From much searching and tips from this forum I have now fixed my central locking! Very happy now! I bought my van with the fault on so saved myself money.
Faults,
Absolutely nothing happening when the key fob was pressed even after changing the battery
Drivers door red LED not flashing and had to lock each door individually.
Only getting 5 volts from the power feed cable to the central locking module (under drivers seat)
The fault is a corroded / broken power cable (red & blue) to the central locking module under the floor matt on the drivers side due to damp build up around the join.
Process of repair,
Make sure you disconnect the earth from the battery, chock the wheels and leave vehicle in gear as you will have to disconnect the hand brake.
I have removed the passenger seats for better access and to clean all the damp from under the floor matt but can be done with passenger seats fitted.
First remove the drivers seat via the 2x 13mm nuts and 2x multi spline bolts not forgetting to disconnect the seat pressure switch underneath.
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Slide off the handbrake cover off via levering the clip out from underneath and sliding forwards.
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Then remove the lower section of the handbrake cover.
![Image]()
You will now see the handbrake mechanism and adjustment nut.
![Image]()
Measure the distance from the top of the nut to the top of the threads, must be the same when re fitting, mine was 11mm, if you don't have a ruler you can use a spanner that is the same distance as a guide. Remove nut and slide out handbrake cable.
![Image]()
Disconnect the handbrake sensor switch.
![Image]()
Remove central locking module from the seat base and the 4x 16mm nuts holding it in place.
![Image]()
![Image]()
Lift up the floor matt and remove the central locking module.
![Image]()
Un wind or carefully snip the fabric cover back aprox 12 inches.
![Image]()
Part way down you will come across the power cable with a black cover round it, mine just fell apart and was covered in green corrosion powder but worth taking this off too, to check.
![Image]()
![Image]()
I stripped back the wires to get bare good wire, used a bullet connector to repair the split, plugged in the module and battery earth back on to test and boom! Central locking works?! The other cable was 3 inches long and didn't go to anything so I just removed it.
I very tightly used electrical tape to re insulate and waterproof the bare wires and re assemble.
Remember to clean under the floor matt and adjust the handbrake back to the same position..
Hope this helps, any problems or if I've missed something PM me.
John boy.
A:
Faults,
Absolutely nothing happening when the key fob was pressed even after changing the battery
Drivers door red LED not flashing and had to lock each door individually.
Only getting 5 volts from the power feed cable to the central locking module (under drivers seat)
The fault is a corroded / broken power cable (red & blue) to the central locking module under the floor matt on the drivers side due to damp build up around the join.
Process of repair,
Make sure you disconnect the earth from the battery, chock the wheels and leave vehicle in gear as you will have to disconnect the hand brake.
I have removed the passenger seats for better access and to clean all the damp from under the floor matt but can be done with passenger seats fitted.
First remove the drivers seat via the 2x 13mm nuts and 2x multi spline bolts not forgetting to disconnect the seat pressure switch underneath.
Slide off the handbrake cover off via levering the clip out from underneath and sliding forwards.
Then remove the lower section of the handbrake cover.
You will now see the handbrake mechanism and adjustment nut.
Measure the distance from the top of the nut to the top of the threads, must be the same when re fitting, mine was 11mm, if you don't have a ruler you can use a spanner that is the same distance as a guide. Remove nut and slide out handbrake cable.
Disconnect the handbrake sensor switch.
Remove central locking module from the seat base and the 4x 16mm nuts holding it in place.
Lift up the floor matt and remove the central locking module.
Un wind or carefully snip the fabric cover back aprox 12 inches.
Part way down you will come across the power cable with a black cover round it, mine just fell apart and was covered in green corrosion powder but worth taking this off too, to check.
I stripped back the wires to get bare good wire, used a bullet connector to repair the split, plugged in the module and battery earth back on to test and boom! Central locking works?! The other cable was 3 inches long and didn't go to anything so I just removed it.
I very tightly used electrical tape to re insulate and waterproof the bare wires and re assemble.
Remember to clean under the floor matt and adjust the handbrake back to the same position..
Hope this helps, any problems or if I've missed something PM me.
John boy.
A:
