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Home >> Isuzu >> 2002 >> Rodeo LS, 2.2 D >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Emission Systems & Sub-Systems >> EVAP Canister Purge Valve Solenoid Check >> Circuit Description

Circuit Description

Canister purge is controlled by a solenoid valve that allows manifold vacuum to purge EVAP canister. PCM supplies ground to energize the solenoid valve (purge On). EVAP purge solenoid On time is determined by engine operating conditions including load, throttle position, coolant temperature and ambient temperature. Duty cycle is calculated by the PCM and the purge solenoid is enabled when appropriate conditions have been met:

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