Justin's Toyota Service

Remove Charcoal Canister Assembly

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2004 ENGINE PERFORMANCE Emission Control System - Sequoia

Fig. 17: Disconnecting Air Inlet Line Hose Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 17: Disconnecting Air Inlet Line Hose Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

9. INSPECT CHARCOAL CANISTER

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

2004 ENGINE PERFORMANCE Emission Control System - Sequoia

Fig. 18: Inspecting Charcoal Canister

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 18: Inspecting Charcoal Canister

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Inspect the charcoal canister operation.

1. While holding the purge port closed, blow air

(1.76 kPa, 18 gf/cm2 , 0.26 psi) into the EVAP port and check that air flows from the air drain port.

2004 ENGINE PERFORMANCE Emission Control System - Sequoia

Fig. 19: Inspecting Charcoal Canister Operation Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. While holding the purge port and the air drain port closed, blow air (1.76 kPa, 18 gf/cm2 , 0.26 psi) into the EVAP port and check that air does not flow from the air inlet port.

2004 ENGINE PERFORMANCE Emission Control System - Sequoia

Fig. 20: Checking Air Flow

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 20: Checking Air Flow

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3. 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.

2004 ENGINE PERFORMANCE Emission Control System - Sequoia

Fig. 21: Applying Vacuum

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 21: Applying Vacuum

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4. 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.

5. Remove the cap from the vent port.

10. INSPECT VSV FOR EVAP (See INSPECTION )

11. INSPECT VSV FOR CANISTER CLOSED VALVE (CCV) (See INSPECTION )

12. INSPECT VSV FOR PRESSURE SWITCHING VALVE (See INSPECTION )

13. INSPECT VAPOR PRESSURE SENSOR (See INSPECTION )

14. REINSTALL CHARCOAL CANISTER ASSEMBLY

2004 ENGINE PERFORMANCE Emission Control System - Sequoia

Fig. 22: Applying Vacuum

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 22: Applying Vacuum

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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