How the 4A-GE ECU works

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How the 4A-GE ECU works

12-27-2006, 12:34 AM

Post: #60

JMR_AW11 Offline

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Posts: 28
Joined: Jan 2006
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Harvey Wrote:Hi JMR;

I have only just stumbled across this forum recently and have just read this thread. Is very interesting work you have been doing!!

So, are you still able to modify people's ecu and supply them with the kit to re-program them??

I have a few Mk1 (b) (1986-89) ecu's about somewhere, so dont mind having one butchered . My aw11 is currently off the road but i am trying to sort it out! And wouldnt mind trying my hand at this ecu, rather then buying something like a Greddy emange piggy back ecu.

Hi Harvey
I'm not doing much with ECUs at present as I'm taking a break from electronics. I did some work last Summer on the JDM 4AGZE ECU and produced a diagnostic reader and a (big ugly prototype) reprog board for this ECU with all the code/maps etc in external EPROM.

The big circuit board replaces the original MCU chip on the ECU and it connects via two big ribbon cables to the main ECU PCB underneath.
Basically, you can see it still uses the factory MCU chip but it runs it in a special mode that addresses external memory.

It also has the diagnostic reader built into the board as well.

I plan to look again at this stuff in the new year.

Datalogger PCB only (someone is beta testing this for me)
[Image: AEU86 AE86 - ]

Reprog Piggy Board
[Image: AEU86 AE86 - ]

Datalogged Data
[Image: AEU86 AE86 - ]

Some genuine JDM 4AGZE ECU Code showing SC Relay control code
[Image: AEU86 AE86 - ]

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Messages In This Thread

How the 4A-GE ECU works - JMR_AW11 - 01-10-2006, 09:52 PM

[] - alimonos - 01-10-2006, 10:31 PM

[] - firehawk - 01-10-2006, 10:53 PM

[] - banpei - 01-10-2006, 11:12 PM

[] - JMR_AW11 - 01-10-2006, 11:19 PM

[] - ZaX - 01-11-2006, 10:38 AM

[] - NoHachi - 01-11-2006, 10:50 AM

[] - dreja - 01-11-2006, 11:34 AM

[] - gon - 01-11-2006, 12:31 PM

[] - alimonos - 01-11-2006, 12:50 PM

[] - Ivan141 - 01-11-2006, 12:50 PM

[] - irishtwincam - 01-11-2006, 02:07 PM

[] - JMR_AW11 - 01-11-2006, 02:37 PM

[] - JMR_AW11 - 01-11-2006, 02:47 PM

[] - JMR_AW11 - 01-11-2006, 02:58 PM

[] - phatBob - 01-12-2006, 01:39 AM

[] - JMR_AW11 - 01-12-2006, 10:57 AM

[] - NoHachi - 01-12-2006, 11:13 AM

[] - firehawk - 01-12-2006, 12:12 PM

[] - JMR_AW11 - 01-12-2006, 02:34 PM

[] - dAYTONA - 01-12-2006, 06:51 PM

[] - Denmark - 01-12-2006, 11:55 PM

[] - JMR_AW11 - 01-13-2006, 01:02 AM

[] - JMR_AW11 - 01-13-2006, 01:10 AM

[] - alimonos - 01-13-2006, 10:38 AM

[] - JMR_AW11 - 01-13-2006, 10:52 AM

[] - firehawk - 01-13-2006, 01:24 PM

[] - JonT - 01-13-2006, 01:46 PM

[] - Denmark - 01-13-2006, 10:37 PM

[] - phatBob - 01-14-2006, 01:08 AM

[] - JMR_AW11 - 01-17-2006, 01:21 AM

[] - JMR_AW11 - 01-17-2006, 01:26 AM

[] - NoHachi - 01-17-2006, 01:37 AM

[] - JMR_AW11 - 01-17-2006, 03:04 PM

[] - Denmark - 01-17-2006, 04:23 PM

[] - alimonos - 01-18-2006, 02:19 AM

[] - phatBob - 01-19-2006, 01:20 AM

AE86 ECU software - irishtwincam - 01-19-2006, 04:23 PM

[] - El_Camino - 05-21-2006, 10:59 AM

[] - cannabolic - 05-26-2006, 09:50 AM

[] - np303 - 12-05-2006, 07:46 PM

[] - SuperHessu - 12-06-2006, 12:16 PM

[] - NoHachi - 12-06-2006, 12:58 PM

[] - SuperHessu - 12-06-2006, 01:35 PM

[] - banpei - 12-06-2006, 06:45 PM

[] - Ivan141 - 12-06-2006, 07:35 PM

[] - irishtwincam - 12-06-2006, 09:44 PM

[] - banpei - 12-07-2006, 10:43 AM

[] - alimonos - 12-07-2006, 11:02 AM

[] - Bad_Dog - 12-07-2006, 11:13 AM

[] - firehawk - 12-07-2006, 01:44 PM

[] - Bad_Dog - 12-07-2006, 02:20 PM

Greetings from the States - Red - 12-07-2006, 07:35 PM

Re: Greetings from the States - JMR_AW11 - 12-26-2006, 01:39 PM

[] - JMR_AW11 - 12-26-2006, 02:46 PM

[] - Harvey - 12-26-2006, 08:52 PM

[] - Red - 12-26-2006, 08:57 PM

[] - JMR_AW11 - 12-27-2006, 12:14 AM

[] - Red - 12-27-2006, 12:33 AM

[] - JMR_AW11 - 12-27-2006 12:34 AM

[] - Harvey - 12-27-2006, 01:14 AM

[] - np303 - 02-25-2007, 05:43 AM

[] - domi - 02-25-2007, 06:46 AM

[] - firehawk - 02-25-2007, 09:13 PM

[] - domi - 02-25-2007, 10:31 PM

[] - jamiemirror - 02-25-2007, 11:07 PM

[] - firehawk - 02-26-2007, 09:47 AM

[] - domi - 02-26-2007, 11:16 AM

[] - JMR_AW11 - 02-28-2007, 09:32 PM

[] - domi - 03-03-2007, 09:10 AM

[] - Toyota T23 - 03-04-2007, 12:22 AM

[] - Toyota T23 - 03-09-2007, 01:50 AM

[] - JMR_AW11 - 03-09-2007, 08:43 PM

[] - Toyota T23 - 03-10-2007, 01:35 AM

[] - Red - 03-11-2007, 03:48 AM

Question About ECU - CHACAMAN - 03-26-2007, 01:43 PM

[] - domi - 03-27-2007, 07:48 AM

little black box - thanhngo - 07-26-2007, 03:41 PM

ECU - stefanj2k - 07-27-2008, 07:46 PM

[] - banpei - 07-27-2008, 10:56 PM

[] - stefanj2k - 07-30-2008, 09:29 PM

[] - XJS - 07-30-2008, 10:31 PM

[] - banpei - 07-31-2008, 11:58 AM

[] - stefanj2k - 08-15-2008, 05:05 PM

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