Component Location
General Description

The evaporative emission control system prevents hydrocarbon (HC) vapors from the fuel tank from escaping into the atmosphere where they could form photochemical smog. Gasoline vapors are collected in the charcoal canister. The ECM controls the Purge Control Solenoid Valve (PCSV) to purge any collected vapors from the canister back to the engine for combustion. This valve is actuated by the purge control signal from the ECM and controls fuel vapor flow from the canister to the intake manifold.

DTC Description

ECM sets DTC P0444 if the ECM detects that the PCSV control circuit is open.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● Electrical check

● Open in PCSV harness

● Contact resistance in connectors

● Faulty PCSV

Enable Conditions

● 10 < Battery voltage(V) < 16

Threshold Value

● Line break

Diagnostic Time

● 3 sec.

MIL On Condition

● 2 Driving Cycles

Specification

Temp.(°C)

Temp.(°F)

PCSV Resistance(Ω)

20

68

Approx. 16

Schematic Diagram
Signal Waveform
Яндекс.Метрика