2011 Toyota Tacoma Regular Cab Owners Manual - Page 960

4-3. Do-it-yourself maintenance n 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 within the recommended levels, adjust inflate the tire. 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. 398