I gathered a lot of information from all kind of sources and I think I'm pretty close, but still doing something wrong since I always receive "NO DATA".
I hope somebody here can put me to the right direction. This is my script:
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#!/usr/bin/expect telnet 192.168.0.10 35000 # Reset scanner send "ATZ\r" expect "ELM327 v1.3a" # Add line feed (enter) send "ATL1\r" expect "OK" # Protocol selection (I tried different protocols here, not sure which one I should use) #HS CAN (ISO 15765, 11-bit Tx, 500kbps, DLC=8) send "STP33\r" expect "OK" # Turn headers on send "ATH1\r" expect "OK" # I have a list of Control Module Id's, this is an example for "Air Suspension Control Module (RequestId: 245 ResponseId: 545)" # Set the header send "ATSH 245\r" expect "OK" # Set the response id filter # As each message is received, the incoming CAN ID bits are compared to the CAN Filter bits (when the mask bit is a ‘1’, 7FF = 11111111111). send "ATCM 7FF\r" expect "OK" send "ATCF 545\r" expect "OK" # Ask for trouble codes send "A981DA\r" expect "NO DATA" #<-- It always gives me this, even if I have a error code in the car display