Wednesday, July 28, 2010 - 03:05 pm, by: Vincent Fontenot(Vj400)
Ok, dealing with a JZX90 Chaser 1jz motor set into a Nissan 240SX.
The chassis in this case is irrelevant.
After having everything wired in I am facing a problem of getting no spark or fuel. The igniter is receiving power which is also powering the coils.
From what I've been able to read the injectors are supposed to also be powered by the same wire. I have no power at the injectors.
Everything I've read suggests that the cam and or crank sensors may be bad, but I can't find one legitimate way of testing them, outside of replacing them with new units.
I've searched for months for any sort of understandable diagram and obviously haven't found anything.
What I'm more or less trying to find at this point, is how I can test the sensors and what function each pin in the harness connecting to those two sensors serve.
For instance I've determined the brown wire on the cam shaft sensor is for sure, a ground. However I'm trying to determine if the other wire which, if iirc is white, is a 5v reference, 12v constant or otherwise. Same situation with the crank position sensor and injectors.