I've bought the fullversion of AlfaDiag and installed it properly, also bought a OBD-usb cable kit called "OBD-Diag 4000 11x functions" and installed it on my laptop. Changed the COM port to 1 in the device manager and in AlfaDiag its set to COM port 1.
When I try to connect I get the following message:
Unable to connect to the ECU.
1. The connection to the Diagnostic connector.
2. The Key is in the MAR position.
(I believe I've set the key right might be wrong, whats MAR short for?)
I've chosen Bosch Motronic M1.5.5 as the ECU I want to connect to.
When I connect the OBD kit onto the connector it lits first red and then green and unlits. If I try to run the software shipped with the kit and I select COM1, the LED on the OBD kit flashes in red and green tho it stops and message about failed to connect to the ECU appears.
With the AlfaDiag software the OBD kit do not lit at all during the handshake.
Gonna have a look on the FAQ on AlfaDiag Alfa Romeo Diagnostic Software
aswell have anyone of you guys experienced this?
Hmm think I'll need to buy a Serial PCcard and a strict RS232(serial) connected OBD cable according to this:
Q. The requirements say one free RS232 serial port is needed, and that a USB to serial connector wont work, Why is this?
A. The USB to RS232 interface adaptors use their own drivers and custom ASICS which do not support the baud rates required by the cars ECU. A PC Card/PCMCIA card interface will work as they contain a real serial port IC that maps to physical ports addresses. The USB to J1962 diagnostic cables do not suffer from this limitation as they provide a fully compatible 8250/16450 UART, which the software can alter the baudrate configuration.
Of to town again