Help! check engine light alwasy come up in cold

[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?

[2JZDU]

Originally Posted by pwpanas

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?

hi mate, but if it's code 22, should the time gap of those flash a bit longer? I did upload to youtube, would you mindhave a quick look for me?

http://www.youtube.com/watch?v=k7V4UdBdpZw

many thanks

[pwpanas]

Originally Posted by 2JZDU

hi mate, but if it's code 22, should the time gap of those flash a bit longer? I did upload to youtube, would you mindhave a quick look for me?

http://www.youtube.com/watch?v=k7V4UdBdpZw

many thanks

To me, it looks like codes 14, 21, and 42. Can you continue the video longer? There is a HUGE pause when the cycle of codes ends...