06-06-2022, 03:12 PM
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#16
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Quote:
Originally Posted by Team_Jake
If you have one blank plug, that's where the immobilizer gets plugged in, so it looks like that method won't work. The thread I linked in post #8 will get you started. If you are good with computers then maybe it's within your skill set, it gets very complicated though.
I know
@ phattyduck
had this exact issue at one point, I would like to ask him to chime in just to get a second opinion.
I know
@ Brian.
can get your ECU re-flashed if you send it to him. Best of luck! |
Well, now I’m confused.
The blank plug is on the Tacoma ECU. If it has an immobilizer why would it be blank?
I may be wrong but I’m almost certain my 4R does not have an immobilizer. There’s no Security plate and light anywhere on the dash and it only came with a single blank valet key when I bought it.
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06-06-2022, 03:22 PM
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#17
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Quote:
Originally Posted by Huey.Raine
Well, now I’m confused.
The blank plug is on the Tacoma ECU. If it has an immobilizer why would it be blank?
I may be wrong but I’m almost certain my 4R does not have an immobilizer. There’s no Security plate and light anywhere on the dash and it only came with a single blank valet key when I bought it.
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Since your 4Runner doesn't have an immobilizer there isn't a plug in the 4Runner harness for the immobilizer stuff. (The immobilizer is part of the ECU.) If the Tacoma ECM had an immobilizer then that Tacoma would have had a plug for the ECM immobilizer in the Tacoma vehicle harness. Does that make sense?
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2000 SR5 V6 Manual 4WD https://www.toyota-4runner.org/3rd-g...biography.html
2000 Limited V6 Auto E-Locker Sold 3/2022
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06-06-2022, 03:32 PM
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#18
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Quote:
Originally Posted by Team_Jake
I know
@ phattyduck
had this exact issue at one point, I would like to ask him to chime in just to get a second opinion. |
The research I've done is for removing the immobilizer from an ECU to use it in a non-immobilizer 4Runner.... so not quite the same.
I'd definitely suspect a minor wiring incompatibility, but even then, the Check-Engine light should illuminate with the key in the "ON" position with the engine off.
If you can't find diagrams online, get a 2-day subscription to the Toyota TIS system and download what you need...
-Charlie
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'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
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06-06-2022, 03:47 PM
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#19
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Quote:
Originally Posted by Bad Luck
Since your 4Runner doesn't have an immobilizer there isn't a plug in the 4Runner harness for the immobilizer stuff. (The immobilizer is part of the ECU.) If the Tacoma ECM had an immobilizer then that Tacoma would have had a plug for the ECM immobilizer in the Tacoma vehicle harness. Does that make sense?
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I can upload a photo comparing them in a few mins when I get home to explain it better. But what I’m saying is the 4Runner ECU has pins and plugs in every port on the ECU. The Tacoma ECU has a port that is completely blank.
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06-06-2022, 03:49 PM
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#20
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Quote:
Originally Posted by phattyduck
The research I've done is for removing the immobilizer from an ECU to use it in a non-immobilizer 4Runner.... so not quite the same.
I'd definitely suspect a minor wiring incompatibility, but even then, the Check-Engine light should illuminate with the key in the "ON" position with the engine off.
If you can't find diagrams online, get a 2-day subscription to the Toyota TIS system and download what you need...
-Charlie
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That’s what I’m trying to do: install an immobilizer Taco ECU into a non-immobilizer 4Runner.
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06-07-2022, 01:22 PM
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#21
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Quote:
Originally Posted by Huey.Raine
I can upload a photo comparing them in a few mins when I get home to explain it better. But what I’m saying is the 4Runner ECU has pins and plugs in every port on the ECU. The Tacoma ECU has a port that is completely blank.
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Quote:
Originally Posted by Huey.Raine
That’s what I’m trying to do: install an immobilizer Taco ECU into a non-immobilizer 4Runner.
