Bench testing an MS3 CPU

[mattmon]

How can I power up the MS3 CPU without plugging it into a mainboard?

I want to do some custom gauge development with CAN but don't have a spare mainboard available for testing.

I do have a bench supply and a crank/cam simulator.

Already tried the following on the 40 Pin connector:
5V on pins 1, 20 & 31
GND on 2, 19, 32

But Tunerstudio won't talk to the MS3.

What am I doing wrong?

[Matt Cramer]

That should work - does it have firmware loaded?

[mattmon]

It's a brand new module, So no firmware loaded AFAIK.

I tried enabling the bootloader jumper, but to the same effect (no response from MS3 via TS).

Neither using the built in USB, nor attaching to the UART pins directly achieves a response.

I've even tried powering it from the USB bus on my laptop - but still no go

Maybe I have a bad MS3?

[Reverant]

You are not supposed to be able to communicate with it if it hasn't got any firmware loaded - download the latest stable firmware and load a firmware in the processor.

[mattmon]

Right, but I get no response even after setting the bootloader jumper and trying to connect via tunerstudio.

[jsmcortina]

Right, but I get no response even after setting the bootloader jumper and trying to connect via tunerstudio.

Please do as Dimitris suggests.

James

[mattmon]

Guys... it's not possible to load the firmware if the MS3 CPU can't be detected by either TunerStudio or the CLI firmware tool.

Power is being supplied on a breadboard via the pins listed in my first post, the only other connection is USB to my PC.

I have tried both with and without the bootloader jumper set - In both cases my PC sees the FTDI chip, but the firmware loader will not detect an MS3.

My unit must be DOA, I'll look into getting a replacement.

[jsmcortina]

Your previous posts were not clear.

James