VCUBoy714

Hi,

I recently posted another thread about ECU/ECM replacement - turns out that wasn't the issue as I bought another ECM and swapped out but my light issue persisted.
Here's what i have:
One morning the following occurred all at once:

Keyless Entry stopped working
ABS Light came on - stayed on
BRAKE light came on - stayed on
TPMS Light on - BUT FLASHING
DOOR AJAR (Security System) LIGHT came on - stayed on (with all doors closed)

Did a little searching online, beginning to find out a fuse/relay could be bad? Anyone know a common link between these? I was thinking maybe the ALT 120A fuse? I saw someone with a similar issue say "ignition fuse" but not sure if that was the tech name.

The big issue here is the DOOR AJAR light. This light stays on and my car sits unused as I work for the military so I'm away from home for extended periods of time. Battery drains and then it needs a jump.

Toyota dealership said the ECM was bad. Well, I got a new ECM on my own and swapped, reprogrammed, and the issue persisted

Also - i was able to pull ECU-B fuse and DCC 30 fuse - this turns of the door ajar light while the car is off. Turning on without the fuse there, the light comes on. I find it interesting that this reacts to the door ajar

Anyone know of a common electrical link between those lights.

Really trying to save this car.

Thanks

Basebllstar

I'd locate a copy of the car's electrical schematics and trace it out yourself.

Definitely sounds like a handful. Depending on your tC year (2006), Brake/ABS/TPMS are all connected through wheel speed sensors.

Good luck.

62Fender

Sorry for the late response.

Here's a copy of the wiring diagram. Unfortunately, your trouble spots do not share one common fusible link. If you have a multimeter, try checking each circuit for continuity and voltage. Along the way you might want to disconnect, then reconnect any relevant cable plugs.