Mode 8: EVAP System Testing

WARNING: This page is about a different car, the 2003 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.

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.