Engine Control Unit (ECU)

[Nas_RS]

Hello..

i need an urgent help guys ...

I have my car ECU damage and my car if from Japan. Have anybody replace their ECU with one coming from UK or US.

My ECU is 89661-52b10, whereas in UK or US it is 89661-52E90 (different)

Can it be re-program for the key?
I have a Toyota Yaris Year Feb 2006, NCP91

Thanks for helps!

[CTScott]

The ECMs are specific to the engine type and to the key security system (transponder key, smart entry, etc.). Which engine and key security does your 06 have?

[Nas_RS]

I have engine start with wireless key...do you think the ecu is programmable

[CTScott]

I have engine start with wireless key...do you think the ecu is programmable

No - The ECM is definitely not programmable. You will have to find an ECM with the same part number as your current one.

[Nas_RS]

wow.. that the most difficult to get, any idea about Standalone ECU

Thanks for help

[thebarber]

buy echo_hrs's old RS ecu

http://www.microimageonline.com/forums/showthread.php/4176-echo_hrs-Part-Out...

[CTScott]

buy echo_hrs's old RS ecu

http://www.microimageonline.com/forums/showthread.php/4176-echo_hrs-Part-Out...

Unfortunately that won't work. I actually have a JDM ECM that Steve imported along with some of the other pieces associated with the smart entry system, but even that is the incorrect version for his car.

[CTScott]

wow.. that the most difficult to get, any idea about Standalone ECU

Thanks for help

A standalone would handle the fuel, ignition, etc. aspects of running the engine, but won't handle all of the other functionality of the ECM. What exactly is you ECM doing or not doing?

[Nas_RS]

MY OEM ECM is damage, i need to replace it and all work also the keyless entry

[Nas_RS]

Mine is a 89661-52b10

[CTScott]

MY OEM ECM is damage, i need to replace it and all work also the keyless entry

How exactly is it damaged?

The reason I ask is that I have spent enough time inside of the ECM that I may be able to repair it, depending on what happened to it.

[Nas_RS]

Yeps..I'm not getting power on the third ignition and spark plugs which result low in torque..the wiring was check OK, they suspect the chip for mapping is damage

[CTScott]

Yeps..I'm not getting power on the third ignition and spark plugs which result low in torque..the wiring was check OK, they suspect the chip for mapping is damage

Did they replace the coil pack on that plug? With the circuitry within the coil packs, you can't test them with a multimeter, like you could with a traditional coil.

If it is definitely the ECM that is not outputting to that coil pack, it may be a fairly easy repair to replace the driver for that ignition output (which is a transistor).

[Nas_RS]

Where is the coil packs please...the transistor has been check and inverse also still the power not coming in the third line ignition

[CTScott]

Where is the coil packs please...the transistor has been check and inverse also still the power not coming in the third line ignition

The coil pack is the part on top of the spark plug. The transistor has probably not been checked, since that is a part on the circuit board inside of the ECM.

[ricepower]

In event of the main ecu replacement, is there anything to do like programming or replace other ecu(transponder, abs etc.)

Is it a direct bolt on with same part number? I am reading the service manual and observed that it needs only to program the VIN which is optional I guess..

CTScott, any thoughts on this?

[CTScott]

In event of the main ecu replacement, is there anything to do like programming or replace other ecu(transponder, abs etc.)

Is it a direct bolt on with same part number? I am reading the service manual and observed that it needs only to program the VIN which is optional I guess..

CTScott, any thoughts on this?


Because he has the smart entry system, that system will need to be resynced with the new ECM (which requires the techstream tool to do).

[Nas_RS]

Here in Mauritius their is little expertise to check or repair the ECU, that's why i am looking for an ECU with the Key less key include for replacement

[Nas_RS]

Anyone who can help me getting the ECU, please let me know

[CTScott]

The Yahoo.jp auctions will be your best bet for finding one.

Are you driving the car now, or is it just sitting waiting for an ECM? If it is just sitting, why don't you ship me the bad ECM and I will see if I can fix it for you.

[Nas_RS]

Yeps just sitting for now and the car is at the mechanic garage, the ECM is with him

[Nas_RS]

How to buy on the Yahoo.jp auctions can you help pls.

I guess the cost of sending the ECM and time it will take to reach you from where i am in Mauritius, will cost me another ECM :)

[CTScott]

This is a good site for info on how to purchase things via yahoo.jp:

http://www.ffmusic.info/yjtutorial.html

[Nas_RS]

Thx Dude, i will take a look at it :)

[Nas_RS]

Hello, CTScott..

My ECU Ref is 89661-52b10..its very difficult to get it in the market..
The ignition number is not getting power..

Any idea, repair, purchase, possible for another model example: 89661-52g10... can match

[CTScott]

Hello, CTScott..

My ECU Ref is 89661-52b10..its very difficult to get it in the market..
The ignition number is not getting power..

Any idea, repair, purchase, possible for another model example: 89661-52g10... can match

I think the 89661-52G10 would be fine. 89661-52B10 is for the NCP91 with the 1NZ-FE built from 05-07 and 89661-52G10 is for the NCP91 with the 1NZ-FE built from 2007-2009. Do you have a Toyota dealer where you are that would be able to deal with the reprogramming of the smart entry system (which requires the Toyota TechStream service tool to do)?

Last night I did some analysis of the ignition outputs and found that they do not go through a transistor, but rather are direct outputs from the Denso SE742 PWM Driver IC circled in the picture below. So, repairing your existing ECM would require swapping that IC with one from another ECM (it would be difficult to purchase that IC otherwise, as it is not an off-the-shelf item).

