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.
Switch, Evaporative Emissions System Monitor: Removal
Do not smoke or use open flames/sparks when servicing the fuel system. Wear protective clothing and eye protection. Make sure the area in which the vehicle is being serviced is in a well ventilated area and free of flames/sparks. Failure to comply may result in serious or fatal injury.
- Disconnect and isolate the negative battery cable.
- Raise and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE .
- Remove left rear wheel and tire.
- Remove the left rear wheelhouse splash shield. Refer to SHIELD, SPLASH, WHEELHOUSE, REMOVAL - REAR
.NOTE:
When removing the fresh air hose, remove the hose at the fresh air filter first, this will eliminate the risk of breaking the nipple from the ESIM during removal.
- Carefully remove the Evaporative System Integrity Monitor (ESIM) fresh air hose (1) at the fresh air filter.
- Disconnect the electrical connector (2) from the ESIM.
- A lock tab (1) is used on the back of the ESIM. Push lock tab towards the ESIM while rotating the ESIM counterclockwise 1/4 turn for removal.
- Remove the ESIM from the EVAP canister.
NO RELATED
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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.