How to read VOLVO FH500 TRW EMS 2.3 ECU?

**minimex** · 29th March, 2019, 09:32 PM

Hi,
does anyone know how to connect jtag wires to this connector in EMS2.3.

**kubuswujo** · 29th March, 2019, 10:20 PM

write support they will send you a connection.
I wrote and get file but cannot open it
Its .mht format.

If someone will open it then please paste here a screenshot

**janiis88** · 30th March, 2019, 10:07 AM

AS far i know, there is possible to read and write using Ktag Ori, but checksums are not calculated so file is useless. Has anyone know any other tools that could read and write ems 2.3 sucsessfully?

**kubuswujo** · 30th March, 2019, 03:13 PM

Yes this is true. I have Ktag ori and support told me that i can read write but cannot calculate checksum.
Can someone else write to support for connection beacuse they send me only file that i atached on post before but for me there is no connection picture in file

**d818651** · 10th May, 2019, 10:46 AM

Is there any news on EMS 2.3? I understand correctly that a ktag can read-write a dump, but there is no calculation of the checksum of the dump and there is no possibility to make changes?

**kubuswujo** · 10th May, 2019, 12:14 PM

Yes, exactly that what you tell.
No possibility to calculate cheksum= no posibility to make changes.

**d818651** · 20th May, 2019, 11:10 AM

Can I read the memory from one EMS 2.3 (is it new, works well) and write it to another new ECU EMS 2.3? Any protection for the serial number or processor ID is present?

**Apsik** · 23rd May, 2019, 12:19 AM

There is no possibility to clone this ECU - just checked with Dimsport

Since 21.05.2019 New Trasdata supports reading/writing EMS2.3 but not checksum

**tl22bq** · 23rd May, 2019, 11:18 PM

Originally Posted by kubuswujo

Yes, exactly that what you tell.
No possibility to calculate cheksum= no posibility to make changes.

Ols805 since v2.21 (2018-07-30)there is test checksum have not tested it

Some on have done adblue off TRW EMS 2.3 adblue off
https://r.tapatalk.com/shareLink?sha...7&share_type=t

Skickat från min iPhone med Tapatalk

**nomorenoless** · 9th March, 2021, 03:57 AM

Can you please show me the KTAG pingout?

**alclot** · 9th March, 2021, 09:23 AM

Hi mates,
Can anyone help up with full pinout of this ecu please?
Thanks a lot

**maicsonecutune** · 13th March, 2021, 08:55 PM

Hi To all,

Volvo TRW EMS 2.3 and 2.4 availble to Read/Write by Trasdata you need special cable if you dont want to open the ECU.
for ACM reading you need to open the ACM unit.

I read and write the Ecu/ACM now for a Time already and able to Remove SCR- adblue and DPF

so now you know.

all other tools cannot Read or Write that ECU/ACM for now

regards

**EnCoders** · 14th March, 2021, 08:58 AM

Dimsport Can write EMS2.3 will all necessary maps and flags for any DPF / EGR / SCR off.
Newer 2.4 main maps can be reflashed with chk too, but DTC still doesn't covered well and just can be emulated.

**JESSE** · 16th March, 2021, 12:49 AM

thank you for this file, please pass

**alclot** · 16th March, 2021, 07:44 AM

Hi mate,
Which cable do you use to read without open it?
About emulators which one fit ok on it?
and please share the password.
Thanks a lot

Originally Posted by maicsonecutune

Hi To all,

Volvo TRW EMS 2.3 and 2.4 availble to Read/Write by Trasdata you need special cable if you dont want to open the ECU.
for ACM reading you need to open the ACM unit.

I read and write the Ecu/ACM now for a Time already and able to Remove SCR- adblue and DPF

so now you know.

all other tools cannot Read or Write that ECU/ACM for now

regards