SR4 ECU: 37820-P27-T00 vs T01

[levin818]

Hi freeman,
ECU built until '90 is very tough, still running well till today.
ECU from '91~'96 (or up to '00) was using new material that has shorter life spand (intentionally or unintentionally?). Periodically "technical check-up" is recomended to avoid the unwanted hassel.

E-tech,
Personally, i do not recomend to trick the ECU. ECU is categorize as life threathening item. Each and every process that relates with ECU need to be handle with extreme care. Tricking the ECU is just like removing the ABS or seatbelt from your car. It put one's life in danger! Each and every item that use in the car is engineered to its highest reliability level to safe guard human life. We should not simply alter it unless we know that the replacement item has meet the safety requirement. When it comes to repairing the ECU, one shall involve the knowledge of parts sourcing, manufacturing, QA, reliability, safety etc. It is not just replacing the cap.
So you know what to do with that ECU

 

[E-Tech]

Oklah.... Scrap da ecu and ask customer to
get another ecu...
Tq bro...
Btw do u know da part number of q15?
Body marked as L30... Last effort...
Previous changed part was taken from another
ecu.....tq.

 

[levin818]

Happy 2010! Sorry for late response.
Some of the parts that use in the ECU has its own marking (customization).
So it is impossible to retrieve its datasheet from the internet.
However, for your case to check whether its Q15 failure or not, you can jump its collector and emitter together --> the CEL41 should be disappear. Otherwise its the main chips failure.

P/S: base on the circuit's config, Q15 should be a digital transistor from Rohm.

 

[AD_EG]

wah both very experienced Sifu's. Glad to know we have such experts here..at least we feel safe hahaha

 

[E-Tech]

Levin...
Happy New Year to you all...2010.
It is a year of many spoilted ecu..
These 2 days, I hv done 4... 2/ day...

Btw I got the part number already.
Tonite will download the specs and by Tuesday I should be
able to source for the smt component..
Tq....

 

[Che Ahmad Majdi]

Hi all, sory for asking, P27-T00 it is jdm or usdm ecu ar? the patten look like usdm but jdm also have that patten, and it is 0bd0 or obd1?

 

[shah5755]

Bro...
on your pc....go to your temporary internet files....
you might just be lucky and find someone's picture there....

at explorer's window-->tools--> internet option-->browsing history-->setting-->view files, then
sort the file by type.... check the "jpg" files....

good luck.....

ur causing me to slipped away from my intention to gain knowledge bout honda's ecu

 

[EHNG]

Did you still keep 37820-P27-T01? I am looking the board,..

 

[levin818]

Yes still have it. Sorry that i miss out your post.
If you need it can PM me. It comes with an after market EPROM.

 

[E-Tech]

Yes still have it. Sorry that i miss out your post.
If you need it can PM me. It comes with an after market EPROM.

He finally contacted me... Same hometown :-)

 

[levin818]

Oh good. At least he find a right person :)