I am not knowledgeable on Canadian code, but I would be very surprised if there were not a trap required on any attachment to the sewer system.
I know that Florida code does not allow a laundry to drain onto the ground, it must drain to the sewer/septic, but it is done sometimes.
You could tie a weight firmly to a string and lower it down the pipe until it reaches bottom. If it comes back out wet, you probably have a trap on it.
Lake County, Florida plumber
Springtime Plumbing Services