Macbook A1502 820-3476 No Keyboard & Trackpad

[sulitunlock]

Hello Jhon here again. I have macbook pro A1502 has no keyboard and trackpad.
Pin 4 =3.4V
Pin 30 =3.3V
PP3V3 _S3_PSOC = 3.3V
If RIO Flex Connected that is the error shown on the screen. Thanks for the help.

br,
sulitunlock

 

[2informaticos]

Check the resistors around U4801.
Be sure BUTTON_DISABLE is 0V.

Ant history available?

 

[sulitunlock]

It was no power due to PPVIN_S0_CPUVR_VIN had corossion I just clean and it power on.

button_disabled is 0v sir
Smc_lid 3.4V
PP3V3_S3_PSOC = Present

 

[2informaticos]

R4801-04 all good?
Post diode mode to ground and voltage at USB_TPAD_P/N lines.

 

[sulitunlock]

USB_TPAD_N = .472 Resistance (0.0V)
USB_TPAD_P = .491 Resistance (3.1V)
TPAD_VBUS_EN= .705 Resistance (3.3V)

 

[2informaticos]

Voltages look good, but diode mode difference a bit high.
Try changing U4801; better to use donor board.