rb diagnostics help

[gibbon]

hi guys, my loom has had all its "unnecessary" plugs trimmed off of it... that includes the diagnostics pins that youre supposed to plug in order to get a code out of the check light. ive got the pinout so i know what pin is what, but i was hoping someone could help me through pulling some fault codes without the aid of the plug and check light.

 

so question time, i know that theres a diagnosis transmit and recieve wire, and an engine check light wire. if i bridge the TX and RX wires, and run the check light wire through a bulb to ground, will i have recreated the check light system?

 

thanks in advance

Edited July 12, 2010 by gibbon

[pat1]

There is a slot on the ecu where you put a screwdriver in to and turn clockwise and back with the key in engine off to pull codes. That's the way I did it until

I installed my NIStune.

[240Z_Master]

BTW... which "Check Light" are you talking about? The TX/RX/CK wires for the Nissan Consult plug all work with Nissan Diagnostic Tools or some sort of Nissan DataScan software

[240Z_Master]

I also went to the junkyard, and pulled the Nissan Consult plug from the car, and wired it up to my chassis harness on my RB25DET

[z-ya]

There should be a separate wire for the check engine light. It should connect to a low wattage bulb, then to ground. I'm using the choke light in my 71'. Works great. For the Nissan Consult connections do what others have suggested, get a plug fromt he junkyard and splice it into your harness.