What is the reason for the lack of airflow from the rear air conditioning in the Corolla?

[EmmettMarie]

Possible reasons include a clogged air filter or a damaged blower. Below is relevant information: 1. Space: The Corolla has also been lengthened in terms of body size, with its wheelbase reaching 2700mm after the extension. In terms of seating space, a tester who is 177cm tall has a headroom of one fist when the front seat is adjusted to the lowest position. When the tester moves to the rear, the headroom is 2 fingers and the legroom is 1 fist and 3 fingers. The floor bulge in the middle position of the Corolla's rear seat is very small. 2. Handling: The overall ride is comfortable and the driving is stable, but the steering accuracy is low; the sense of hesitation is obvious, and the noise is small, especially when idling, it is relatively quiet; the suspension tuning is on the softer side, which can filter out bumps on the road, providing better comfort.