ECU info?

[touringteg]

My 2001 CDM ecu had a capacitor leak and it caused a repeated CEL for the evap system. Dave7 has that spare ecu now. I was lucky to purchase a local ITR owners 00-01 ecu, send it to jhpusa (jkatman) to bypass the immobilizer and send it back to me.

A02 - 97 USDM ITR
A03 - 98 USDM ITR
A04 - 00-01 USDM ITR (immobilizer)

C02 - 97 CDM ITR
C03 - 98-99 CDM ITR
C04 - 00-01 CDM ITR (immobilizer)

[Infinkc]

Shot of the inside

i wonder what program is on that chip, there are not alot of people that chipped these in this era. I was one of the few that can chip them, but that wasnt one of mine that i did. never seen that stamp before, i wonder if it is Comptech.

[coolhandluke]

i wonder what program is on that chip, there are not alot of people that chipped these in this era. I was one of the few that can chip them, but that wasnt one of mine that i did. never seen that stamp before, i wonder if it is Comptech.

You are one of the few! I only know of one other, a local, who was tuning ODBI & ODBII prior to Hondata entering the market. I bet you could share some stories.

[aklackner]

Shot of the inside

i wonder what program is on that chip, there are not alot of people that chipped these in this era. I was one of the few that can chip them, but that wasnt one of mine that i did. never seen that stamp before, i wonder if it is Comptech.

For theft recovery, bare shell purchases, or other situations where you no longer have your original USDM ITR ecu you may still have issues with inspections depending on your state.

JDM (and to my knowledge any non-USDM) ECUs will not pass CA or other state inspections where inspections connect to OBD2 port for testing. (Non-USDM ecus may also not have a compatible tune given fuel regionally available).

It probably goes without saying but OBD1, OBD1 w/s300, or aftermarket (AEM or other standalone) ecus will not pass state inspections that rely on OBD2 diagnostics either.

Also OBD2b-a harness jumpers may not work to pass inspections either. Even if inspectors don't look, catch, or care about the jumper some, if not all these harnesses, don't support the OBD2 diagnostics port. Rywire for instance states that their harness is not compatible with the OBD2 port the last time I called them about this.

For what it's worth a stock motor, setup through the steps above will run without CEL on a USDM GSR ecu of the correct generation for your year\model. However, tuning profiles will be different than the ITR ecu. Maybe a short term solution but not something that you're really going to want as a continuing daily solution.

For 00-01 ITRs running OBD2b ECUs you'll have to deal with immobilizer as well. If purchasing an OBD2b ecu try to get the vin of the car it originally came from this can help get re-programming done and verify you're not purchasing stolen property. Qualified locksmiths and dealers can re-program keys\ecus to function or there are some other solutions out there.

If purchasing a used ecu always confirm the sticker on the connectors (inside the ecu) shows the correct identifier (P73-02 for 97, p73-A03 for 98-99, p73-A04 for 00-01). I also recommend confirming the ECU ROM code (three large digits on the largest chip on the ecu board) since these unlike a sticker cannot be changed. From what I understand these represent the program that's actually on the chip and is unique to each model. Correct codes should be 111 for 00-01 ITR, 714 for 98-99, and 497 for 97. If anyone has differing codes please let me know, these came from 98 and 01 ecus I have access to and information on http://wikitest.pgmfi.org/bin/view.pl/L ... itionCodes

497 is correct oem for A02
714 for A03
111 for A04

[Infinkc]

i wonder what program is on that chip, there are not alot of people that chipped these in this era. I was one of the few that can chip them, but that wasnt one of mine that i did. never seen that stamp before, i wonder if it is Comptech.

You are one of the few! I only know of one other, a local, who was tuning ODBI & ODBII prior to Hondata entering the market. I bet you could share some stories.

I actually have chips still for the b18c, mugen, spoon, jun. Maybe i should look to sell them off again. They have just been sitting for years. Would be good for the OPs ECU as he could just pop them in and try different programs. I remember using the mugen one in my old car.

[Stin1]

My 2001 CDM ecu had a capacitor leak and it caused a repeated CEL for the evap system. Dave7 has that spare ecu now. I was lucky to purchase a local ITR owners 00-01 ecu, send it to jhpusa (jkatman) to bypass the immobilizer and send it back to me.

A02 - 97 USDM ITR
A03 - 98 USDM ITR
A04 - 00-01 USDM ITR (immobilizer)

C02 - 97 CDM ITR
C03 - 98-99 CDM ITR
C04 - 00-01 CDM ITR (immobilizer)

Does katman replace burnt capacitors ? Someone sent a p73 ecu to one of those ecu rebuilding place and he received a rebuilt p72 and couldn’t get his original ecu back. I know katman is very reliable and trustworthy. I wouldn’t hesitate to deal with him.

[aklackner]

Be aware when the capacitors burn out they sometimes cause other damage. Replacing the capacitors may not fix the ecu.

Replacing the capacitors is pretty easy to do yourself with a de-soldering iron and a flux pen. Seems a bit goofy but I’ve used successfully on multiple projects including my ecu.

It’s been a while since I looked but I think Hondata used to sell a kit of the capacitors as a set.

But I’m pretty sure Katman would do it for you if you’d rather send out.

[Stin1]

Be aware when the capacitors burn out they sometimes cause other damage. Replacing the capacitors may not fix the ecu.

Replacing the capacitors is pretty easy to do yourself with a de-soldering iron and a flux pen. Seems a bit goofy but I’ve used successfully on multiple projects including my ecu.

It’s been a while since I looked but I think Hondata used to sell a kit of the capacitors as a set.

But I’m pretty sure Katman would do it for you if you’d rather send out.

If I was assured that the capacitor is burnt and someone can fix it I am game. This is a Honda problem. Water intrusion into the evap zaps the evap solenoid, stop valve,& or the ecu .

[aklackner]

If the top of the capacitor is expanded (the silver part with the X is no longer flat) it’s blown.