Ventilation does not seem to be working?

There are a couple of things that can be causing this, but we need to start with the basics which are covered in this guide. So, let's run through this and see what turns up.

https://www.2carpros.com/articles/low-or-no-air-flow-from-vents

However, the most likely cause of this is the blower motor is not working either due to a power issue or the motor itself.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

I am attaching the wiring diagram below that will help with this checking for power but here is a guide that will help with the testing.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Basically, we need to check power at the blower motor and then go through the system until we find power. Keep in mind this is ground side controlled so you are looking for 12 volts at the motor and then a good ground.

Let me know what questions you have.

Thanks