toyota Workshop Repair Guides

Toyota Landcruiser 4WD L6-45L Workshop Service and Repair Manuals

Vacuum Switching Valve (VSV) for EGR <--> [EGR Control Solenoid] > < Thermal Vacuum Valve for EVAP <--> [Thermal Vacuum Valve - EVAP]|Specifications|Page 2511
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EGR Vacuum Modulator: Testing and Inspection

INSPECTION 

1. Inspect exhaust gas recirculation vacuum modulator operation.

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Disconnect the vacuum hoses from ports P, Q and R of the exhaust gas recirculation vacuum modulator.

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Block ports P and R with your finger.

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Blow air into port Q, and check that the air passes through to the air filter side freely.

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Start the engine, and maintain speed at 2,500 rpm.

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Repeat the above test. Check that there is a strong resistance to air flow.

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If operation is not as specified, replace the exhaust gas recirculation vacuum modulator.

Vacuum Switching Valve (VSV) for EGR <--> [EGR Control Solenoid] > < Thermal Vacuum Valve for EVAP <--> [Thermal Vacuum Valve - EVAP]|Specifications|Page 2511