Rear door lock issue - help needed

[Lee J]

Here's the deal - New shape transit 2001 Y reg.

1. I switch the van off
2. Get out & walk around the back
3. Press the blue button on the remote, doors unlock.
4. Empty van
5. Press the LOCK button on remote and go inside.
6. come back out to reload the van, press the blue button on the remote to unlock the back doors & nothing. I notice by pressing the blue button it switches the interior lights on but does not open the rear doors.
7. Press the UNLOCK button, cab unlocks, press the blue button & cab locks.

WHATS GOING ON?

I still cant get into the rear. Darn van is getting very close to been gone.

[daddy cool]

That's a strange one

Can you unlock the rear doors by pressing the unlock button twice? (not the blue one).

[Gunslinger]

so let me get this right, the rear doors only open from the blue button after you have had the ignition on, turned it off then pressed the blue button

or does it only fail after you have locked the doors via the remote lock all button, and then try using the blue button

because the interior light is coming on then i would start looking to ensure that the motor in the rear door hasnt come lose or something else like that, try testing it by sitting inside with a multi-meter then test out the various combinations that dont work, is it possible that after locking the doors the rear motor is moving or the linkage is causing the motor to return a little thus breaking some sort of contact inside so that when you press the blue button the system thinks the door is already unlocked ?

i am not sure how complicated the control module is on these (rover might have a better idea if he sees this thread) but it could be that playing up a litttle, any chance of sourcing a spare to test it with ?

[Lee J]

Thing is now, the rear doors wont open at all regardless to it been run or not. Thats it! I cant get into it.

[100ps_drw_hicube]

crow bar



have you checked all the wires running to the rear door might have a broken wire/ bad connection

[daddy cool]

crow bar



have you checked all the wires running to the rear door might have a broken wire/ bad connection

Think normally if one of the wires is broken, the doors won't lock at all.
Perhaps the remote is knackered or needs a new battery or programming again?

[Lee J]

how easy is it to re programme?

I'll try a battery

[daddy cool]

Easy.

IGN key from OFF to POSII (run) 8 times within 10 seconds ending with the battery light ON (posII)

The vehicle will signal learn mode by cycling the door locks in sequence

press a button on the fob

the vehicle will then confirm the learnt code by cycling the door locks for a second time

program another fob now in the same way if needed

Turn off the ignition to exit learn mode and the door locks will cycle to confirm.

[stevew]

Think normally if one of the wires is broken, the doors won't lock at all.

That's true of the MK5 but the mk6 has a seperate button for the rear as you've said. The circuit for it is isolated from the other doors so it's possible for it to fail independently.
I modified my MK5 to have a sperate circuit for the back as it's so much better and that has failed once.

Steve

[Nighthawk]

A few suspects

poor wiring condition between the O/S/R door and the corner pillar

poor door adjustment on the rear

latch failure within the O/S/R door

That fact that the interior lights are coming on when the blue button is pressed tells you that the remote fob and it's battery are OK, and that the CSM is seeing the signal to unlock.

Try unlocking the vehicle using the drivers side door lock barrel and key

turn the key to the lock position twice whithin 3 seconds, the vehicle should dead lock and flash the indicators.
now unlock the vehicle twice in the same manner as you locked it, if it still doesn't open the back door it's deffo fubar.

[Lee J]

thanks nighthawk, I dont have a keyhole on the drivers side, it's a blank plate. I had to break into it last night through the bulk head divider. I managed to get in and open the back door manually from the inside. I have been trying to source the fault. When I press the blue button there is no life at all in the lock. I thought I could disconnect it and just use the extra deadlock to lock the doors but the rest of the van wont lock with it disconnected.

I'll go to a scrapper and get another door lock motor/mechanism.

[phil g]

dynamite but remember quote micheal cain " your only supposed to blow the bloody doors off "

[AndyG]

A few suspects

poor wiring condition between the O/S/R door and the corner pillar

poor door adjustment on the rear

latch failure within the O/S/R door

That fact that the interior lights are coming on when the blue button is pressed tells you that the remote fob and it's battery are OK, and that the CSM is seeing the signal to unlock.

Try unlocking the vehicle using the drivers side door lock barrel and key

turn the key to the lock position twice whithin 3 seconds, the vehicle should dead lock and flash the indicators.
now unlock the vehicle twice in the same manner as you locked it, if it still doesn't open the back door it's deffo fubar.

Now that you've broken in you should be able to access the cabling between the rear pillar and door Jiggle it around while using the remote control to unlock.
I agree with Nighthawk the problem would most likely be here where the cable flexes as you open and close the door

[Gunslinger]

before you go buying new parts, disconnect the offending motor and fire it manually off a spare battery, if it works, and you have no power at the plug for it on the vehicle, then get your multimeter and earth one cable then keep spiking the cable working from the back in sections, pressing the remote at each new point, when you find a signal then you know you have gone past the break. (if its possible and i dont know the layout, before spiking the cable half a dozen times, go back to the first joint/connector and test there first)

i am leaning towards what these guys are thinking, the cable is damaged or a plug loose/shitty somewhere

[Lee J]

oh right, i'll give that a go tonight. First i'll check the cable and the plugs, squirt 'em with wd40.

ta