Citation V6-173 2.8L VIN Z 2-bbl HP (1983)
Canister Purge Control Valve: Testing and Inspection
Fig. 020 CHART C-6BC CANISTER PURGE VALVE CHECK
Canister purge is controlled by a solenoid which allows manifold vacuum to purge the canister when de-energized.
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The ECM supplies a ground to energize the solenoid (purge off).
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The solenoid is energized (no purge) by grounding the test terminal with the ignition "ON" and engine stopped, or with the engine running if
the following are met:
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Engine run time less than specified.
