2020 4RUNNER

[alexs600]

Found and read RH86 read and write as 93c86X16 in cir 3.3 V
RH86 -on board marked as "U1"

CHIPS ON BOARD
MB91F5758HS
MB91F594BHS

Thanks

[clusters]

Probably in Spansion processor like the Camry etc.

[alexs600]

with rh86 removed
massage showed up
"maintenance required"

odo -not shows anything
trip a -0
trip b -0

[clusters]

Well, obviously some data stored in the eeprom, just not what you need.

[dllas]

Friend,

99% percent sure is yazaki algo same as older 4 runner. eep only

[alexs600]

first time reading was incorrect.
I removed bad file-and posted good working file in beginning of tread
To remove rear cover need remove front bezel, rpm needle,and screws
read and write 3.3v in circuit -ok
maintenance in line $1C0

Thanks

[alexs600]

UPA-S CONNECTION