are associated with movement of the key.
I think that blue and the black are associated with door status i.e. door open/closed
I think that red and possibly grey are associated with the quadrant micro switch.

The uncertainty is due to the difficulty in operating the switches whilst holding continuity meter probes against the pins for test purposes.and I think there is a broken joint between at least one pin and its wire within the cable connector, and it possible that the faulty connection was responsible for interrupting and confusing the 5AS if the thesis in the responses above are correct.
If I had to guess I think the pin in the middle row at the bottom of the connector (where bottom has the two plastic engagement alignment features) is the most probable source of interruption and again if I’m right that would be the quadrant micro switch. I was reasonably confident that the slide operated switch (that would recognise key operation) was functioning satisfactorily when I bench tested it.

Hope this is of some use to all concerned.

A bit of an update.
I have two door locks available to test (one I removed following a “machine gun” experience and another that I aim to fit as I can’t get superlock working with the one in the car.
So with the connectors lightly gripped in a workbench I tested for continuity between pins with the door locks available open then closed and locked/unlocked.
What I could not confirm with repeatability was the presence of continuity between the pins associated the micro switch that comes into play when using the key (or the same switch that would be activated when the quadrant is moved electrically).
When testing I felt that sometimes there was continuity and sometimes not.
So perhaps that switch is used to indicate one part of the sequence and if it’s continuity switches on/off that would presumably confuse 5AS and create the “machine gun” condition.
Just a thought even if I can’t see a simple solution

Delbourt wrote:

I can’t get superlock working with the one in the car.


 

I'd be counting my blessings, right there!