ZX diesel Immoboliser Problem

[Bedford]

We have a 1997 ZX 1.9 diesel with a Bosch pump. It has a keypad, which we would like to bypass. The fuel cut-off and heater plugs are both working when the ignition is switched on. There are four wires coming out of the pump. Which wires to I need to connect direct to override the keypad?

[citronut]

you cant as the imobaluser is inside the armour on the back of the pump,

you will have to remove the armour then the imobaliser, then find the switched live feed in the square black plug block at the bracket on the end of the pump and run a link to the shut off valve,

the armour is fun as it has several shear bolts ( anti tamper ) which some have there heads sunk below the surface of the armouring,

the ones you can get to just drift them undone with a center punch, the others cut the armour away some with a cutting disc on an angel grinder ( that is the ones you can get this into/at ) the others with a dremil type tool with a cutting disc fitted,

also make sure you dont get swarf into any open port/point of the pump as the injector pipe will require removing at the start of the operation,

[spider]

As above, you cannot just power one wire to switch the solenoid.

In theory if its unlocked it will work like that but its likely to lock itself. I base this on the fact when you send them for internal repair they have to go "unlocked" , assuming its not going for module work that is.

You need to either remove / de-armour the pump (it can be butchered in situ in a fashion, at least in theory) but its likely to damage it in most cases, not worth the risk as you cannot get all the cover off where it is anyway... I have seen one "cut open" in situ but it looked a right mess. I may still have the pic.

Or just get a green light on your keypad then unplug it. As long as they keypad is not plugged in again it should not re-arm itself as the texton / pump module will not receive any "lock" signal.

[citronut]

i de/armoured my XANT pump in situe in the way described above it was tricky/fiddly but not messy,

i did mine as it repeatedly failed and cutout on motorways

the only thing i heard regarding disconecting the key pad with the green light up, wasyou need to make a note of the code just in case the battery needs to be disconnected at any time,

regards malcolm

[spider]

i de/armoured my XANT pump in situe in the way described above it was tricky/fiddly but not messy,

The one I saw, they erm not sure how to describe it (I do have a pic somewhere) looked like they angle ground into it and just cut some of the "top" off to get at the solenoid, but left raggedly sharp edges.

Good point about battery too, although I hear conflicting reports about it retaining it or not with battery disconnection, probably best to just set it back to default of 1111, then once its happy (and that does work) unplug.

[citronut]

i only had to cut i think two points of the armour away tio get at to really deep hidden shear bolt heads, the fully removed the armour before un/bolting the imobaliser to get at the solanoid,

i cant see it make any difference what code it is set up with when disconnecting the key pad, as thats what you would need to use if you had to re/enter it,

although 1111 would be easier to remember

[spider]

i cant see it make any difference what code it is set up with when disconnecting the key pad, as thats what you would need to use if you had to re/enter it,

although 1111 would be easier to remember

That was my reasoning, simply as if we had a car and did not know the code, that would be the first thing I'd try...

[spider]

... looked like they angle ground into it and just cut some of the "top" off to get at the solenoid, but left raggedly sharp edges.

And here is the pic, I knew I had it somewhere

Its a DW8, usual Lucas pump:





Not mine, I had the pic for a while not 100% sure where it came from.