TOYOTA 2010 Matrix - Manual (Page 336)

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4-3. Do-it-yourself maintenance
■ Tire inflation pressure check interval
You should check tire inflation pressure every two weeks, or at least
once a month.
Do not forget to check the spare.
■ Inspection and adjustment procedure
Tire valve
Tire pressure gauge
Remove the tire valve cap.
Press the tip of the tire pressure gauge onto the tire valve.
Read the pressure using the graduations of the gauge.
If the tire inflation pressure is not at the recommended level
adjust the pressure.
If you add too much air, press the center of the valve to
lower.
After completing the tire inflation pressure measurement
and adjustment, apply soapy water to the valve and check
for leakage.
Reinstall the tire valve cap. STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6