Used Toyota Ecu ?

Bill Owner/Technician Michigan Posted   Latest  
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Programming
2012 Toyota Tundra 5.7L (3UR-FBE) 5-spd (A750E)

Hello Group - I have a customer wanting to replace the ECU in there 2012 Tundra with a Used Unit. My question is can this be done with Techstream? or is it only doable with EEPROM methods. Thanks for your time and help!

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Kerry Mobile Technician
Ohio
Kerry
 

If you have a scan tool that can rewrite the VIN, like an autel for example, then you can do the 30 minute sequence that involves jump ring pin 13 to ground at the DLC. You can conveniently use pin 4 or 5 or your own ground. Make the jumper and then turn the key on and wait at least 30 minutes. You will likely see stability control lights and cruise control lights and stuff like that blinking…

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Paul Owner/Technician
California
Paul
 

You won't need the Techstream, but you will need to do a little work to make a used ECM play nice with the immobilizer. Connect a power supply to the car and then jumper ODBII pins 4 and 13. Turn the key to the on position and leave the car sitting for 45 minutes. When a new ECM is installed, it's ready to learn who its immobilizer partner is and learns the “G” code automatically. When a used…

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Jorge Mechanic
New York
Jorge
 

All I can say is, make sure it’s the same part number. Have had people bring me different ones and odd permanent codes pop up. The rest can be done manually and VIN change with a good scanner. That’s it

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Paul Owner/Technician
California
Paul
 

I forgot about the VIN in my previous reply. You'll be able to get the car started with just a jumper, but you'll need a Techstream to write a new VIN. Around 2005 most Toyota ECMs became writable, so there's no need to pull the EEPROM chip to write new data. Although reading an writing to an EEPROM is still a useful skill. If you like that one, here's a long sad tale where I'm the fool (but…

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Avishay Owner/Technician
California
Avishay
 

IM608 to change Vin Short cut 4+13 obd with a small clip for 30 mins while ignition is “ON” Lots of lights will be blinking that's normal

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Paul Owner/Technician
California
Paul
 

How do you like your IM608? I have an Autel Maxisys, which is actually a really nice scanner, so I like the brand. For immobilizer work I have an XTool AutoProPad from American Key Supply, which I use most of the time, but I have OE scan tools for the times when it doesn't work. What's nice is that I can bypass the whole SDRM thing most of the time (with no tokens or pay per use) and it's faster…

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Avishay Owner/Technician
California
Avishay
   

I have both and i use autopad for faster jobs instead of the IM that slowerrrrrrrrr.. Overall I transition from auyopad to IM due to raise of yearly fee that used to be according to your device - they used to have 3 different units each one was different fee cost and now all pretty much the same as IM. You get much more on IM from my point of view. Both are great machines and work pretty well…

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Paul Owner/Technician
California
Paul
 

Thanks for your response Avishay!

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James Diagnostician
Texas
James
 

The procedure is called communication ID registration. We always call it a handshake. But as mentioned in the other comments, jump TC to CG at the DLC3 connector. Start with key off, jump terminals, and then key on, engine off for 30 minutes (recommend using a battery charger in power supply mode). When I do this process, I will usually set a timer for 35 minutes just to be on the safe side…

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Bill Owner/Technician
Michigan
Bill Resolution
 

thank you guys very much for the quick information !!! As everybody has agreed a used ECM is no problem to install and there is no need to EEPROM unless you want to on this one.

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