Evaporative Emission Control Canister: Testing and Inspection

1. REMOVE CHARCOAL CANISTER ASSEMBLY
a. Disconnect the RH rear drive shaft from the differential.




b. Remove the charcoal canister assembly.
1. Disconnect the vapor pressure sensor connector.
2. Disconnect the VSV connector for pressure switching valve.
3. Disconnect the purge line hose, EVAP line hose and air inlet line from the charcoal canister.
4. Disconnect the vent line hose from the charcoal canister.
Push the connector deep inside, pinch portion A, and pull out the connector.

5. Disconnect the air drain hose from the canister tank.
6. Remove the 3 nuts and the charcoal canister assembly.

2. INSPECT CHARCOAL CANISTER




a. Visually check the charcoal canister for cracks or damage.




b. Inspect the charcoal canister operation.
1. Plug the vent port with a cap.
2. While holding the purge port closed, blow air (1.76 kPa, 18 gf/sq.cm, 0.26 psi) into the EVAP port and check that air flows from the air drain port.




3. While holding the purge port and the air drain port closed, blow air (1.76 kPa, 18 gf/sq.cm, 0.26 psi) into the EVAP port and check that air does not flow from the air inlet port.




4. Apply vacuum (3.43 kPa, 25.7 mmHg, 1.01 in.Hg) to the purge port, check that the vacuum does not decrease when the air inlet port is closed, and check that the vacuum decreases when the air inlet port is released.




5. While holding the air inlet port closed, apply vacuum (3.43 kPa, 25.7 mmHg, 1.01 in.Hg) to the EVAP port and check that air flows into the purge port.

If operation is not as specified, replace the charcoal canister.


3. REINSTALL CHARCOAL CANISTER ASSEMBLY
a. Install the charcoal canister assembly.
b. Connect the RH rear drive shaft to the differential.