Engine Control Unit (ECU)

[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/eB...4796&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).







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]

Originally Posted by 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)

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]

Originally Posted by Nas_RS

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]

Originally Posted by 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?

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]

Originally Posted by 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)

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