Air Switching Valve (for Bank 1)

1UR-FE EMISSION CONTROL: AIR SWITCHING VALVE (for Bank 1): INSPECTION

1. INSPECT AIR SWITCHING VALVE ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





NOTICE:
When measuring the resistance, do not touch terminals 3, 4 or 5.

HINT
When measuring the resistance, make sure that the surface temperature of the air switching valve assembly is 20°C (68°F).

If the result is not as specified, replace the air switching valve assembly.





(b) Check the operation of the air switching valve.





(1) Check that air does not flow from port A to port B.

Text in Illustration





NOTICE:
Make sure the applied pressure is 30 kPa (0.3 kgf/cm2, 4.4 psi) or less.

If the result is not as specified, replace the air switching valve assembly.

(2) Apply battery voltage across terminals 1 and 2.

NOTICE:
When applying voltage, do not touch terminals 3, 4 or 5.





(3) Check that air flows from port A to port B.

Text in Illustration





If the result is not as specified, replace the air switching valve assembly.