Engine light and the paper clip

[photogod]

I had an engine light in the 94 and used the 91 manual to try and get the codes but the plug for the 91 is different than the 94 so if anyone has a 94 manual would you please tell me which spots to put the clip to get the codes to show. Thanks in advance. 94 manual is on the way.

 

[whodat]

IIRC the paperclip trick cannot be used on 93 or 94 on up...those would be ODBII. Autozone will read it for free or Harbor freight has a reader for 39.99.

 

[Arya Ebrahimi]

The pins you need to connect are "E1" and "TE1". There is a diagram on the inside of the cover for the plug.

'95 was when they switched to OBDII

 

[photogod]

The pins you need to connect are "E1" and "TE1". There is a diagram on the inside of the cover for the plug.

'95 was when they switched to OBDII

Thanks Arya. Never thought to look on the cover

 

[Arya Ebrahimi]

The cover doesn't tell you which pins to use. It simply labels all of the pins, making it possible to tell you which pins w/o giving a physical description

 

[photogod]

Roger, The pins are the same but the port is different for the 91 and 94. Thanks

 

[speyrod]

for $40 is the reader any good?

 

[brianinaustin]

for $40 is the reader any good?

Yeah, it works well. Hook it up to a running truck and it displays the codes a few times, then clears them. It comes with a book to look up code definitions.

If I had a dollar for every time I've used mine, I'd have about five bucks, but it's a heck of a lot easier than driving to an auto parts store.

I think the model is Creader by Launch (or vice-versa) if you want to look it up.

 

[roncruiser]

On my 94, the CEL just came on. Where exactly is the datalink connector (plug) located? I'd like to check the codes during lunch.

 

[Arya Ebrahimi]

On my 94, the CEL just came on. Where exactly is the datalink connector (plug) located? I'd like to check the codes during lunch.

It's on the passenger side under the hood on the firewall. Located near a canister of some sort(evap maybe?). It's a small black plug, and can be somewhat difficult to see at first glance, but is not hard to find if you keep looking. It's down a bit from the top edge of the firewall.

Ary

 

[C6H12O6]

The pins you need to connect are "E1" and "TE1". There is a diagram on the inside of the cover for the plug.

'95 was when they switched to OBDII

You might check into this more... Other posts here have stated it is the "TE1" and the "T1" (not E1) that you need to jump. You don't want to short out the wrong wires in there .

I have a '95, and yes it was '95 that they switched. No T1 on the '95 and later. You have to use a code reader on the OBDII port above the fuse block in the dash.

Steve

 

[Driley]

Te1 & T1

I have a 94 and it is TE1 & T1. Then just pull the 15 amp EFI fuse (blade style) at fuse panel on driver's side engine compartment for about a minute to clear the code from CEL.

Also search sr.gringo posts, he is the one that clued me in.



edit: I started searching and found this http://www.troublecodes.net/Toyota/ & this http://www.off-road.com/toyota/tech/codes/ I was sure it was the TE1 & T1 but I must be wrong. Sorry for the error. I may have messed something up myself when I checked it a couple of months ago!

 

[cruiserman]

TE1 and E1

 

[CJF]

Well guys, which is it??

To be specific, we're talking '93-94, right?

Curtis

 

[roncruiser]

94 to be more specific... at least in my case.

 

[Arya Ebrahimi]

The pins are TE1 and E1 and the connector is located beneath the wiper motor(I went and looked).

Oh, and tweezers from a swiss army knife make a great jumper.

Ary

 

[photogod]

93 and 94 are the same for normal diagnostics and use TE1 and E1 terminals. For further tests you can use the TE2 and E1 terminals and it will give you additional malfunction codes for the starter ciginal circut, air conditioning siginal and park/neutral position switch. That's the deal.

 

[tech_dog]

I've always been suspicious that there's more than one type of 94 out there. I have a 94 that was actually BUILT in December of 94, which seems very unusual. I had an ex-gf that worked as a Toyota service writer, and her tech told me that it has a 95 wiring harness.

I've thought it possible that they had a production problem with the 95s, since that was the first year with airbags and a few other goodies, and they decided to move a few out configured as 94s.

T.

 

[Rogorn]

Autozone will read it for free

My local Autozone said they did not have the correct connector to be able to read the code(s) from my early '93. <sigh>

However, I'm not sure they would have been able to help anyway, as the check engine light never stays lit after the engine is turned off and restarted. It only appears infrequently while running. And then mostly during slowing down for lights, stop signs, etc. Never appears while running on the interstate.

Is there a "check engine light" condition which can be triggered by a vacuum leak?

 

[CJF]

My local Autozone said they did not have the correct connector to be able to read the code(s) from my early '93. <sigh>

You do realize that we're saying you can read codes with an honest to goodness paperclip, right? We're not using it as a code word for some fancy electrical connector. In fact, the paperclip in my ashtray is actually a multi-tool: code-reader and windshield-washer-nozzle-unclogger all in one. ;p

However, I'm not sure they would have been able to help anyway, as the check engine light never stays lit after the engine is turned off and restarted. It only appears infrequently while running. And then mostly during slowing down for lights, stop signs, etc. Never appears while running on the interstate.

I think you should still be able to read them the first time the vehicle's shut off.

Is there a "check engine light" condition which can be triggered by a vacuum leak?

Pretty sure there was a similar thread in the last day or two with a link to code translations.

I'm guessing you don't have any manuals?? Factory manual is of course best, but at the very least drive back over to Vatozone and pick up a Hayne's. It explains all this stuff.

Good luck,

Curtis