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3rd gen T4Rs
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https://www.toyota-4runner.org/3rd-gen-t4rs/)
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New ECU Not Working
(
https://www.toyota-4runner.org/3rd-gen-t4rs/312328-new-ecu-not-working.html)
| gruenegenes |
11-04-2023 03:06 PM |
New ECU Not Working
My 4Runner runs fine with the exception of a brief power loss that happens 1 to 2 times/year. Last time the code said the ECU was bad.
I ordered a remanufactured ECU from Flagship One and the vehicle would crank but not start. I sent it back twice and all three units had the same problem - It cranks a but won’t start. I put the old one in and it starts fine. Am I doing something wrong?
2002 SR5 4WD
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| _Ace_ |
11-04-2023 09:30 PM |
What code is your scanner reading?
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| Bad Luck |
11-06-2023 09:59 AM |
Quote:
Originally Posted by gruenegenes
(Post 3817908)
My 4Runner runs fine with the exception of a brief power loss that happens 1 to 2 times/year. Last time the code said the ECU was bad.
I ordered a remanufactured ECU from Flagship One and the vehicle would crank but not start. I sent it back twice and all three units had the same problem - It cranks a but won’t start. I put the old one in and it starts fine. Am I doing something wrong?
2002 SR5 4WD
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Sounds like the new ECM's don't have your immobilizer programmed into it. What was the original trouble code?
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| gruenegenes |
11-06-2023 10:43 AM |
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| Bad Luck |
11-06-2023 11:41 AM |
Quote:
Originally Posted by gruenegenes
(Post 3818026)
|
As far as I know all 01-02's used an immobilizer system. There's a couple people that have reflashed their immobilizer but I can't remember who it was or how they did it.
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| phattyduck |
11-06-2023 04:35 PM |
Quote:
Originally Posted by gruenegenes
(Post 3818026)
|
https://i.imgur.com/DFJ5Au9.jpg
Top: No immobilizer
Bottom: Immobilizer
Which one do you have?
Immobilizer ECU and no immobilizer in vehicle = no start
Immobilizer ECU and mis-matched programming = no start
The immobilizer does not stop the engine from cranking, it stops it from starting.
-Charlie
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| Bad Luck |
11-06-2023 04:47 PM |
Quote:
Originally Posted by phattyduck
(Post 3818085)
https://i.imgur.com/DFJ5Au9.jpg
Top: No immobilizer
Bottom: Immobilizer
Which one do you have?
Immobilizer ECU and no immobilizer in vehicle = no start
Immobilizer ECU and mis-matched programming = no start
The immobilizer does not stop the engine from cranking, it stops it from starting.
-Charlie
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Was that only for 01-02? My 2000 Limited had an immobilizer and the keys looked like the top key in your photo.
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| gruenegenes |
11-08-2023 07:35 AM |
Quote:
Originally Posted by phattyduck
(Post 3818085)
https://i.imgur.com/DFJ5Au9.jpg
Top: No immobilizer
Bottom: Immobilizer
Which one do you have?
Immobilizer ECU and no immobilizer in vehicle = no start
Immobilizer ECU and mis-matched programming = no start
The immobilizer does not stop the engine from cranking, it stops it from starting.
-Charlie
|
I’m trying to upload a pic but it keeps telling me upload failed. The top of the key is thin black plastic. Nothing like the thickness of our 2016 highlander or 2017 tundra. It’s also generic. I don’t think it has a chip in there. Does that mean it does not have an immobilizer?
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| _Ace_ |
11-08-2023 11:34 AM |
Your image is too big. If you resize it to a smaller resolution/file size you can upload it.
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| gruenegenes |
11-08-2023 02:57 PM |
1 Attachment(s)
Quote:
Originally Posted by _Ace_
(Post 3818271)
Your image is too big. If you resize it to a smaller resolution/file size you can upload it.
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Thank you. Compressed photo attached
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