Help! check engine light alwasy come up in cold

[2JZDU]

Originally Posted by pwpanas

"Diagnosis tool"??? What on earth are you talking about?

All you need is a paper clip to "Connect terminal between TE1 and E1 of data link connector 1 or 2". Didn't you read the link I posted???
http://www.mkiv.com/techarticles/eng...bd1_codes.html
That tech article does NOT mention a "diagnosis tool", in any way, shape or form.


If you don't mind me saying so, if you'd have fixed this yourself instead of taking it to a mechanic, you would have learned "relation between cam sensor and cold weather".

yes I read that, but I just don't understand where can I found the codes after I connect those connector, cause I throught I will need a computer thing to plug in the connector, then code will be shown on the screen.

[pwpanas]

Originally Posted by 2JZDU

yes I read that, but I just don't understand where can I found the codes after I connect those connector, cause I throught I will need a computer thing to plug in the connector, then code will be shown on the screen.

With a paper clip in the connector, how could you plug anything else into it?

If you read the tech article, and maybe didn't understand part of it, why didn't you ask?

Your "check engine light" is really called a "malfunction indicator lamp" by Toyota. This from the very first paragraphs of the tech article:

"The ECM contains a built-in self-diagnosis system by which troubles with the engine signal network are detected and a malfunction indicator lamp on the instrument panel lights up...
The diagnostic trouble code can be read by the number of blinks of the malfunction indicator lamp when TE1 and E1 terminals on the data link connector 1 or 2 are connected."

Again, this tech article does NOT mention a "diagnosis tool", in any way, shape or form.

[2JZDU]

Originally Posted by pwpanas

With a paper clip in the connector, how could you plug anything else into it?

If you read the tech article, and maybe didn't understand part of it, why didn't you ask?

Your "check engine light" is really called a "malfunction indicator lamp" by Toyota. This from the very first paragraphs of the tech article:

"The ECM contains a built-in self-diagnosis system by which troubles with the engine signal network are detected and a malfunction indicator lamp on the instrument panel lights up...
The diagnostic trouble code can be read by the number of blinks of the malfunction indicator lamp when TE1 and E1 terminals on the data link connector 1 or 2 are connected."

right, so that mean I just need to count how many time it flash then I can find the problem throug that table?

and what if the car has some another problems, after I read one do I need to re-connect again for next code?

thank you, learn a big thing today

[pwpanas]

Originally Posted by 2JZDU

right, so that mean I just need to count how many time it flash then I can find the problem throug that table?...

Yes. Again, please read, and re-read, and re-read that tech article until you fully understand it.

Originally Posted by 2JZDU

...and what if the car has some another problems, after I read one do I need to re-connect again for next code?...

No. Please read the tech article. The codes follow one another in a pattern of flashes. The tech article COMPLETELY explains ALL of this!!!

Originally Posted by 2JZDU

...thank you, learn a big thing today

You're welcome. I only wish you would have asked more questions before you assumed that you needed some sort of fancy "diagnosis tool", and sent your car away to someone that may or may not have fixed the problem, and may or may not have charged you for parts that you did not need.

[2JZDU]

Originally Posted by pwpanas

Yes. Again, please read, and re-read, and re-read that tech article until you fully understand it.

No. Please read the tech article. The codes follow one another in a pattern of flashes. The tech article COMPLETELY explains ALL of this!!!

You're welcome. I only wish you would have asked more questions before you assumed that you needed some sort of fancy "diagnosis tool", and sent your car away to someone that may or may not have fixed the problem, and may or may not have charged you for parts that you did not need.

hey bro, I need your help again.
today the check engine light appeared again, then I diagnosised it myself.
here is the result I have got:

engine light flash once, after 1 sec, it keep flashed 4 time, then repeat form the beginning.

the over/drive light flashed twice first, then flashed 4 times, and repeat.

I just to find to the code from the table, but I dont quite understand the table, please help me, many thanks


hey bro, I need your help again.
today the check engine light appeared again, then I diagnosised it myself.
here is the result I have got:

engine light flash once, after 1 sec, it keep flashed 4 time, then repeat form the beginning.

the over/drive light flashed twice first, then flashed 4 times, and repeat.

I just to find to the code from the table, but I dont quite understand the table, please help me, many thanks

[pwpanas]

Originally Posted by 2JZDU

hey bro, I need your help again.
today the check engine light appeared again, then I diagnosised it myself.
here is the result I have got:

engine light flash once, after 1 sec, it keep flashed 4 time, then repeat form the beginning.

the over/drive light flashed twice first, then flashed 4 times, and repeat.

I just to find to the code from the table, but I dont quite understand the table, please help me, many thanks


hey bro, I need your help again.
today the check engine light appeared again, then I diagnosised it myself.
here is the result I have got:

engine light flash once, after 1 sec, it keep flashed 4 time, then repeat form the beginning.

the over/drive light flashed twice first, then flashed 4 times, and repeat.

I just to find to the code from the table, but I dont quite understand the table, please help me, many thanks

The engine light flashes seem like code 14, from your description.

The OD light flashing seems like code 24, from your description.

[2JZDU]

Originally Posted by pwpanas

The engine light flashes seem like code 14, from your description.

The OD light flashing seems like code 24, from your description.

so now the problem is either igniter and ECM, any suggesttion how should I check it myself? any experiences?

[pwpanas]

Originally Posted by 2JZDU

so now the problem is either igniter and ECM, any suggesttion how should I check it myself? any experiences?

The easiest way to check for an ignitor problem is to swap it with a known-good ignitor from another Mkiv Supra TT.

Other than that, the TSRM details all of the troubleshooting steps you need to accurately diagnose any problem (this one included).

[2JZDU]

Originally Posted by pwpanas

The easiest way to check for an ignitor problem is to swap it with a known-good ignitor from another Mkiv Supra TT.

Other than that, the TSRM details all of the troubleshooting steps you need to accurately diagnose any problem (this one included).

hi mate, I need your help again. Today I found my check engine will on if I drive over 140Km/h, but if I shut it down and restart the engine, the light will go away, I think might be a false o2 sensor. Anyway I try to diagnostic what the problem really was, but the weird thing happen.

engine light flash once, after one second, it keeps flash 4 times quickly, after one second, it flash two times more quickly as well, then go back to beginning.

I looked up the table and I couldn't find any condition of 2,


do you have any ideas what that was? I am very appreciated.

[pwpanas]

Originally Posted by 2JZDU

hi mate, I need your help again. Today I found my check engine will on if I drive over 140Km/h, but if I shut it down and restart the engine, the light will go away, I think might be a false o2 sensor. Anyway I try to diagnostic what the problem really was, but the weird thing happen.

engine light flash once, after one second, it keeps flash 4 times quickly, after one second, it flash two times more quickly as well, then go back to beginning.

I looked up the table and I couldn't find any condition of 2,


do you have any ideas what that was? I am very appreciated.

One of the two codes appears to be 14, right?. Let's start with that:

14

Ignition Signal

No IGF signal to ECM for 4~7 consecutive IGT signals with engine speed less than 3,000 rpm.

• Open or short in IGF circuit from igniter to ECM
• Igniter
• ECM

ONn/a

Yes

It seems you may have a problem with your igniter. Did you ever get a TSRM for your Supra?

Also, please re-check those codes. I don't think it's possible for the ecm to give a single-digit code. Perhaps it's 22?