I have a 1997 Subaru Impreza Brighton (EJ18) and I have swapped in an EJ25D w/ matching ECU from a '98 Impreza 2.5RS.
I have tried searching high and low for information, but the only responses I get are "It can not be done."
I have tried many different software programs, and only one has shown any kind of results. It is a generic OBD-II program, and it will connect and allow me to read/clear DTCs as well as show me RPM, coolant temp, throttle %, ect. But only for a short period of time before it disconnects itself.
I am using a Vag-Com cable that I purchased from eBay, and I am beginning to think that may be why I am having such a hard time connecting. Like I said, I can get the very basic generic stuff, but I cannot get into the SSM at all.
I ran a program called VCDS-Lite, and here is what it told me:
VCDS-Lite Obd-II Compatibilty Test
Test Status: Test Complete
Result: Protocol Keyword: $0808
ISO9142-2 OBD-II Software
OBD-2 Software Should Work
VCDS -Lite: Port Test
Interface: Found!
Type: Serial Pass-Through
Opto/Iso: No
Ross-Tech Design: No
Latency Test: Poor
1.8 11.1 27.0 (ms)
I believe it is a JECS ECU... Any information or guidance is GREATLY appreciated!