This procedure replaces the EVAP vent valve (canister close valve) located near the charcoal canister under the rear of the vehicle on 2014-2019 Toyota Corolla models.

Warnings

Tools required

Parts

• EVAP vent valve (canister close valve) × 1 — 90910-12276 or equivalent
• Hose clamps (if damaged) × 2 — Use OEM specification

Preparation

1. Park vehicle on level ground and apply parking brake
2. Place wheel chocks at front wheels
3. Allow vehicle to sit for at least 10 minutes to equalize EVAP system pressure
4. If equipped, clear any EVAP-related diagnostic trouble codes and note them for verification after repair

Procedure

1. 1

   Raise and support vehicle
   Raise the rear of the vehicle using a floor jack at the rear jacking point. Support the vehicle securely on jack stands placed at the designated rear jacking points. Ensure the vehicle is stable before proceeding.
2. 2

   Locate EVAP vent valve
   Position yourself under the rear of the vehicle on the driver's side. The EVAP vent valve is mounted on or near the charcoal canister, which is located forward of the fuel tank on the driver's side frame rail. It is a small cylindrical component with an electrical connector and two vapor hoses attached.
3. 3

   Disconnect electrical connector
   Press the locking tab on the electrical connector and pull the connector straight off the EVAP vent valve. If the connector is difficult to remove due to corrosion, gently wiggle it while pulling. Do not pull on the wiring harness itself.
4. 4

   Disconnect vapor hoses
   Using a flat-blade tool if necessary, loosen the hose clamps securing the two vapor hoses to the vent valve. Slide the clamps away from the valve connections. Carefully twist and pull each hose off the valve nipples. Note the orientation of each hose for proper reinstallation.
5. 5

   Remove vent valve mounting
   Remove the mounting bolt or bracket securing the EVAP vent valve to the canister or vehicle frame using a 10mm socket. Keep the mounting hardware for reinstallation.
   Torque spec

   Mounting Bolts26 Nm (19 lb-ft)
6. 6

   Remove EVAP vent valve
   Pull the vent valve away from its mounting location. Inspect the valve for signs of damage, contamination, or corrosion. Check both hose nipples for cracks or damage.
7. 7

   Prepare new vent valve
   Remove the new EVAP vent valve from its packaging. Verify it matches the original valve in terms of connector type, hose nipple configuration, and mounting style. Inspect the hose nipples on the new valve for any shipping damage.
8. 8

   Install new vent valve
   Position the new EVAP vent valve in the mounting location with the electrical connector facing the same direction as the original. Install the mounting bolt or bracket and tighten to specification using a torque wrench.
   Torque spec

   Mounting Bolts26 Nm (19 lb-ft)
9. 9

   Connect vapor hoses
   Push each vapor hose firmly onto the corresponding nipple on the new vent valve, ensuring each hose is fully seated. Reposition the hose clamps over the hose connections and tighten them to specification. If the original clamps are damaged or weakened, replace them with new clamps.
   Torque spec

   Hose Clamps3 Nm (2 lb-ft)
10. 10

    Connect electrical connector
    Push the electrical connector onto the new EVAP vent valve until it clicks into place. Gently tug on the connector to verify it is fully locked. Ensure the wiring harness has adequate slack and is not kinked or stretched.
11. 11

    Lower vehicle
    Carefully raise the vehicle slightly with the floor jack, remove the jack stands, and lower the vehicle completely to the ground. Remove the wheel chocks.

Reassembly

1. Ensure all hose connections are secure and clamps are properly tightened
2. Verify the electrical connector is fully seated and locked
3. Check that no tools or parts were left under the vehicle

Verification

• Start the engine and allow it to idle for 2-3 minutes to initialize the EVAP system
• Using an OBD-II scanner, command the EVAP vent valve to open and close (active test) and verify proper operation by listening for a clicking sound from the valve
• Check for diagnostic trouble codes; no EVAP vent valve codes should be present
• If equipped with EVAP monitor readiness, drive the vehicle through a complete drive cycle to set the monitor to 'Ready' status
• Inspect under the vehicle for any vapor leaks around the hose connections

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