Different ECU of AE86 ? ? ?

[Ivan141]

Just had a better look, they are indeed all zenki ECU's.. But I do know that zenki and kouki dont mix with these things. These look exactly like the ones I have seen in the netherlands, so I guess these came from mainland europe map sensored cars..

[robokill]

rev limiter of a zenki hits at 8200 rpm and on the kouki on 7800

[JMR_AW11]

Ivan141 Wrote:Just had a better look, they are indeed all zenki ECU's.. But I do know that zenki and kouki dont mix with these things. These look exactly like the ones I have seen in the netherlands, so I guess these came from mainland europe map sensored cars..

In the UK the 89661-xxxxx numbers for the AE86 are

89661-12040
89661-12130

The rev limit is 7600rpm on these UK AE86 ECUs. It limits at 7600rpm and the fuel stays cut until the rpm falls below 7400rpm.

The ECU PCB on these ECUs is slightly different to the ones pictured above. I think the UK numbers are for 1985 cars as the date codes on the chips show 1985. The date code on the ECUs on this thread show 1983 so they might be older.

[banpei]

robokill Wrote:rev limiter of a zenki hits at 8200 rpm and on the kouki on 7800

That's funny: I'd expect it the other way around.

[Royalmatt]

JMR_AW11 Wrote:Does the main MCU chip say 151801-0481 on all three ECUs?

If so I would guess all three are the same and will be interchangeable.

The fact that the 89661-12060 number is on the lid of all three backs this up. (unless the lid has been swapped)

If you change the MCU crystal frequency you will also affect the fuelling and ignition timing slightly.

What country are these AE86 ECUs from?

Yes,
ECU 1 ,2 --> Belgium
ECU 3--> France

[JMR_AW11]

Royalmatt Wrote:[quote="JMR_AW11"]Does the main MCU chip say 151801-0481 on all three ECUs?

Yes,
ECU 1 ,2 --> Belgium
ECU 3--> France

In that case the MCU has the same masked ROM pattern programmed into it in all 3 ECUs. The MCU looks different from the outside but it will be the same device in a slightly different case package.

All 3 ECUs should be the same.

Are these ECUs easy to obtain in France? I have done a lot of research into the UK 4A-GE ECU and would like to read out the ROM pattern from the MCU of one of these French ECUs.

[tolisspi]

ECU 5?

[cue]

so now you boys got me worried, i have a simple question, will a ECU out of a 1987 AE82 FWD (4age) UK car go in a 1987 AE86 RWD jap import???

[tolisspi]

This moment i have done the other. I have an AE86 ecu connected on the AE82 harness and i think work

[tolisspi]

but my ae86's ecu is connected on celica's harness!



But its different the MCU ....-0482. Strange!