Camaro V6-3.8L VIN K (1995)
Canister Purge Solenoid: Description and Operation
The EVAP Purge Vacuum Switch is used by the PCM to monitor EVAP canister purge solenoid operation and purge system integrity. The EVAP Purge
Vacuum Switch should be closed to ground with no vacuum present (0% EVAP Purge PWM). With EVAP Purge Pulse Width Modulation (PWM) at
25% or greater, the EVAP Purge Vacuum Switch should open.
An incorrect EVAP Purge system flow should set a DTC P0441. A continuous purge condition with no purge commanded by the PCM should set a DTC
P1441. A fault in the EVAP Purge Vacuum Switch circuit should set a DTC P1442.