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The two above statements are incompatible. If the Taco ECU has no pins in the center plug, it is a non-immobilizer ECU. The center plug is what goes to/from all the immobilizer components (key amplifier, security light).
While you are getting pics, take one of the upper dash section where the rear window switch, etc. is on your 4Runner.
-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
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06-07-2022, 04:58 PM
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#22
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Quote:
Originally Posted by Huey.Raine
That’s what I’m trying to do: install an immobilizer Taco ECU into a non-immobilizer 4Runner.
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I dont have anything to add to this discussion, but I am also doing a 5 speed swap and facing a similar issue. I am currently looking for companies who coul re-flash my Immobilizer ECU, or take the Immobilizer chip out of the old ECU and put it it into the 5 speed Ecu.
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06-07-2022, 06:22 PM
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#23
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Quote:
Originally Posted by phattyduck
The two above statements are incompatible. If the Taco ECU has no pins in the center plug, it is a non-immobilizer ECU. The center plug is what goes to/from all the immobilizer components (key amplifier, security light).
While you are getting pics, take one of the upper dash section where the rear window switch, etc. is on your 4Runner.
-Charlie
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I’ll take pics and upload them when I get home from work in about an hour.
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06-07-2022, 07:46 PM
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#24
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Quote:
Originally Posted by phattyduck
The two above statements are incompatible. If the Taco ECU has no pins in the center plug, it is a non-immobilizer ECU. The center plug is what goes to/from all the immobilizer components (key amplifier, security light).
While you are getting pics, take one of the upper dash section where the rear window switch, etc. is on your 4Runner.
-Charlie
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4Runner ECU currently installed
Tacoma ECU
Center console dash area all plugs are used with bezel pictured
Unused plugs behind dash blanks on left side of steering wheel
Side topic;
I upgraded my shift knobs and now need to relocate the 4wd button to the dash. Does anybody make OEM style push buttons that fit the dash blanks? Prefer something that will match the center diff lock and clutch start cancel buttons, if possible.
numbers remove duplicates
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06-07-2022, 08:01 PM
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#25
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Quote:
Originally Posted by Huey.Raine
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Because your 4Runner has that middle harness, that means your 4Runner has an immobilizer.
You have a couple of options:
1 - Find the correct Tacoma ECU with that middle plug, go through all the steps necessary to flash that ECU to get your immobilizer to work with it.
2 - Remove the immobilizer from your ignition and wire it the way a non-immobilizer 4Runner should be wired.
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1999 4Runner Limited - 5VZ, 4wd, Factory E-Locker, Multi-Mode, 5-speed swap, Armored, Icons, 295s ( thread)
2001 Tacoma Xtracab - 3RZ, 4wd, 5-speed (Daily Driver)
Last edited by Team_Jake; 06-07-2022 at 08:03 PM.
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06-07-2022, 08:13 PM
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#26
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Quote:
Originally Posted by Team_Jake
Because your 4Runner has that middle harness, that means your 4Runner has an immobilizer.
You have a couple of options:
1 - Find the correct Tacoma ECU with that middle plug, go through all the steps necessary to flash that ECU to get your immobilizer to work with it.
2 - Remove the immobilizer from your ignition and wire it the way a non-immobilizer 4Runner should be wired.
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That’s odd because when I bought the truck the seller only had a single valet key. I took it to a local locksmith and had another key cut and both work fine. With an immobilizer shouldn’t the key be chipped?
#1 isn’t really an option as I paid $400 for the ECU I have
What is the process for removing the immobilizer on my 4R?
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06-08-2022, 12:27 PM
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#27
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Quote:
Originally Posted by Huey.Raine
That’s odd because when I bought the truck the seller only had a single valet key. I took it to a local locksmith and had another key cut and both work fine. With an immobilizer shouldn’t the key be chipped?
#1 isn’t really an option as I paid $400 for the ECU I have
What is the process for removing the immobilizer on my 4R?
