How can I tell if this is a red or black sticker for my ecu? I'm looking to replace it but don't want to get the wrong one. It's a 04 Toyota Prius
That's not the sticker you're looking for You're looking for the denso sticker which is short for nippon denso Toyota's electrical manufacturer as far as I know that thing comes with a red and the lighter model is the black I think sticker flips the ECU around on the other edge and you'll see the sticker on the end It is a foil sticker You see many of them throughout the car on many other electrical items including the yellow SRS plugs and electronics and what have you.
Battery control module for 2004 prius will look like this (2004 - mid-2006) Green sticker - mid-2006 - mid-2008 Red sticker - mid-2008 - 2009 You can use any of those battery control modules on your prius and they will work but 2006 thru 2009 have software with a different algorithm than 2004.
I'm curious as to why you want to replace it. Are you seeing signs of failure or corrosion? My experience with Dorman remanufactured Gen 2 Prius batteries is that the ECUs are typically in outstanding condition.
Funny you should mention that I had a guy out here doing a battery for an '07 late generation 2 and he told me and no uncertain terms that when you see corrosion on that orange plug at the HV computer on the front end of the battery Don't even waste your time cleaning it trying to reuse it so on and so forth you will be getting p o a a6 or AO6 or whatever it is codes that relate to that battery leakage so on and so forth He stated to me that when that starts he rounds up another computer with no corrosion clean whatever I think he says he can get them for $80 and that usually stops that dead in its tracks. I asked him why he thought that was blank stare. So I went and dug up the black label out of my '09 that when I put a new battery in it I used another HV computer that was in perfect condition didn't have a trace of corrosion anywhere near it cleaned up the plug which was not very dirty with good quality electrical contact cleaner and a brush let it dry but that battery together and let it rip The old computer that had some corrosion on it I took the cover off the back of it and took the board out put it on my light table that's used for photography and looking at negatives shining the light through the green board and looking at all the ways and circuitry with a lupe. I could not for the life of me see any trace damage on the circuit board at all even with the heavy green buildup on one or two of the pins going through the plug bending 90 straight to the board and soldered so I cleaned up the green and the mess and clean the board washed it in a circuit board washer but it stand out for 2 days put it back in another car and it's been fine for 2 years. So I'm not sure about the stories that people come up with for certain componentry.
And I still have a late 07 that no matter what I've done replace the HV battery getting ready to replace the HV batteries computer to make certain so on and so forth this particular car still throws the HV battery leakage code The down and dirty test from the plug out with your voltmeter connected to battery frame and the hot portion of the safety plug voltage is steady doesn't go up or down it just sits there In other words nothing no leakage apparently. So I don't know whether it's actually the HV computer which is what throws the code I guess or is it the tri delta do flotchy in the inverter That's another whole set of tests.
If was to replace anything it would be both the ecu and wiring harness, just to make sure the ecu is not faulty etc while I diagnose the problem. Maybe swap a few cells etc Had someone recommend that to me cause he was dealing with the p3000 code and it ended up being corrosion on the orange wiring
P0aa6 I think or very similar with the code 521 and 612 as the subcodes listed in the text this is the one where the HV battery voltage is leaking over to the frame of the car and getting involved with the 12 volts It's not directly related to the HV computer but one of my battery rebuilder says if all of a sudden you're getting this PO AA6 or whatever these kinds of codes he said to look at that battery control module very closely He believes that once those modules start setting codes even if you put it to a brand new battery for some reason he thinks it will still see something that allows it to set these codes I don't know what logic that follows or anything like that but I would assume he sees a lot more of these than I do batteries that is so I just take what he says with a grain of salt and we'll see like I said up above I took a high voltage battery computer completely apart and put it on a light table and looked at every circuit practically didn't see anything that would make me think anything would be going on with this circuit board this computer unless a component on the board is failed which I can't test all of that usually when things like that happens your signs of corrosion signs of stress legs on the circuit board are distorted overheated something.
Well I'm in the same state you are and on one side of that thing you're going to find you should find a blue or red foil sticker like everybody else is posted here so somebody scraped it off whatever Don't have a clue It didn't not come with one especially in North Carolina but I mean in any federal bill vehicle. And if it's been removed it's been done by somebody working messing around in there something.
