Hi Nomake,
Glad the adapter arrived safely.
It does sound like a problem with your serial adapter. I had an email recently from an impreza owner who was having the same problems with a USB-serial converter.
When you turn on the ignition you may get a single zero or garbage byte as the interface powers up, but you should not be picking up an endless stream of zeros.
I have always been able to read the TCU using the 45 command, even on cars where I couldn't read the ECU.
There is no handshaking used in this circuit. If your serial interface requires RTS/CTS handshaking then you could try fooling it by connecting the RTS pin to the CTS pin.
Can you beg, borrow or steal a computer with a standard serial port?
__________________
Subaru ECU and TCU Website
1992 Alcyone SVX Version L
1992 Alcyone SVX Version L
1994 Alcyone SVX S40-II
2004 Subaru Legacy 2.5 SE Sports Tourer
1996 Subaru Legacy 2.2 GX Wagon
1988 Subaru Justy J12 SL-II
|