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 from the canister to the intake manifold.

DTC Description

Checking output signals from PCSV every 10 sec. under detecting condition, if signals indicating short to battery in the circuit are detected for more than 5 sec., PCM sets P0445. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

● Short to battery

● Poor connection

● Short to battery in harness

● PCSV

● PCM

Enable Conditions

● Engine running state

● 11V ≤ Battery voltage ≤ 16V

● Above enable conditions are met > 0.5 sec.

Threshold value

● Short to battery

Diagnosis Time

● Continuous (More than 5 sec.failure for every 10 sec.test)

MIL On Condition

● 2 driving cycles

Specification

Item

Coil resistance(Ω)

PCSV

14.0 ~ 18.0Ω ( at 20℃/ 68℉)

Schematic Diagram
note
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Signal Waveform
Яндекс.Метрика