OBD-II UART Adapter - odb.init() keep failing

[jossef]

I recently bought this OBD-II arduino adapter.

I'm troubleshooting with the rpm-led basic example

iv'e defined #define DEBUG Serial and saw these messages in arduino ide serial monitor:

SEARCHING...UNABLE TO CONNECT>[865698]ATZ OBDUART v1.0>[865754]ATE0 
OBDUART v1.0>[865754]ATE0 
ATEOOK)[865807]ATL1
OK>[865860]010C
SEARCHING...UNABLE TO CONNECT>[872586]ATZ OBDUART v1.0>[872641]ATE0 
OBDUART v1.0>[872641]ATE0 
ATEOOK)(872694]ATL1
OK)(872748]010C
SEARCHING...UNABLE TO CONNECT>[879473]ATZ OBDUART v1.0>[879528]ATE0 
OBDUART v1.0>[879528]ATE0 
ATEOOK)(879582]ATL1
OK)(879635]010C
SEARCHING...UNABLE TO CONNECT>[886362]ATZ OBDUART v1.0>[886417]ATE0 

i debugged the code, and odb.init() keep failing. @stanleyhuangyc Any suggestions?

---

this is how i connected the OBD-II adapter

tested on Arduino Leonardo,
My car - Volkswagen Polo 1998

[stanleyhuangyc]

1998 Polo is not supported

[conors891]

is 2000 mk2 punto supported?