badass8

I have a 1992 Lexus ls400 1uzfe in my Nissan 240sx (s13) and I am having a bog issue whenever I touch the throttle so I want to see what codes the CEL is throwing. But I can't find the CEL wire from the 1uz ECU.

I have done research to find it but still a little confused.

The CEL Wire (W) is Pin #3 on the 16 pin plug.


According to this diagram the CEL (W) wire is #5 colored Yellow and Red.
http://www.lextreme.com/lexecc1.pdf

Here is how my 16 pin plug wires are colored....I do not see a wire that is Yellow and Red.




I am no wiring expert but I believe I have went through the proper ways to research a job like this. Any help is greatly appreciated.

badass8

I see that the 26 pin plug has a yellow and red wire but I am unsure that, that wire is the CEL wire.

oldskewel

iTrader: (1)

You may be trying to do something way more complicated than I've done with OBD on my '91, but just in case ... here's how I check codes on mine: You just use a paperclip to jumper two connectors together, either in the OBD port under the driver's dash or in the Diagnostics port in the engine bay. Then turn the car on and observe (count) the flashes of the CEL, etc.

If you're already familiar with all that, you're well beyond me on this.

EDIT - oh now I see, you've got a transplanted engine, so nevermind. And yes, that is badass, badass8

badass8

Haha yes, pulling the codes is pretty simple. Just wiring the actual light I am having trouble with.

Thank you anyways!

timmy0tool

iTrader: (7)

where is this 16pin connector connected to?
keep in mind the motors did change between years, where 95-97 changed drastically (became interference).
even some 90-92 differed from 93, so make sure you have the proper wiring diagram for the motor.

i assume you are running the stock ECU. they tend to have problems even on stock cars.
https://www.clublexus.com/forums/ls-...capacitor.html

badass8

I knew I was reading something wrong... On that pin out I posted about the 16 plug I didn't read the top of that page and it clearly says "Plug 16 on 96 motor."

This is my first small write up so here we go:

Solution to wiring the CEL (Check Engine Light) for a 1992 ls400 1uzfe into a s13:

1uzfe CEL Wire Location:
-First the 1uzfe CEL wire is a ground
-Refer to wiring diagram: http://www.lextreme.com/lexecc1.pdf
-CEL wire (YELLOW/RED) located on the 1uz ECU 26plug is #5 labeled "W"

I have a lot of wires missing on the 26 plug due to the swap and how it was wired. But here is my 26 plug you can see the YELLOW/RED CEL wire.


1991 s13 DOHC CEL Location:
-This time the S13 CEL wire is power so it works perfect with the 1uzfe CEL wire.
-Refer to wiring guide: http://www.ma240sx.net/forums/showthread.php?tid=10070
-CEL wire (RED) #4 located on F1 plug its the brown plug that normally connects to the ka24de engine harness.

Here is my F1 plug, you can clearly see the RED CEL wire. I then cut the red wire away from the F1 plug to get it ready to be soldered together with the 1uz CEL wire.


To make it simple:
Yellow/Red (1uzfe wire) spliced into Red (s13 wire)