TOYOTA RAV4 B2796 DTC

[sogaro]

I HAVE A 2001 TOYOTA RAV4, IN MY SHOP, BUT CAR WON'T RUN ANYMORE, ENGINE CRANK BUT WON'T RUN I CHECK WITH MY SCAN TOOL AND I GET- DTC B2796 "NO COMMUNICATION WITH im*oBILIZER MODULE",BUT THIS CAR HAS NO im*oBILIZER RING AS I CHECKED THE IGNITION KEYLOCK TO CONFIRM THIS, ALSO I CHECKED THE KEY WITH KEYREADER AND IT SHOWED NO TRANSPONDER PRESENCE, I TRIED WITH ANOTHER COMPUTER AND I GET SAME DTC B2796. WHAT DO I DO?
ECM: 89661-42661; 1AZ-FE, 4X4AT.......ORIGINAL ECU

ECM: 89661-42820; 1AZ-FE, 4X4 AT
.....USED ECU

[cjawahir]

this is strange ,but i had the same problem , with rav 4 .

it all began with a fuel guage problem , and checking the fuse in the front , after car wont start .

i scan and get the same fault , i dont know what the owner did , i told him it an immo fault .


cj

[shitad]

Inside the engine room fuse box there is a fuse that is NOT to be in. Recheck all the fuses inside this box and remove the one that should not be there, usually that position has no name . I am 100% sure this is your problem. I cannot exactly remember the fuse position but I have done this atleast 5 times before.

[cjawahir]

thanks for posting that info , i think that might me the problem .

can you check for me on another vehicle ?


its just after checking the fuse and then try to restart , the vehicle cant start .

cj

[sogaro]

Inside the engine room fuse box there is a fuse that is NOT to be in. Recheck all the fuses inside this box and remove the one that should not be there, usually that position has no name . I am 100% sure this is your problem. I cannot exactly remember the fuse position but I have done this atleast 5 times before.

I guess you might be right because a guy asked me to send the fusebox for fixing, meanwhile i send you pix of fusebox maybe you may get the right fuse out for me

Got this somewhere:Immobilizer amplifier is in the steering column next to ignition switch it has five wires going to it. The transponder coil is around the ignition lock cylinder assembly on the steering column. If this code is being set in the computer system has to be there. There is one other option that you can try locate in the OBD2 two connector terminal TC and CG. Connect a jumper wire across these two terminals of the OBD2 connector. Leave the jumper wire installed for 30 minutes make sure they have a trickle charger on the battery so the battery does not go dead. In some cases this will force the communication link to reestablish between immobilizer amplifier and engine control computer. It is possible that this link got disrupted. If the chip in the key has gotten damaged or is bad it will also set this code. There's not much more I can give you on this let me know what you find.

[cjawahir]

sargo what happen to your vehicle happen to me also , same transponder missing , transponder amp missing but vehicle was working perfect before , until some tech check the fuse box , the car get the fault like yours ,

could it be the fuse above the hazard fuse that mark "cut ."



cj

[sogaro]

@Cjawahir, I really don't know. i have a guy coming to check it out on Tuesday, hoping he fixes it though he insists its the fusebox that he's going to work on. I have two files i may send to you if you know much about immo files, i think one might be immo off for this car

[sogaro]

sargo what happen to your vehicle happen to me also , same transponder missing , transponder amp missing but vehicle was working perfect before , until some tech check the fuse box , the car get the fault like yours ,

could it be the fuse above the hazard fuse that mark "cut ."



cj

Its the one written Short pin and circled in the pix. i removed the fuse and it worked

[cjawahir]

Its the one written Short pin and circled in the pix. i removed the fuse and it worked

A big thanks to YOU SAGARO and SHITAD no way in the world I could of solve this one .



cj

[teuton]

Hello Sogaro and cjawaihr,

one question. So this fuse original was in its place when th fault occured or someone put it in and the car wouldn't start anymore?
Thank you!

[cjawahir]

some one put the fuse in and that cause the problem .

that position dont have any fuse .

cj

[kojoantwi]

can anybody help me with 2008 TOYOTA RAV4 FACTORY SERVICE REPAIR MANUAL

[hallo222]

hi everybody
also i have same problem my raw 4 2000 won't start today i put my scanner then fault comeing immo no comunication pleas help me i check all there is no immo amplifire thee is 5 pin socket n no ampliire n then i talk to toyota dealer they telling me raw 4 dont have immobiliser so please help me ... thanks all..

[sogaro]

Your are lucky , there exists a solution on this. just start from the first post all the way down and your car will work, after trying all here lets know the state

[hani]

hi everybody
also i have same problem my raw 4 2000 won't start today i put my scanner then fault comeing immo no comunication pleas help me i check all there is no immo amplifire thee is 5 pin socket n no ampliire n then i talk to toyota dealer they telling me raw 4 dont have immobiliser so please help me ... thanks all..

Hi..your immo inside ecu ,it is 93CXX. Read it send me the dump.