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No communication with OBD2 port

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I'm searching for any ideas on resolving an issue with the OBD2 port. It's a 2005 Hiace with the 2KD-FTV engine.

There is power to the port but the generic code reader I have won't communicate. The same code reader worked in a Hyundai and Citroen.

I've been scouring the internet before posting here and tried pulling fuses in turn before attempting to connect but no luck so far.

Is there a way to meter the OBD2 plug to check continuity especially the ecu connecting pin ? I'm having an ABS intermittent warning light but have no way to check what the problem is. 

This is an incredibly reliable van with only minor issues so far. Any ideas more than welcome.



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