Technical 899 immobiliser wiring halp

[niamh]

Hiya

I have an engine swapped reliant with an 899 engine from a Seicento in it. I'm trying to fix a bunch of issues with it and found the immo was wired up wrong. I have fruitlessly searched for hours for a wiring diagram and only have the non immo ecu wiring. Autodata was useless.

Does anyone happen to have the pinout for the immobiliser module?

Thankies

 

[Prawny12009]

Do you have the original key and immobiliser code box to match the ecu?

the immobilizer can be turned off in the ecu then the immobiliser box and relevent wiring can be discarded, if you reconnect the code box the ecu will attempt to pair with it re arming the immobilizer.

it requires the ecu to be opened and some wires connected directly to the 68hc11 chip so that the immobilizer bytes can be turned off.



these colours are from an 899 citymatic that i stripped the engine loom from so may be different to what you have (citymatic shares engine loom design with sporting models so has a single large white power relay instead of the two separate relays found on the manual models)

White= permanent live (changes to red/green to code box pin 3 and red to main power relay)
red/black = switched live (changes to orange/white to code box pin 8 and orange to ecu pin 26)
Black= code box pin 4 to earth (& code box black diagnostic plug pin 2)
grey= code box pin 6 to ecu pin 7 (immobilizer data wire)
green= code box pin 5 to code box black diagnostic plug pin 3
white/yellow= code box pin 2 to immobilizer warning light

Pins 1 and 3 on the smaller white 3 pin plug are for the key antenna ring

 

[Prawny12009]

IAW 16F ECU wiring help please | FIAT Cinquecento / Seicento

Im currently building a race car using a Cinquecento. It has the 899cc engine using the IAW 16F ECU. So iv cut everything i dont need off the loom, leaving everything coming off the ECU,and iv got the key code box with them wires, so i put what i have left in place plugged all the sensors back...

www.fiatforum.com

this topic might help

 

[antonis132]

No just open ecu read 68hc11 chip and send it to my email, [email protected]
Immobilizer will turn off and start the engine