How can I Test the CAM_I2C SDA and CAM_I2C SCL data bus?

Now I use a imx274 sensor for Jetson TX1,I can not find the imx274 iic is get some command from the TX1 send.

How can I Test the CAM_I2C SDA and CAM_I2C SCL data bus?

Which carrier card/adapter are you using? If you are using Leopard Imaging carrier card or adapter, you can get driver/support from them.

We have used Leopard Imaging IMX274s for TX1s and TX2s.

Leopard Imaging IMX274s use 1.8V for I2C, you should be able to probe those signals if you ask them for schematics.