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Check Engine Code Connectors


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8 replies to this topic

#1 TJeep_1999

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Posted 08 February 2006 - 12:36 PM

I just picked up a '92 Loyale wagon.

I'm sure it has to be out on the forum somewhere, but I'm having touble finding the specific details... probably my own doing :banghead:

Anyway, I have a 2wd, 5spd, 1992 Loyale and I want to find out why my check engine light is on. Where can I find the "test" wires/connectors? I've seen where some people said they are in the engine bay and others state that they are behind the steering column. What do they look like? What color are they? Green? White? Black? Any specifics to help me find these things would be greatly appreciated :)

Any help is welcomed... thanks again!

#2 Holmes

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Posted 08 February 2006 - 01:18 PM

Here you go -

http://www.ultimates...s/ecucodes.html

I believe your connectors are right by the fuel filter, behind
the drivers side strut tower.

#3 azsubaru

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Posted 08 February 2006 - 02:04 PM

Holmes is right about the location, and there is (probably) a white set and a green set there, should be easy to find.

#4 TJeep_1999

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Posted 08 February 2006 - 09:18 PM

You were both right. The connectors are green and white and they are located right by the fuel filter, behind the drivers side strut tower. This saved me a lot of time tonight that I might have spent wondering if I had the right wires. Thank you.

When I turned the key to the on position, with both connectors disconnected, the check engine light just stays on solid.

Here is what I'm seeing:
Wires Connected: None
Key in "ON" Posistion: Solid Check Engine Light
When I Start the Engine: Solid Check Engine Light

Wires Connected: Green Only
Key in "ON" Posistion: Solid Check Engine Light
When I Start the Engine: Light goes out

Wires Connected: White Only
Key in "ON" Posistion: Solid Check Engine Light
When I Start the Engine: Solid Check Engine Light

Wires Connected: Both
Key in "ON" Posistion: Solid Check Engine Light
When I Start the Engine: Light goes out

I was expecting the light to flash with at least one of these combinations, but I'm not seeing that.

In all cases where the check engine light turns off, when I start the car, it comes right back on again after the engine runs for awhile.

Any ideas? Could I be doing something wrong or is it possible something is wrong with the ECU :confused:

Thank you again for your time and help!

#5 Peter Grimes

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Posted 08 February 2006 - 09:50 PM


When I turned the key to the on position, with both connectors disconnected, the check engine light just stays on solid. I get the same results with only the green connected or only the white connected. I was expecting the light to flash with at least one of these combinations, but I'm not seeing that.

When I connect both of them together the check engine light turns off when I start the car. It comes back on again after the engine runs for awhile.

Any ideas? Could I be doing something wrong or is it possible something is wrong with the ECU?

Thank you again for your time and help!


I'm no expert, but I've got a '93 Loyale wagon, and my light's on as well. But when you do the test, the CEL (check engine light) isn't the one that will flash. The light that will flash to give you the code is actually the LED on the top of a computer box thingy underneath the steering column. It's a real pain in the neck (and lower back) to get at:

Remove the knee panel beneath the steering wheel that keeps all the wires up underneath the dash. Lay on your back or your side, and look for a tan (on my car) colored metal box about the size of dvd case, only thicker. This unit is directly engine-ward from the spot where the steering column meets the dash, and you can only see it when your head is in the footwell. There is a 'slot' or 'opening' in the side closest to the underside of the steering wheel, and the LED is inside there. So, once the test leads are connected, and the key is in the ignition in the proper position (run?) you will see the LED blink a pattern.

Mine came back as "EGR Solenoid Valve".... but I still haven't gotten around to actually finding the EGR valve :)

#6 Holmes

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Posted 09 February 2006 - 10:57 AM

I'm not sure why anyone has to remove anything to read the LED.
There should be a small space under the steering column where it is
perfectly visible. Although I don't have a Loyale, maybe they're a little
different. In the two GL's I've owned there is a strip of foam in the
space where the steering column and kick plate meet. Push down on
the foam and you'll see the light blinking right behind it.

#7 hooziewhatsit

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Posted 09 February 2006 - 03:02 PM

hehe, I did the same thing when I first checked the codes on my car.

'why the heck isn't the CEL blinking :confused: :rolleyes: :cool: '

like holmes says, once you know where the light is, you should be able to read it without removing anything.

#8 mikeshoup

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Posted 09 February 2006 - 09:13 PM

I think a lot of people do that. I did that in my XT6, turned the key on, ran to the trunk, connected the wires, went back to the seat, and thought "Why isn't my CEL light blinking or something?"

#9 TJeep_1999

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Posted 09 February 2006 - 09:20 PM

Well it looks like I've got a "34" (EGR Solenoid or Circuit) and a "35" (Purge Control Solenoid or Circuit).

I ended up having to remove the knee panel beneath the steering wheel to see the LED, but it lines up in such a way were I can see why that might not be required on some models.

I never would have figured this out with out every one's help. This is a great site:banana:

Thanks Again!




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