Riddle

New Member
Further problems with the rebuild of my 1988ninety fitted with a 200TDI

I have fitted a bulkhead and seatbox from a TD5 with the dash and wiring loom still attached. In my simple mind I think I can run a wire from the battery to the fuse box under the drivers seat then ignoring the wires that would have been from the ecu use the wire to the ignition and also the live that feeds the fuse box. I obviously do not have an ECU.

This results in the ignition switch working and the wipers etc working when the ignition is in position 2 so all is good. The problem is starting the engine, when the ignition is held against the spring (crank position) I have a live feed to the white and red wire at the starter relay which is what I need. There is also a permanent live feed to one of the terminals on the starter relay and also a black and orange wire to another terminal, I believe this is the alarm??.
The problem is there is no live (brown and red wire) coming out of the relay.If I connect the small black and orange wire across the relay to the white and red terminal then when I crank the ignition I have a live coming out but the relay makes a strange noise which makes me think I have got something wrong

I have read many many threads without finding the info so any help would be appreciated.
 
it would have been better and lot easier to just put the original loom in and less unused wires nocking about
 
Further problems with the rebuild of my 1988ninety fitted with a 200TDI

I have fitted a bulkhead and seatbox from a TD5 with the dash and wiring loom still attached. In my simple mind I think I can run a wire from the battery to the fuse box under the drivers seat then ignoring the wires that would have been from the ecu use the wire to the ignition and also the live that feeds the fuse box. I obviously do not have an ECU.

This results in the ignition switch working and the wipers etc working when the ignition is in position 2 so all is good. The problem is starting the engine, when the ignition is held against the spring (crank position) I have a live feed to the white and red wire at the starter relay which is what I need. There is also a permanent live feed to one of the terminals on the starter relay and also a black and orange wire to another terminal, I believe this is the alarm??.
The problem is there is no live (brown and red wire) coming out of the relay.If I connect the small black and orange wire across the relay to the white and red terminal then when I crank the ignition I have a live coming out but the relay makes a strange noise which makes me think I have got something wrong

I have read many many threads without finding the info so any help would be appreciated.


Do you enjoy making life difficult for yourself?? :D
 
this sounds like a right headache, and is going to take many hours to make a wiring loom for a TD5 work with a 200tdi, you woulda been better off swapping the looms.

I guess it multimeter time!
 
I would presume that what the relay wants is the crank-enable signal from the 10AS alarm/immobiliser module that sits behind the dash on Td5 Defenders.

Have you tried earthing that black/orange wire and seeing if that enables the relay to function?

You will also need to sort out wiring for the temperature gauge, interior lights and glow-plugs as these things are all either controlled by the engine or alarm ECUs. None of it is hard, you can just revert to the system used by the Tdi wiring in each case.

I wouldn't be too concerned about it, and the Td5 loom is far far superior to anything prior to it in design and layout so it will be worth the work :)

You probably want the RAVE CD information, as that has not only wiring diagrams but also a very useful electrical library with detailed descriptions of systems operation and connector pinouts etc.
 
I'm not sure if it's a data signal as such (depending on what you mean by data signal), the 10AS just provides a ground path on that wire to enable the starter relay to function. It only does this once the immobiliser has communicated with the engine ECU and given the all clear.

Of course this is of no use in a 200Tdi, so hopefully just providing this ground permanently will get around it. Otherwise, replacing the starter relay with one from a 200Tdi would be another option.
 

Similar threads