RomRaider

I am attempting to pull a dump from a TCM. the processor is a R5F72549RBG or according to renesas, it's an SH7254R (i think). TCM is not in the car, it's on my bench. I have a tactrix cable, i've wired up the TCM with power based on the pin outs defined in the schematics and I have power going to the taxtrix cable as well.

The issue is I'm using PCMFlash to try to read from the TCU, but so far nothing i try has worked. I've tried to identify with no success on multiple ecu types. I'm not sure if it's a wiring issue, a communication issue or PCMFlash not supporting it.

There are 4 pins on the TCM, 2 for CCP-CAN and 2 for C-CAN. I don't see any other pins for communication. I've tried connecting the CAN pins on the taxtrix cable to both sets of pins on the TCM, I've also tried connecting the LS-CAN pins on the tactrix cable (based on a GM pin out) to each pair and I was considering trying PWM but decided to ask here for some guidance on what to try.

I am not sure if this TCM needs to be put in boot mode first, but from my understanding, the ECU used with this vehicle does not.

Clearly to obvious, simplest approach has not worked. Looking for ideas on what to try or what to look into next.

SH7254R has AUD interface that may or may not be locked within the flash.