P1349 VVT System Malfunction (Bank 1) - How to Avoid Expensive Repairs in 2002 Toyota Corolla

I've come across information indicating that the P1349 error code in a 2002 Toyota Corolla relates to a malfunction in the VVT-i system, potentially due to either a faulty VVT-i controller or a clogged screen inside the VVT-i actuator. I'm concerned about being charged for expensive parts—some dealerships suggest replacing the entire VVT-i control module, which can cost over $1000. How can I verify whether the issue is actually a clogged screen (a relatively inexpensive fix) rather than a defective component? If a dealer claims there's a broken part, what specific signs or diagnostic steps should I look for to ensure they're not overcharging me? Any advice on how to identify and address this issue cost-effectively would be greatly appreciated.