The vapor pressure of a liquid is the point at which equilibrium pressure is reached, in a closed container, between molecules leaving the liquid and going into the gaseous phase and molecules leaving the gaseous phase and entering the liquid phase.n explanation of vapor pressure. Vapor pressure is constant when there is an equilibrium of water molecules moving between the liquid phase and the gaseous phase, in a closed container.
When a potential problem is detected, a dashboard warning light called a malfunction indicator light (MIL) is illuminated to alert the driver. An OBD system detects a problem well before symptoms such as poor performance, high emissions or poor fuel economy are recognized by the driver.
Repair faulty brake light switch. The brake light switch is mounted in front of the brake pedal and is responsible for activating the brake lights when the brake pedal is pressed.he brake pedal switch can fail a few different ways. You may have a brake light warning lamp illuminate in your instrument cluster, indicating a problem with the brake light circuit. If none of the brake lights illuminate and the fuse is fine, the brake light switch is most likely the cause.