OBD2 power button no communication

9325 Views 12 Replies 4 Participants Last post by Dennie, May 30, 2018

Dennie

Discussion Starter · May 27, 2018

Hi Huys, I recently bought a 2015 Hyundai Sonata 1.6 gdi.
When I connect the obd to the reader (Creader vii+), it gets power from the connector but there is no communication possible. I have tried the Creader vii+ on my Mazda as well and that works.

What can i do to solve this communication problem?

Attached is a photo of the obd connector, top left is pin 16 and bottom right is pin 1.

I hope you can help me!

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1 - 13 of 13 Posts

Red Raspberry

· #2 · May 27, 2018 (Edited)

Make sure there is power at the connector. May be a blown fuse.

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Dennie

Discussion Starter · #3 · May 27, 2018

I have power (Creader turns on when I connect to obd) but no communication

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camper

· #4 · May 27, 2018

You need to plug in OBD2 when ignition is off, then turn the key to on but don't start the engine. If OBD is still not working, clean the ECU negative terminal, which is ground wires tighten on the engine or car body

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AUTOSPARK

· #5 · May 27, 2018

camper said:
If OBD is still not working, clean the ECU negative terminal, which is ground wires tighten on the engine or car body

Yeah, that's the magic cure for all electrical issues :laugh:

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Dennie

Discussion Starter · #6 · May 27, 2018

Ground negatieve seems to be ok, no corrosion and I have tightened them. Still no communication though.
There is power because the device turns on when i plug it info the obd, ignition is on andere the vehicle is obd compliant.

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AUTOSPARK

· #7 · May 27, 2018

Are you connecting the scan tool to diagnose a problem? If so, could the problem your trying to diagnose be related to the failure of the communication bus?

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Dennie

Discussion Starter · #8 · May 27, 2018

No there is no specific problem to diagnose, the only reason for me to connect is because the dealer tried to connect to obd and they said they could not communicate. So now I am trying to find out how to solve this.

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Red Raspberry

· #9 · May 27, 2018

There should be +12v on 4, 12 and 15 with the key on engine off. 1 and 5 should be the grounds to check the voltage against.

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AUTOSPARK

· #10 · May 28, 2018

Dennie said:
dealer tried to connect to obd and they said they could not communicate.

Was the dealer tool able to communicate with any of the other vehicle systems?

Sounds to me like there might be a problem with the CAN link to the OBD connector, so you might want to measure the voltages on the CAN terminals of the connector. That'll be terminals 6 & 14.

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Dennie

Discussion Starter · #11 · May 28, 2018

Thanks. @Red Raspberry: I will check pins 4, 12 and 15 again 1 and 5 and report back on this. @AUTOSPARK: pins 6 and 14 are empty on the obd connector.

Should pins 6 and 14 have cables on a 2015 Hyundai Sonata? The obd connector looks not tampered with.

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