toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Diagnostic Trouble Code Tests and Associated Procedures|Page 2782 > < Diagnostic Trouble Code Tests and Associated Procedures|Page 2780
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Vacuum Switching Valve (VSV) for EVAP: Component Tests and General Diagnostics

1. REMOVE VSV.

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Disconnect the connector and 2 EVAP hoses from the VSV.

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3RZ-FE:
Remove the 2 bolt and VSV assembly.

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Remove the screw and VSV.

2. INSPECT VSV.
A. Inspect VSV for open circuit.

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

Resistance: At 2O°C (68°F): 30 - 34 ohms 

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If there is no continuity, replace the VSV

B. Inspect VSV 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 VSV.

C. Inspect VSV operation.

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Check that air does not flow from ports E to F.

NOTICE: Never apply more than 93 kPa (0.95 kgf/sq.cm, 13.5 psi) of pressure compressed air to the VSV.

Diagnostic Trouble Code Tests and Associated Procedures|Page 2782 > < Diagnostic Trouble Code Tests and Associated Procedures|Page 2780