Amigo 2WD V6-3.2L (1999)
Canister Purge Solenoid: Testing and Inspection
EVAP Canister Purge Valve Solenoid Check
Evaporative (EVAP) Emission Canister Purge Valve Solenoid Check
Circuit Description
The evaporative emissions canister purge is controlled by a solenoid that allows manifold and/or vacuum to purge the canister when it is energized. The
powertrain control module (PCM) supplies a ground to energize the solenoid valve (purge ON). The EVAP purge solenoid control is turned ON and
OFF several times a second. The duty cycle (pulse width or 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.
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Check the malfunction indicator lamp for a possible mechanical problem.
