MBA 13 820-3437 sensor error

[MobileXT]

I working on a MacBook Air 13 2014 820-3437 with the following error Thunderbolt Proximity, MLB Top Side, Airport Proximity, Memory Proximity and Trackpad Skin. I almost replaced all the sensors already and still have the same results. I attached a Photo here.

[piernov]

Re: MBA 13 820-3437 sensor error

Check if all the same sensors fail without touchpad plugged in.
If yes, probably an issue on SMC "3" SMBus.
Check resistance across R5390 and R5391.
Check voltage and diode mode to ground on SMBUS_SMC_3_SCL and SMBUS_SMC_3_SDA.

[MobileXT]

Re: MBA 13 820-3437 sensor error

I did unplug the keyboard and trackpad and the rest of the error are disappear except the trackpad Skin. So I concluded that the track pad must be bad. Thanks!

[jimmyspangle]

Re: MBA 13 820-3437 sensor error

Trackpad cable.