T42 Bench Flash Tool - 120 ohm Termination

[NISANDA]

i can read t42 with out the e38 ECM they just dont show any vin number or vehicle info etc, but the file its readeble and writteable.

[dave w]

i can read t42 with out the e38 ECM they just dont show any vin number or vehicle info etc, but the file its readeble and writteable.

That good to know.

Would you be willing to share the wiring diagram of your T42 bench tool?

dave w

[NISANDA]

That good to know.

Would you be willing to share the wiring diagram of your T42 bench tool?

dave w

Yes, the pins are:
Pin 31 - Ign Voltage (Switch)
Pin 32 - Battery Voltage (Constant)
Pin 49 - Ground (Big Black-white wire)
Pin 37 - CAN -
Pin 38 - CAN +

Works very good read all v8,v6 and 4 cil ecotec transmisions no problem.
And it does read with Vin and vehicle info with tunercats.

[dave w]

Thanks for the information

I ended up wiring like the EFI Live Tutorial, including to the ECM. See Pic below.

dave w

T42 Bench Flash.JPG

[In-Tech]

Semi subject and a bit off topic. Do any of you know where to buy connectors and terminals for e38, e67 and t42 at a reasonable price? I haven't set up bench programmers for any of the above and would like to. Thanks,
-Carl

[In-Tech]

https://www.speartech.com/Benchtop_P...ess_s/1824.htm
https://obd2allinone.com/products/m5con.asp

These are a couple places I have found and I just can't see spending that much money since I know the connectors/terminals can't be that expensive. I have no problem with people making a nice product and making some money, it's just a tough gig when I can do it myself.

[dave w]

Semi subject and a bit off topic. Do any of you know where to buy connectors and terminals for e38, e67 and t42 at a reasonable price? I haven't set up bench programmers for any of the above and would like to. Thanks,
-Carl

If you already have the Molex part #'s Mouser has them: https://www.mouser.com/

dave w

[In-Tech]

Hi Dave,
Thanks for the reply. I'll research the molex part numbers. I was hoping someone had a cheat sheet already. I haven't used my power and signal account(or whatever they are called now) in a while. Thanks for the mouser tip. I have found in the past that some of the suppliers like them are sometimes cheaper due to the volume they buy.

edit, I'll know better which connectors I need when I learn the pinouts needed for bench programming. Do you have the molex part number for the t42 connector and terminals and if the terminals are all the same for the connectors for the e67, e38 and e40?
Thanks again,
-Carl

[NISANDA]

Thanks for the information

I ended up wiring like the EFI Live Tutorial, including to the ECM. See Pic below.

dave w

T42 Bench Flash.JPG

Yes pretty much the same 

[dave w]

Yes pretty much the same 

Pin 11 (Ignition Switched) is listed on the EFI Live Tutorial.

dave w