PCM Fi replacment


Information and questions on GL1800 Goldwings (2001-2017)
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Skull Riders
Posts: 7
Joined: Thu Jun 18, 2020 6:46 pm
Location: San Jose, Costa Rica
Motorcycle: 2005 Honda Goldwing 1800A

PCM Fi replacment

Post by Skull Riders »



Trying to replace my ECU with another used one. My GL1800a is a US version (non-HISS)

How can one figure out if a 38770-MCA-831 ECU has a HISS incorporated or not?


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AZgl1800
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Location: Lake Oologah Indian Territory USA
Motorcycle: '02 GL1800
2009 Piaggio MP3 250cc

Re: PCM Fi replacment

Post by AZgl1800 »

yours 38770-MCA-831
38770-MCA is all that matters, it is the ECM, Honda changes the last 3 digits each year.... no matter, it is the same ECM.

I used a 2004 ECM in my 2002 bike and it runs just fine. You can use any ECM from 2001-2005.
Note that 2003 is cheaper new than 2005 by several hundred dollars.


2005 USA
https://www.partzilla.com/catalog/honda ... l1800-a-05

2004 USA
https://www.partzilla.com/catalog/honda ... ntrol-unit

2003 USA
https://www.partzilla.com/catalog/honda ... ntrol-unit is $941.43

2002 USA
https://www.partzilla.com/catalog/honda ... ntrol-unit $941.43 the same as 2003.

2001 USA also $941.43
https://www.partzilla.com/catalog/honda ... ntrol-unit

. as for used, you just have to search until you find one.

I use www.SearchTempest.com which searches eBay and Amazon

.
~John

'02 GL1800
2009 Piaggio MP3 250cc
Skull Riders
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Re: PCM Fi replacment

Post by Skull Riders »

;) that is very good to know John,

So the H.i.S.S. has nothing to do with the ECM software, But it with the way the harness is installled with the H.I.S.S. RF recepter on the ignition?

If that is so, My next question is: is it possible to install a H.i.S.S. System on a U.S. Version GL1800 if I have european ECM with it's Key with chip & a RF receptor? OR with a European ECM on a U.S. version bike is there a way to bypass H.I.S.S. system?
Skull Riders
Posts: 7
Joined: Thu Jun 18, 2020 6:46 pm
Location: San Jose, Costa Rica
Motorcycle: 2005 Honda Goldwing 1800A

Re: PCM Fi replacment

Post by Skull Riders »

:ugeek: better said: to install a European ECM on a U.S. version bike is there a way to bypass H.I.S.S. system?
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AZgl1800
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Location: Lake Oologah Indian Territory USA
Motorcycle: '02 GL1800
2009 Piaggio MP3 250cc

Re: PCM Fi replacment

Post by AZgl1800 »

Skull Riders wrote: Tue Jul 14, 2020 8:02 am ;) that is very good to know John,

So the H.i.S.S. has nothing to do with the ECM software, But it with the way the harness is installed with the H.I.S.S. RF receptor on the ignition?

If that is so, My next question is: is it possible to install a H.i.S.S. System on a U.S. Version GL1800 if I have european ECM with it's Key with chip & a RF receptor? OR with a European ECM on a U.S. version bike is there a way to bypass H.I.S.S. system?
I know ZERO about the HISS system, all I can tell you is that for the USA market, all of the bikes from 2001-2005 can use the same ECU, why they are calling it a PGM I don't know.

Knowing this, if you must purchase a brand new ECM, get one for the earlier year bikes and save yourself a few 100 bucks. I have heard that the 2005 has a modified fuel curve, but you would never feel that in the real world.

If your bike came with the HISS ECM, it is possible that it won't start and run with a USA ECM.
that is above my Pay Grade.

As I mentioned, my 2002 threw a bad left O2 sensor code, 25 or 26?
some diagnostics with a hammer and a good DVM that has Frequency Measurement capability let us know that both O2 sensor were working, we could see a waveform on the connector at the ECM when the hammer hit the engine case next to the O2 sensor..

so, that meant the ECM was bad... I figured that I could fix it myself, but it is potted with Kryptonite or something harder than a diamond, I was unable to even chip it out.
So, I started searching for bikes being parted out, and stumbled onto a 2004 only 35 miles from my home. Called the guy up, and was there within the hour.

I am a happy camper, got it at a steal for $75.00
~John

'02 GL1800
2009 Piaggio MP3 250cc
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GoldWingrGreg
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Re: PCM Fi replacment

Post by GoldWingrGreg »

Just because parts fit and seam to work does not meant that using incorrect parts is a good idea. I highly recommend that you use the ECM cataloged for your year. As for getting a used on, and assuming that your Wing is a 2001-05, don't waist your money unless you know you are buying one that has recently been replaced. All 2001-05 ECMs are dying and the probability of buying one on it's death bed is high.


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