I bought Techstream v18 with MVCI cable off eBay and wanted to share my (rather limited) success.
I am able to connect by selecting 0205-0401 (May 2002 to Jan 2001). It reads DTCs and live data* from only 3 ECUs: Engine, ABS and Immobilizer. This in itself is not surprising for a 20 year old car where there is no CAN bus. I think diagnostics for anything other than emissions related ECUs was in its infancy.
*Even with the Engine ECU, I can read data but only one snapshot. After a few seconds I get a dialogue saying lost communication with vehicle with error code 0xA1050308:
The error logs don't really give much detail.
1) Has anybody encountered this "Lost comms with vehicle" for any Alphard MY? Have you solved it please?
2) Has anybody with an 2002/2003 2.4L vehicle been able to communicate with ECUs other than the ones listed above?
Thank you very much.