Cannot complete replacement brake booster air bleed procedure

Ive tried everything to get the air bleed procedure to complete but it is not working.
I replaced the master cylinder and abs accumulator a few months ago and have not been able to do the bleed procedure.
I bought a 50 amp charger, im reading 14 volts when i try to start the procedure and its still not working.
I got the vxdiag cable. I was trying to use it with techstream 18, Ive now signed up for the toyota two day subscription ands its still not working
I also have a code for steering angle sensor. I replaced the clock spring with steering angle sensor twice with used oem ones from ebay and steering angle sesnor is still not reading, it always reads 850.5.
I checked the voltage and resistance checks for the l51 connector that is said to do in the manual, its still not working. Ive attached the DTC's im getting.
Im so desperate to get this to work, ill do anything, somebody please help.

 

New. I've verified it was the correct part number.

 

I've tried multiple cables. Nex IQ USB link 3 ($800 adapter for heavy duty diesel) , the vxdiag vcx nano, i tried using my friends scan tool, with all of them i immediately get and "air bleeding failed" message when i try to start the procedure. Ive verified that the parking brake switch is showing on, brake pedal switch showing off, etc. I do notice that some of the accelation/deceleration sesnors are displaying a non zero value when the car is stopped and i'm trying to do the procedure? could this be causing it to fail?

Also i should note that a few months back i had blown the 125a fusible link and bypassed it.. Not sure if that would have any impact because i am reading 14 volts in tech stream not in ready mode when i have the charger connnected.

Abs Data by George Jung posted Nov 2, 2025 at 11:52 AM

 

I've tried everything that's been suggested in previous threads, amd the manual, short of replacing the ABS actuator again, as i just put a brand new one in there a few months ago. I spent the $80 for the two day license and used the official Toyota TIS software or whatever its called now. Ive spent hundreds of dollars on multiple cables and dongles that were said to work by people on here. VXDiag, mongoose, high dollar scanners, etc. I recently bought the TopScan Bluetooth dongle that a person on youtube posted a video using to complete the bleed procedure. This time it actually allowed me to go through the steps, but i didnt hear the pump running at all. Well I would herar it turn on for a split second and stop as I pressed next on each step. I was just getting one burst of brake fluid.
The pump also performs the same way when i activate one of the ABS relays on the utility menu on Techstream. I Hear it for a split second then it turns off.

Is there anyway i can do any troubleshooting to verify that a new ABS accumulator will actually fix the problem, because i doubt it. Could it possibly be a bad ECU or something, even though the CANBUS check isn't showing any issues?
Please somebody help, ill pay for a virtual consultation if they can walk me through troubleshooting my ecu and whatnot with a multimeter.