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The interpreter chip
The ELM323 was specifically
designed as a low-cost solution for
interfacing a PC or PDA to a vehicle
diagnostics connector. To keep things
simple it communicates at a fixed
baud rate of 9600 baud and does not
offer a handshaking option for the
RS232 interface. In addition it is only
able to communicate using the
10.4 kHz ISO 9141 Protocol. This standard
is the most common used by the
majority of European and Asian manufacturers.
Vehicles built in the US
use VPW and PWM protocols and
suitable interpreter chips are also
available from Elm Electronics.
G. Müller
so remaining questions are
1. Are the BMW 6cyl engines compatible with the ELM323 based OBD2 scanners? or which protocol does BMW use?
SAE J1850 PWM
SAE J1850 VPW
ISO 9141-2.(RS-232)
ISO 14230 KWP2000 (Keyword Protocol 2000)
ISO 15765 CAN
??
2. Is Dyno-Scan (xor DigiMoto) compatible with the ELM323 based RS232 scanner cables?
3. (NEW!) are BMW ecu information ISO defined? can I perfom a dynamometrisis with Dyno-Scan to a BMW?
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