toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Diagram Information and Instructions|Page 2431 > < Diagram Information and Instructions|Page 2429
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Vacuum Switching Valve for PAIR: Testing and Inspection

INSPECTION 

1. Remove air intake chamber.
2. Remove vacuum switching valve.

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Disconnect the air hose and vacuum hose from the air intake chamber.

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Remove the 4 bolts and emission control valve set assembly.

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Disconnect the connector and 3 vacuum hoses, and remove the screw and vacuum switching valve.

3. Inspect vacuum switching valve for open circuit.

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Using an ohmmeter, check that there is continuity between the terminals.

Resistance:  37 - 44 ohms at 20°C (68°F) 

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If there is no continuity, replace the vacuum switching valve.

4. Inspect vacuum switching valve for ground.

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Using an ohmmeter, check that there is no continuity between each terminal and the body.

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If there is continuity, replace the vacuum switching valve.

Diagram Information and Instructions|Page 2431 > < Diagram Information and Instructions|Page 2429