EVAP System, Checking for Leaks

EVAP System, Checking for Leaks

Observe all safety precautions: => [ Safety Precautions ] Safety Precautions

View clean working conditions: => [ Clean Working Conditions ] Clean Working Conditions

Perform a preliminary check to verify the condition: => [ Preliminary Check ] Preliminary Check.

Special tools, testers and auxiliary items required

• Smoke tester.

• EVAP and Fuel Supply System Vacuum hose and line routing diagram.

• A connection to access the EVAP system can be found in the EVAP hose just below the EVAP purge solenoid.

• Replace seals and gaskets when performing repair work.

• Secure all hose connections using hose clamps appropriate for the model type.

Leak checking

- Using a Smoke tester, check the Evaporative Emission (EVAP) system for leaks.

• Always follow the manufacturers directions for the proper installation and operation of the smoke tester being used.

If a leak is detected:

- Check the fuel filler cap seal for damage and for proper installation. Replace if necessary.

- Check all hose connections of the EVAP system and replace or repair any leaking lines.

- Check all hose connections of the Fuel Supply system and replace or repair any leaking lines.

- Remove the rear seat bench. Refer to the Repair Information.

- Remove the floor cover seal.

- Inspect the seal under the Fuel Delivery Unit (fuel pump) locking flange for proper sealing. Also check the fuel line connections.

- Repair or replace any damaged component.

If no leaks are found in the EVAP or Fuel Supply System:

- Erase the DTC memory if a code was set. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 09.

- Perform a road test to verify repair.

Generate readiness code. Refer to => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.