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Discussion in 'Honda' started by E-Tech, Nov 9, 2009.
Car can start but how is the idling?
Can rev pass 3500 rpm?
1. there are rough idle.
2. have not tried yet, i think it can't pass 3500.
Bro E-Tech, on PT2 Accord ECU, where is the IC17 located? because in this ECU, layout totally different, so I can't find it. But tracing from A7, followed it to ZQ17.
Just want to confirm before I solder in a replacement.
Sorry no PT2 onhand to confirm but is zq17 TA8903SN? Yes then shoud be correct.
No, this board doesn't use the TA8903SN power supervisor ic.
In fact that was the component i looked for first before tracing the A7 back to ZQ17.
The board has nothing in common with the normal P08 b/d series ecu.
Just though i'd try fixing it since encountered the same problem before in B/D series ecu.
Its late, so i guess i'll try checking the part to see what it actually does tommorow. Thanks for the reply.
You hv a broken connection sonewhere....u need to check back all the areas you have done work on.....
Not solved yet, still got solid cell.
double checked all trace again, not see any abnormal.
can you specific the area that i have to inspect?
note that the P27 ecu is quite same as P28 but it is no VTEC.
Big thank.. e-tech
Email me some good pictures...
problem was solved. since i replaced some part from the scrap ECU.
here was done mine
1. change M7U016 --> not solved
2. change many TTL ic 74HCxxx --> not solved
2. change main processor 66207 --> problem solved
thx e-tech for yr help. :proud:
one question,if this part problem..what are the eccfect while we are driving?or maybe check light engine will on at tachometer?or engine knockign or what sym[htom that we can detect this capacitor problem?
---------- Post added at 01:14 PM ---------- 6 hour anti-bump limit - Previous post was at 01:14 PM ----------
one question,if this part problem..what are the effect while we are driving?or maybe check light engine will on at tachometer?or engine knockign or what sym[htom that we can detect this capacitor problem?
Actual worst case senario... big cap leak and short or circuit broken.... becomes hot and burnt a hole
on the ecu pcb. Car stink from the smell of burnt pcb. Car cannot start.
Others will be like poor idling or engine check light comes on....
I have experience quite same case for my P30 | ECU. The capacitor leaked and the trace is burn. This cause vtec sometimes on and off. My friend help me replace the cap and luckily it still works.