Leak Pressure Measurement

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Purpose: Measure the pressure (leak pressure) when the evaporative emission system becomes the negative pressure by the vacuum pump.

Store the pressure as a leak pressure while the following conditions are met.

JUDGMENT VALUE

Conditions for storing the leak pressure	Threshold Value
When any one of the followings is established.
Reference pressure for setting the target negative pressure - Pressure sensor output value	≤ Value of Map 4
Pressure sensor output value	< -5 kPa (-37.298 mmHg, -1.5 inHg)
Time of negative pressure introduction	≤ 900000 ms