Hello yall just wanted to post here and ask around to see what the fellas thought about my issue. I will post as much info as possible on all that ive done. This is a 2001 GS430, has 172k and completely stock. I bought it last year with knock sensor codes P0325 & P0330. I decided at the time to give it a go with the cheap rock auto knock sensors ($40) as oppose to the oem $280 per bank sensors. This solved the CEL issues for a while, eventually like 2-3k miles later code came back but only p0330 bank #2.
So at this point i decide hey i dont wanna keep removing the intake, so when im in there i decide i think i can just relocate the knock sensors. So i rewire the knock sensors and relocate them in the back on the engine area.
so when i re test everything now im getting both codes p0330 and p0325. Before was just p0330.
i test the circuit continuity and its good.
per toyota, they advice to replace the ecm if sensors and circuits are good. I tested both sensors and a new one i bought and they were good. wired new circuits from sensors to ecm to be super sure. But cel comes on always after i clear it.
so im like welp i guess thats where we are.
problem is the ecu has immo.
So i read you can bypass immobilizer and align it. So i followed the procedure (jump pins 4 & 13 OBDII connector wait 30 min with the key on etc)
but no luck. Ecm immo will not let the car start
i tried the procedure several times with master key but no luck. Car starts right up with old ecm so im like grrrrrr.

so now car runs with old ecm but still has the cel come on after you clear it. But cannot figure out how to bypass the immo to test a new ecm and see if this solves the knock sensor issues.
ill post some pics of what i have to see if anyone has encountered this or if they know why ecm immo will not align.
per toyota, ecm connector E3 circuit pins 1 and 2 are the knock sensors, and circuit 32 is ENKL (not sure what that does)
please share if you can i am desperate!
please and thank you
Jrod

 

The last image says it all, you can't fool the ECU it looks for a legit signal coming from the knock sensor, doesn't matter if the engine is knocking or not. Only way to solve this is use OEM sensors in their proper locations.

 

You should open up your original ECU, and inspect the capacitors for signs of leakage. And just go ahead and replace all the capacitors and if some are leaking, maybe there isn’t permanent damage yet, and cleaning up the reside while replacing them, and then see if your original ecu still had the knock sensor problems? It’s not difficult to service the ecu, or have company like Phoenix do it for u. They can also alter the tune, raise the redline, delete the immobilizer, all kinds of fun to be had.