Positive Crankcase Ventilation (Pcv) System; Evaporative Emission (Evap) Control System; Evap Canister; Fuel Tank Pressure (Ftp) Sensor - Honda S2000 Service Manual

Fuel and Emissions Systems
System Descriptions (cont'dl
Positive Crankcase Ventilation {PCV} System
The PCV valve prevents blow-by gases from escaping
into the atmosphere by venting them into the intake
m a n i f o l d .
/ BREATHEB
/ PIPE
/
,
$:a-- \
PCV
VALVE
INTAKE
MANIFOLD
-
: BLOW-BY VAPOR
€: FRESH AIR
0
11-26
Evaporative Emission (EVAPI Control
System
Refer to the System Diagram to see the functional
lavout of the system.
EVAP Canister
The EVAP canister temporarily stores fuel vapor lrom
the fuel tank until it can be purged back into the engine
and bu(ned (re{er to the Sysiem Diagram to see the
functional laVout of the svstem).
EVAP Canister Purge Valve
When the engine coola nt temperatu re is below 149'F
(65'C), the ECM turns off the EVAP canister purge valve
which cuts vacuum to the EVAP canister.
Fuel Tank Pressure (FTPI Sensor
The FTP sensor converts fuel tank absolute Dressure
i n t o a n e l e c t r i c a l i n D u t t o t h e E C M .
SENSOR CHIP