Nats

[Dutch Darren]

Hi,
Think I have a nats problem.
Here goes..
Car ran fine, but very very quickly the EML came on and off.
Got home all ok.
Turned the engine off,
Now the EML light flashes quickly.
Counted 141, 142 and 145.
Got fuel to the rail, sparks good, fuel pump works, but injector's not opening.
So poured a bit of petrol down the TB and it fired for a few seconds.
What's happened?
It's got the key with the red chip.
All wiring seems ok.
The ECU won't reset, same codes keep appearing.
Has the key chip lost its mind and won't talk to the Ariel ring around the ignition barrel?
It's a Dutch 97 1.3 with a Bosch ecu

 

[frank]

usually an Ariel problem i think

 

[Dutch Darren]

usually an Ariel problem i think

Ok, how can I get around this? Took all the shrouds off, took the red chip out and held it everywhere, no luck.

 

[frank]

probably a broken wire or internal circuit problem
best to get an ecu kit, or prenats ecu and some pinout changes

 

[Dutch Darren]

So if I go for the ECU kit, means a dashboard out job to get at that little black box in the passengers a pillar??
Pain in the arse nats

 

[frank]

heater out job iirc darren, and yes

 

[Dutch Darren]

What is it with me and dashboards??
Just done a 97 escort heater matrix, 96 Punto matrix for friends....omg ?

 

[-WJ-]

Hi, you can fit an earlier non-nats ecu, swap around a few wires and you're done. Most of the people in this forum refer to Ed from fusion motorsports for a solution, but Ed his info is no longer online, his micra links on his website are dead and he doesn't respond to emails. I've spent some time trying to fix this exact same issue, and have fixed it 100%.

This fix is for the micra with the key with the red chip in it, and the non-coilpack engine with the single distributor.

Get an early ecu (the oblong one, not a square one) that fits your engine (either cg10 or cg13).

On the engine loom (so on the plug to the ecu) switch over these wires:
switch pin 106 to pin 104
switch pin 12 to pin 36
switch pin 31 to pin 22
switch pin 40 to pin 30

After this your car will not have an immobiliser anymore but you can still use your old keys.

you can send some thanks to https://www.paypal.com/paypalme/willemjacobdijkstra => I've spent considerable time on this, but would like to share the knowledge (unlike some!)

P.S.
If you have an australian car, you can just plug in a non-immobilised ecu and it will just work!