Inspect Canister Pump Module Power Source For Vent Valve

Canister Pump Module Rav4


(a) Turn the ignition switch OFF.

(b) Disconnect the S3 canister pump module connector.

(c) Turn the ignition switch ON.

(d) Measure the voltage between VLVB terminal of the canister pump module connector and the body ground.


Test Results

Suspected Trouble Areas

Proceed To

9 to 14 V

1. Wire harness between vent valve and ECM

2. Vent valve

3. ECM


Below 3 V

Power source wire harness of vent valve


(e) Reconnect the canister pump module connector.

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  • katharina
    Where is the vacuum pump module on 2011 rav 4?
    11 months ago

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