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Hi Im David, what do you mean it doesnt have an immobilizer? was it bypassed?
Hate to tell ya bud, but it may not have a separate transponder but it has anti theft
Alarm Module: Testing and Inspection
TERMINALS OF ECM
CHECK TRANSPONDER AMPLIFIER
Terminals Of ECU
a. Disconnect the T5 amplifier connector, and measure the resistance between the terminal of the wire harness side connector and body ground.
Standard:If the result is not as specified, there may be a malfunction on the wire harness side.
b. Reconnect the T5 amplifier connector, and measure the resistance or voltage of each terminal of the connector.
Standard:If the result is not as specified, the amplifier may have a malfunction
does it have a security light?
does it at least crank?
you getting rpms during cranking?
then you either got damaged wiring or a blown fuse.
the spark control comes from the computer. the injector pulse comes from the computer. the computer and or wiring is at fault here. period
good luck. i believe we have come to an impasse. i will opt out and let another tech give it a go.
Hello and welcome to just answer. I cannot see or hear your vehicle and rely on your input to my questions so I can help you better.I read your problem and conversation with the previous tech. The code your experiencing is for an immobilize. The ECU will not pull that code unless there is one in the system so to cut the chase you should find the module behind the glove box on a cross member and wiring in the right kick panel then after you establish that you can proceed to diagnose the issue.
When is the code detected?- Error in communication between ECM and transponder key ECU assy, and in communication line- Communication ID is different during communication with transponder key ECU
Possible causes- Faulty Key- Faulty transponder key amplifier- Faulty transponder key ECU assembly- transponder key amplifier wire harness
you still needing help?
I read your notes and replies ,this certainly is strange that the ECU is RECOGNIZING AN IMOBLIZER AND YOU CLAIM THERE ISN'T ONE./the SIMPLEST WAY TO SOLVE THAT IS TO RECORD THE VEHICLES VIN NUMBER AND ALSO THE PART NUMBER ON THE ecu THEN CALL OR GO TO A Toyota DEALER AND THEY CAN CROSS REFERENCE THOSE NUMBERS TO TELL YOU WHAT SHOULD BE IN THERE. then WE CAN CARRY ON, does THAT SOUND LOGICAL? i AM A Toyota MASTER TECH AND SOMETIMES THAT'S WHAT WE HAVE TO DO WHEN REPLACING ecu'S BECAUSE OF SO MANY VARIABLES.
i BELIEVE THE SENSORS ARE WORKING OR YOU WOULD HAVE NO SPARK NOT A WEAK ONE , IF ALL IS OK WITH THE ECU THEN i WOULD SUSPECT THE IGNITER. But check that Ecu for comparability first.
If it is infact reading that code it won't start so we need to determine about that Ecu . What does the key look like?
Probably the reason you think it doesn't have an immobilize is because it is interrogated in the ECU, It may be as simple as the key you have is not programed into the ecu. Do you have the equipment to program it?
did you actually try to contact Toyota with those numbers I mentioned to verify that as that ECU will not have the capabilities to spit out that code if it was not in the program plain and simple I'm not escalating this for more money just would like to help you solve this.Just answer me why you insists this does not have an immobilizer when the ECU recognizes one?
There is no separate ECU or modual fo it it is built into that ECU
Then they obviously gave you the wrong one or they screwed up. if in fact the key has a transponder in it thick black piece and the ECU is spitting out thast code you either have the wrong ECU or key not programed. If you had an ECU for a vehicle without that system it does not have that internal programming, I have never seen that in my 45 years . I will give you a video how to bypass it , the video is for another Toyota but should work on yours give it a try.I don't wish to question you or argue with you as these things can be dam frustrating but again it can't have that code in it's system if it does not have that system in it. https://www.youtube.com/watch?v=fJ_pflu4eBg
Yes that is strange , but again if the original gave the same code as the replacement it must have a mobilizer in it and What I would do is to try a new key and program it. Also if you have a scanner that can customize it will or should show the amount of keys registered in the system.and just perhaps that's all you need is to program a key.because as long as it has that code it will not start .
It must comunicate or you wouldn't be able to retrieve that code. Do you have a scanner that has customize feature on it?
If your vehicle does not have that security light then it don't have an immobilizer and they gave you the wrong ECU, but if it does then you do have an immobilizer in the ECU and if you don't have the master key you cannot program it , I found a video that may help .https://www.youtube.com/watch?v=XOp1OaBc58w
then your vehicle does not have an immobilizer and they gave you the wrong ECU because it's trying to communicate with a system that don't exist and that's why it won't start. Question why do you have this vehicle? what happened that it came to your shop. and does it have any history before you got it?
Well that's new to me then I would try another igniter as it will also hinder the intensity of the spark ,but I'm at a loss why that ECU would pick a code when it's not in that system. I'm going to opt out and see if another has ever run into this before as in my years since 77 with Toyota I have never. Good luck my friend and hope you find your problem.
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You have not rated which tells me you are not happy or need more help.
Let me help some more. Is there anything else I can help you with?