2002 Nissan Stegea no spark

[Christ]

Hi

I’m a auto electrician in Toowoomba qld. I have a customer that had a mongoose immobiliser which a mechanic said it was faulty so i have cut it out but still no spark and engine light is sometimes on dull or not on at all.

Any help will be much appreciated 

Cheers Chris 

0419683245

[Duncan]

Sounds like the ECU is not getting power. There are a pair of relays next to the ECU, one turns the ECU on, the other is for the ignition. Make sure they have battery power to them and then check 12v at the ECU power inputs (and check earth there too). Mongoose is unlikely cutting ECU inputs so original problem may have been a misdiagnosis