Rodeo S 2WD L4-2.2L (1999)
Canister Purge Solenoid: Testing and Inspection
EVAP Canister Purge Valve Solenoid Check
Evaporative (EVAP) Emission Canister Purge Valve Solenoid Check
Circuit Description
Canister purge is controlled by a solenoid valve that allows manifold vacuum to purge the canister. The powertrain control module (PCM) supplies a
ground to energize the solenoid valve (purge ON). The EVAP purge solenoid control is turned ON time) is determined by engine operating conditions
including load, throttle position, coolant temperature and ambient temperature. The duty cycle is calculated by the PCM and the purge solenoid is
enabled when the appropriate conditions have been met:
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The engine run time after start is more than 60 seconds.
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The engine coolant temperature is above 30 °C (86 °F).
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The fuel control system is operating in the Closed-Loop mode.
Diagnostic Aids
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Make a visual check of vacuum hoses.
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Check the throttle body for possible cracked or plugged vacuum block.
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Check the malfunction indicator lamp for a possible mechanical problem.