43889

[Nas_RS]

Lots of thanks for these info, helpful.
I get the car retutn from the garage. Can interchange the ignition and spark plugs to test if the third ignition is working, i want to check the wiring myself, i believe an ecu dont get damage easily, i can also buy another ecu to my ecu ic. We have a toyota dealer here they dont repair ecu but they reprogramme thats fine :) one thing gud

[Nas_RS]

I am getting that also but not b10, but b00
http://www.importmonster.com.au/view?url=http://page10.auctions.yahoo.co.jp/jp/auction/s220179421

[CTScott]

B00 is for the NCP91 with the CVT, so that wouldn't work for you.

[Nas_RS]

Hello, CTScott..

The Diagnostic Report is:
Total Codes: 001
Code001:
P0353 Ignition Coil C
Primary
Secondary
Circuit
Malfunction

Any idea, is it concern for the ECU

[CTScott]

Hello, CTScott..

The Diagnostic Report is:
Total Codes: 001
Code001:
P0353 Ignition Coil C
Primary
Secondary
Circuit
Malfunction

Any idea, is it concern for the ECU


My money is still on the coil pack. I would swap the #3 coil pack with one of the others to see if the problem moves to another cylinder.

[Nas_RS]

The coil pack is the stuff that come on the top of the spark plugs, i'm right

[CTScott]

The coil pack is the stuff that come on the top of the spark plugs, i'm right

Yes

[Nas_RS]

Okie, i will try swap or get another to check. Is it possible to swap wire also?

[CTScott]

Okie, i will try swap or get another to check. Is it possible to swap wire also?

No. The wire is part of the whole engine harness, as opposed to being a traditional spark plug wire.

[eseibel67]

If I was diagnosing a #3 misfire on a desert island, I would swap #3 and #4 coil packs and see if the problem follows the part.

[Nas_RS]

Hello guys, the swapping parts have already been done by the mechanic, with the help of Scott i am going to do it myself to ensure, i will buy or get a coil pack and check it.

I will try to test also the continuity of the wires #3 with multimeter <what you say Scott?>

If still not good i will buy an ECM link below, either programmed it for my car or swap the DENSO Chip to mine and get it work <Your advise Scott Please...>

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=120712384796&viewitem=


Thanks Guys...its about 2 weeks my car is not running...quite discourage :(

[CTScott]

You can test the continuity of the #3 coil wire from the ECM Connector C20, pin 83 (circled below) to the dark green wire on the cylinder 3 coil pack connector (C13, pin 3).

43914

43915

43916

The other three wires on the coil pack connector are common with all 4 coils, so you can check continuity between pins 1, 2, and 4 of the cylinder 3 coil pack connector to pins 1, 2 and 4 of another cylinder to make sure that all four wires on cylinder 3 are good.



The ECM in that link is a 52E90, so it won't be programmable for your smart entry, but would have the Denso IC to swap.

[Nas_RS]

Ok Scott for the Green, i got where to check it from pictures.
While for 1,2 & 4 you tell me to check to another cylinder on the entry of the ECM (the first picture plug)

[CTScott]

Ok Scott for the Green, i got where to check it from pictures.
While for 1,2 & 4 you tell me to check to another cylinder on the entry of the ECM (the first picture plug)

Yes. For the 1 (light green), 2 (yellow) and 4 (white with black stripe) pins you check from the cylinder 3 connector to the same position on another cylinder connector.

[Nas_RS]

Ok thanks and i assume that the engine start must orange, not start the engine

[Nas_RS]

Going for a ECM 52E90...due to the ECM 52B10 not getting on the market, due to Japan Radiation issue

[CTScott]

Ok thanks and i assume that the engine start must orange, not start the engine

Yes. Engine must be off when testing continuity and it would not be a bad idea to also disconnect the negative battery terminal as well.

[Nas_RS]

Thanks Scoot, I'm going to try that and let you know the outcome

[Nas_RS]

Hello, Scott what happen if i try to merge the wire from cylinder 3 to cylinder 2 which is working. mean get the 2 ignition working on same wire. is it possible?

[CTScott]

Hello, Scott what happen if i try to merge the wire from cylinder 3 to cylinder 2 which is working. mean get the 2 ignition working on same wire. is it possible?

That would not be a good idea. That would make cylinder 3 fire at the wrong time.

[Nas_RS]

ok thanks dude, i wont got for merging wires.

Does the cylinder work across, while swapping the coil pack, can i take from any.
Is there a pairing (Cylinder 1:3, Cylinder 2:4)

[CTScott]

ok thanks dude, i wont got for merging wires.

Does the cylinder work across, while swapping the coil pack, can i take from any.
Is there a pairing (Cylinder 1:3, Cylinder 2:4)

They fire sequentially, as opposed to in pairs. You can swap it with any other one. The failure code should change from P0353 to P0351, P0352, or P0354 if the coil is bad, and depending on which cylinder gets the bad one.

[Nas_RS]

OK scotts, i shall try that tomorrow GMT+4, hope that's going work.
The idea of merging the wires was just to see what happen, if all cylinders work and no issues, which may conclude their is an issue on the wiring of cylinder 3 or the ECM itself

[tropicalrs]

Nas have u been able to fix the problem?

[Nas_RS]

Nope i am going to try all these steps tomorrow (with Scott helpful info)

[tropicalrs]

here it is Nas

http://www.myjapanbrand.com/db/detail.php