Parts for your 2002 Toyota Echo|yaris-Transmission filter

2002 Toyota Echo/Yaris transmission filter: what it is, whether you’ve got one, and how to look after it

For the 2002 Toyota Echo/Yaris, a transmission filter is fitted on vehicles with the automatic transaxle (Aisin U340E/U341E). Manual models (C5x 5‑speed) don’t use a transmission filter at all. This setup is confirmed in Toyota’s service literature and parts catalogue, which show an internal ATF “oil strainer” housed in the auto’s pan (commonly listed as Strainer, Oil (AT) p/n 35330‑0W010 or supersession). Technical references: Toyota Service Information (TIS) – 2002 Echo/Yaris Repair Manual, Automatic Transaxle U340E/U341E (Components/Overhaul – Oil Strainer), Aisin AW U340E/U341E technical training, Toyota Genuine Parts catalogue for 1NZ‑FE Echo/Yaris.

On autos, that strainer’s job is to catch clutch and band debris and keep the hydraulic circuits and solenoids clean. It’s a mesh-style filter, so it doesn’t usually “wear out” fast like an engine oil filter, but it can clog over time if the fluid is neglected. During servicing, most workshops focus on fluid condition first. Toyota specifies ATF Type T‑IV for this transmission, fresh, clean T‑IV is the single biggest factor in long life and crisp shifts.

When’s the filter replaced? There’s no strict kilometre-based interval from Toyota for the strainer, it’s normally serviced when the pan is off—for example at higher mileage, after heavy use, or if there are symptoms like harsh/flare shifts, delayed engagement, or a contaminated pan. A sensible approach in Aussie and Kiwi conditions is to plan an inspection around 150,000–200,000 km, sooner if the car tows or sees lots of stop‑start or hill work. If the pan is dropped, the technician should clean the magnets, inspect the sediment, replace the strainer O‑ring, and refit with a new pan gasket or sealant per the manual, torquing bolts to spec. While there, a fresh filter/strainer is inexpensive insurance.

Between pan services, stick to periodic ATF drain‑and‑fills (not just a “top‑up”), using genuine or high‑quality T‑IV to keep oxidation, varnish and debris at bay. Avoid mixing fluid types and always check level hot, on level ground, following the Toyota procedure.

What if it’s a manual Echo/Yaris? There’s no transmission filter in the manual box—just gear oil and a magnetic drain plug. Routine maintenance is simply replacing the specified manual trans oil at the recommended interval and checking for metal on the magnet.

• Automatic models: internal ATF strainer present (service with pan off, use Toyota ATF Type T‑IV).
• Manual models: no filter, change manual gearbox oil at interval.

Does a 2002 Toyota Echo/Yaris have a transmission filter?
Automatic versions do—an internal ATF strainer inside the pan on the U340E/U341E. Manual versions don’t have a filter. If you’re unsure which you’ve got, check the shifter layout or your build plate, an auto will list U340E/U341E.

How often should the transmission filter be replaced?
There’s no fixed interval. Many workshops inspect/replace the strainer when the pan is removed, typically around 150,000–200,000 km, or sooner if the fluid is dirty or there are shift issues. Regular ATF drain‑and‑fills with Type T‑IV help keep the strainer clean for longer.

What fluid should be used, and can it be mixed?
Use Toyota ATF Type T‑IV for the 2002 Echo/Yaris automatic. Don’t mix with other specs (including WS), mixing can cause shift quality problems. If changing fluid types, a thorough service is recommended.