Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Mode 8: EVAP System Testing
This mode can close EVAP system with ignition on (engine off). The following components can be opened or closed:
- EVAP canister vent control can be opened.
- Vacuum cut valve by-pass valve can be closed.
During the following conditions, mode 8 cannot function:
- Low ambient temperature or low fuel temperature.
- Low battery voltage.
- Engine running or ignition switch in the OFF position.
- Too much pressure applied to EVAP system.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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