Connecting I2C devices

Hi. I wanted to connect a current sensor to my Radxa using pins 2 and 5. I enabled I2C3-M0 overlay via rsetup and rebooted. But I get timeout errors when I use i2cdetect to report connected devices.

I also notice that the pins 2 & 3 are both low. Apparently they should be high to work on I2C.

Have I missed something?

Thank you