Perform Active Test Using Intelligent Tester For Vent Valve

Result

Connect an intelligent tester to the DLC3. Turn the ignition switch ON and turn the tester ON. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE (ALONE).

Measure the voltage between terminal VPMP of the ECM connector and the body ground when the vent valve is turned ON (close) and OFF (vent) using the tester.

Result

Test Results

Suspected Trouble Areas

Proceed To

Below 3 V when OFF and ON

Power source of vent valve

A

Between 9 V and 14 V when OFF Below 3 V when ON

Vent valve

B

Between 9 V and 14 V when OFF and ON

ECM

Go to step 22

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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