SECONDARY AIR INJECTION (AIR) CONTROL VALVE INSPECTION [13B-MSP]

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1.  Remove the secondary air injection control valve. (See SECONDARY AIR INJECTION (AIR) CONTROL VALVE REMOVAL/INSTALLATION [13B-MSP].)

2.  Verify that there is no air flow between A and B of the AIR control valve port.

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•  If there is air flow, replace the AIR control valve. (See SECONDARY AIR INJECTION (AIR) CONTROL VALVE REMOVAL/INSTALLATION [13B-MSP].)

3.  Install the vacuum pump to the AIR control valve.

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4.  Pressurize the actuator valve of the AIR control with a negative pressure of approx. 60 kPa {450 mmHg, 18 inHg}.

Caution
•  Since the valve actuator of the AIR control could be damaged, do not pressurize positive pressure or negative pressure more than 100 kPa {1.02 kgf/cm2, 14.5 psi}.

5.  Blow air through port A, then verify that there is air flow.

•  If there is no air flow, replace the AIR control valve. (See SECONDARY AIR INJECTION (AIR) CONTROL VALVE REMOVAL/INSTALLATION [13B-MSP].)

6.  Blow air from through port B, then verify that there is no air flow.

•  If there is air flow, replace the AIR control valve. (See SECONDARY AIR INJECTION (AIR) CONTROL VALVE REMOVAL/INSTALLATION [13B-MSP].)