its stuck in backup mode
is the CEL dead key on too, ? flashing 12s missing is clearly bad ECU but only if the lamp is good, and" key ON" CEL glows. ??
Does the key on CEL glow.>????
as my page says, ECU. not all ECU are repairable.
1: some acid damage can not be corrected. (for 2 reasons, damage to copper too extensive or it destroys parts not sold now.)
2: there are many chips inside that are not sold now. they are fully Unobtainum status. (pro shops cannibalize the dead to make yours work..... $$$$$ method)
3: the only full tester service I know, is Cardone at $400 R&R. but why worry all this when good ecu can be had used for $50 , put in new caps and run 20 more years.
http://en.wikipedia.org/wiki/Unobtainium
cases in point,....
if the regulator goes bad, there are no parts to buy, they are not made or sold....... if the caps short, this can and does happen.
line 2 on my page.
"This page (1st published in 2007) covers the most rudimentary repairs & failures ,tests , the most common! Advanced ECU testing, is both complex, and expensive."
line one in the main menu covers who does it right. #1
9 out of 10 ecu are easy to fix.... the others, are impossible or takes the magic of useless donor ECU to fix yours... rare parts. or becomes a DONOR itself.
keep in mind most failures are the cause of the caps. shorting. most. but hot wiring eCU's outputs gets #2 billing,,,,or shorted injectors....
see these white and black S.I.P's , they are not sold on earth..... (new) SIPS = single inline package.. or the processor..(programmed)
http://www.fixkick.com/ECU/hell/html/image_16.html
http://www.fixkick.com/ECU/5vdc-Refr-sup...IC7_8v.JPG
does your ECU have a working +5VDC refr pin? 4.75 to 5.25vdc spec ?
is IC7 bad?
http://www.fixkick.com/ECU/secrets/56B30-5VDC.jpg
i do not do repairs now, I'm fully retired now. sorry.
the good used ECU is $50 (if patient and IGNORE scalpers on fleabay , real private sales are fair.....)
a dead one is worth zero. (a true pig in poke, it is) (but buy one and chances are good it can be fixed....)
the question arises. how much labor to put in to zero value ECU, about 1 hr. max. IMO.
as the car and ECU ages. the failures can get worse. what was true in 2007 may not be true today. (
and for sure if the acid is allowed to eat it up for years, un checked.
I hope i've helped you in some small way....
is the CEL dead key on too, ? flashing 12s missing is clearly bad ECU but only if the lamp is good, and" key ON" CEL glows. ??
Does the key on CEL glow.>????
as my page says, ECU. not all ECU are repairable.
1: some acid damage can not be corrected. (for 2 reasons, damage to copper too extensive or it destroys parts not sold now.)
2: there are many chips inside that are not sold now. they are fully Unobtainum status. (pro shops cannibalize the dead to make yours work..... $$$$$ method)
3: the only full tester service I know, is Cardone at $400 R&R. but why worry all this when good ecu can be had used for $50 , put in new caps and run 20 more years.
http://en.wikipedia.org/wiki/Unobtainium
cases in point,....
if the regulator goes bad, there are no parts to buy, they are not made or sold....... if the caps short, this can and does happen.
line 2 on my page.
"This page (1st published in 2007) covers the most rudimentary repairs & failures ,tests , the most common! Advanced ECU testing, is both complex, and expensive."
line one in the main menu covers who does it right. #1
9 out of 10 ecu are easy to fix.... the others, are impossible or takes the magic of useless donor ECU to fix yours... rare parts. or becomes a DONOR itself.
keep in mind most failures are the cause of the caps. shorting. most. but hot wiring eCU's outputs gets #2 billing,,,,or shorted injectors....
see these white and black S.I.P's , they are not sold on earth..... (new) SIPS = single inline package.. or the processor..(programmed)
http://www.fixkick.com/ECU/hell/html/image_16.html
http://www.fixkick.com/ECU/5vdc-Refr-sup...IC7_8v.JPG
does your ECU have a working +5VDC refr pin? 4.75 to 5.25vdc spec ?
is IC7 bad?
http://www.fixkick.com/ECU/secrets/56B30-5VDC.jpg
i do not do repairs now, I'm fully retired now. sorry.
the good used ECU is $50 (if patient and IGNORE scalpers on fleabay , real private sales are fair.....)
a dead one is worth zero. (a true pig in poke, it is) (but buy one and chances are good it can be fixed....)
the question arises. how much labor to put in to zero value ECU, about 1 hr. max. IMO.
as the car and ECU ages. the failures can get worse. what was true in 2007 may not be true today. (
and for sure if the acid is allowed to eat it up for years, un checked.
I hope i've helped you in some small way....
http://www.fixkick.com