Injectors Don't Fire, After Removing Thatcham Immobiliser

[Ballyafb 6]

First ever post so excuse any mistakes...

 

Right, so I have been removing a Thatcham (Sigma M800 T2) immobiliser, and got to the point that engine cranks and sparks, but injectors don't fire. Fuel pump IS running. Couple of unknown wires left though, and some that should be there, but are not....

 

Picture time!! (Hope I uploaded them right)

• First picture: fuel pump relay, please note the thin black wire from pin 30, this is a Thatcham wire and so needs to be removed...However, I have found that this should usually go over to the fuel pump fuse to power the pump, but as I said, the pump is already getting power from another yellow/cream wire, picture to follow.

• Second picture: the immobiliser control box, was simply screwed under the steering column in a silver box.

• Third picture: immobiliser wires wrapped in black electrician tape (by Thatcham)

• Fourth picture: immobiliser wires wrapped in black electrician tape (by Thatcham)

• Fifth picture: the mutilation!!

• Sixth picture: THIS IS THE PICTURE I NEED HELP WITH PLEASE !!! Once I disconnect the black Thatcham wire from the cream Peugeot wire, it has no where else to be connected!! Please any help, what is this wire for/where roughly does it go. I have traced it over the steering column and through the bulkhead, it is live when cranking, but have no idea what it is for!!

• Seventh picture: the unknown cream Peugeot wire joining the loom. Please note, half the wires of this loom goes to the fuel pump relay (which is why I suspect the cream wire goes that way as well)

• Eighth picture: the unknown cream Peugeot wire over the steering column, before it goes through the bulkhead, under the heater pipes

• Ninth picture: black connector, as part of the fuel pump fuse, Please note, the wire either side of it changes colour, i.e. yellow in, cream out. Is this normal??

• Tenth picture: fuel pump fuse connector on fuse board. The yellow wire goes to the black connector (pictured above), the cream wire goes to the fuel pump. The red connectors with black wire in between are connected together. I assume Thatcham made a mistake when fitting.

 

Right, Hope this all helps, it is as detailed as I can make it, if I have left anything out, please let me know.

Any help, much appreciated!!

Thanks very much,

Alex

 

 

[Ballyafb 6]

SOLVED IT !!!

 

The unknown cream wire did have to go to pin 30 of the fuel pump relay...I obviously made a mistake when tracing the wires etc. GET IN !!!

[omega 82]

well done