The ESIM (EVAP System Integrity Monitor) switch is attached to the EVAP canister and is usually not serviceable. Replace the switch by replacing the EVAP canister. Refer to EVAP canister removal/installation.If servicing separately, refer to the following:

The ESIM switch (2) is located on the EVAP canister (1) The picture displays a typical EVAP Canister and a typical ESIM switch.

Remove both plastic lines from switch by folding line tabs (2).

Disconnect electrical connector at switch.Clean any dirt from ESIM switch and its lines.

A lock tab (see arrow) is used on the back of the switch. Push lock tab towards switch while rotating switch counterclockwise 1/4 turn for removal.