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The wires for that center plug, trace those back, that should be connected to the transponder key amplifier near your ignition (which is basically the brains of your immobilizer system). Remove that and your ignition, replace it all with a standard (non-immobilizer) ignition system. Your local junkyard will likely have the ignition system you need, my guess is any 4Runner/Tacoma non-immobilizer system will work. Study some wiring diagrams, they are going to be your friend here. Now a warning, I have not done this, nor do I know anyone that has done this, theoretically this should work, but you are venturing into uncharted territory so your results may vary.
__________________
1999 4Runner Limited - 5VZ, 4wd, Factory E-Locker, Multi-Mode, 5-speed swap, Armored, Icons, 295s ( thread)
2001 Tacoma Xtracab - 3RZ, 4wd, 5-speed (Daily Driver)
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06-08-2022, 01:05 PM
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#28
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Quote:
Originally Posted by Huey.Raine
That’s odd because when I bought the truck the seller only had a single valet key. I took it to a local locksmith and had another key cut and both work fine. With an immobilizer shouldn’t the key be chipped?
#1 isn’t really an option as I paid $400 for the ECU I have
What is the process for removing the immobilizer on my 4R?
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Valet key meaning all metal? If so, this is an odd one.
Immobilizer equipped valet keys still had the fat plastic body - they were just gray to indicate it wouldn't open up the glove compartment.
-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
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06-08-2022, 01:40 PM
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#29
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Quote:
Originally Posted by Team_Jake
The wires for that center plug, trace those back, that should be connected to the transponder key amplifier near your ignition (which is basically the brains of your immobilizer system). Remove that and your ignition, replace it all with a standard (non-immobilizer) ignition system. Your local junkyard will likely have the ignition system you need, my guess is any 4Runner/Tacoma non-immobilizer system will work. Study some wiring diagrams, they are going to be your friend here. Now a warning, I have not done this, nor do I know anyone that has done this, theoretically this should work, but you are venturing into uncharted territory so your results may vary.
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I'm going to preface this post. I'm not saying you are correct or incorrect. I'm trying to understand your logic because I have only a vague understanding of the immobilizer system, and I'm trying to further my understanding.
Can you explain why the key amplifier needs to be removed if the tacoma ecu doesn't have an immobilizer chip in it? If the tacoma ecu isn't looking for an immobilizer signal from the key amplifier then why would removing it fix the no start? I could understand the inverse situation being a problem where the ecu has an immobilizer, but it isn't receiving anything from a key amplifier because the vehicle doesn't have it.
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06-08-2022, 02:17 PM
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#30
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Quote:
Originally Posted by Bad Luck
I'm going to preface this post. I'm not saying you are correct or incorrect. I'm trying to understand your logic because I have only a vague understanding of the immobilizer system, and I'm trying to further my understanding.
Can you explain why the key amplifier needs to be removed if the tacoma ecu doesn't have an immobilizer chip in it? If the tacoma ecu isn't looking for an immobilizer signal from the key amplifier then why would removing it fix the no start? I could understand the inverse situation being a problem where the ecu has an immobilizer, but it isn't receiving anything from a key amplifier because the vehicle doesn't have it.
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Here is the way an immobilizer ignition system works:
- The key is inserted into the ignition
- The ignition ring coil reads the RFID chip inside the key and sends the value to the transponder key amplifier
- The transponder key amplifier decodes the value and sends that code to the ECU
- The ECU checks those codes against a list of stored codes
- The codes match, the ECU and the transponder key amplifier both tell the EFI relay it is allowed to operate
- The ignition is turned over, the vehicle will start and run normally
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1999 4Runner Limited - 5VZ, 4wd, Factory E-Locker, Multi-Mode, 5-speed swap, Armored, Icons, 295s ( thread)
2001 Tacoma Xtracab - 3RZ, 4wd, 5-speed (Daily Driver)
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