Toyota 2004 Matrix Owner's Manual page 170

3. Remove the filter cover as shown in
the illustration.
152
'04 MATRIX_U (L/O 0307)
4. Remove the filter from the filter out-
let. Inspect the filter on the surface.
If it is dirty, it should be replaced.
When installing the filter in the filter
outlet, keep the arrow pointing up.
INFORMATION
The air filter should be installed prop-
erly in position. The use of air condi-
tioning with the air filter removed
may cause deteriorated dustproof per-
formance and then affect air condi-
tioning performance.
2004 MATRIX from Oct. '03 Prod. (OM12861U)