IO Terminal custom cable diagram

**tepSIJA** · 13th December, 2020, 01:51 AM

Hello frend.

Please can some provide more detailed diagram for IO Terminal.
I have trouble about making my own cable, so far i use this diagram (my main cable DB9 to OBD)

Screenshot_2.jpg

Can't read MagnetMarelli IAW 59F.E4 HW023 on bench mode, checked pinout , and after i made "main" OBD2 cable i make one more extension like this.

diagram_adapter_ECU_testing_on_bench_premium_tools24.jpg

I am using external 12v supply unit set to 13.0v

Here my conection looks like

Screenshot_4.jpg

also found more similar diagram which confused me.

io_terminal_diagram_standard_adapter.jpg

Also intresting is today i able to read Opel ecu Z13DTH via obd ECU is MJD 602 , with my main cable.
I do not understand my first diagram and last one i am posting.

**venceslau** · 13th December, 2020, 01:54 AM

Do you have 120 ohm terminating resistor across can bus High/Low?

Edit: Nevermind, looks like you're using K-line. Pinout looks good, not sure mate.

Sent from my Redmi Note 7 Pro using Tapatalk

**tepSIJA** · 13th December, 2020, 01:59 AM

Originally Posted by venceslau

Do you have 120 ohm terminating resistor across can bus High/Low?

Edit: Nevermind, looks like you're using K-line. Pinout looks good, not sure mate.

Sent from my Redmi Note 7 Pro using Tapatalk

no i dont use any resistor, only like on diagram

**venceslau** · 13th December, 2020, 02:07 AM

What don't you understand about the last diagram? If you connect the 12v, grounds and K-line it should work. How many amps is ECU drawing?

Sent from my Redmi Note 7 Pro using Tapatalk

**tepSIJA** · 13th December, 2020, 02:11 AM

Originally Posted by venceslau

What don't you understand about the last diagram? If you connect the 12v, grounds and K-line it should work. How many amps is ECU drawing?

Sent from my Redmi Note 7 Pro using Tapatalk

Ecu take about 0.6-0-7A

Dont understand difference between my first and last diagram , it is not same

**venceslau** · 13th December, 2020, 02:44 AM

Originally Posted by tepSIJA

Ecu take about 0.6-0-7A

Dont understand difference between my first and last diagram , it is not same

The diagrams are the same, the first one has additional CAN2 network (pins 3/11) but everything else looks the same.

From the ECU pinout you provided looks like you only need K-line for this ecu so this difference doesn't matter.

Sent from my Redmi Note 7 Pro using Tapatalk

**Lambda1** · 13th December, 2020, 10:49 AM

And if IOT dont read a ecu... dont be worry, I often run into this problem and also developer dont know why dont work xD

**figani** · 13th December, 2020, 11:00 AM

Originally Posted by tepSIJA

Hello frend.

Please can some provide more detailed diagram for IO Terminal.
I have trouble about making my own cable, so far i use this diagram (my main cable DB9 to OBD)

Screenshot_2.jpg

Can't read MagnetMarelli IAW 59F.E4 HW023 on bench mode, checked pinout , and after i made "main" OBD2 cable i make one more extension like this.

diagram_adapter_ECU_testing_on_bench_premium_tools24.jpg

I am using external 12v supply unit set to 13.0v

Here my conection looks like

Screenshot_4.jpg

also found more similar diagram which confused me.

io_terminal_diagram_standard_adapter.jpg

Also intresting is today i able to read Opel ecu Z13DTH via obd ECU is MJD 602 , with my main cable.
I do not understand my first diagram and last one i am posting.

First and Last Diagram almost Same...
only one line add, on last diagram...

Use obd pinout and all good...
and magneti marelli was always specific...
sometimes it works and sometimes not...