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Home >> Chevrolet >> 2014 >> Spark LS, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.2L - DTC P0010 To DTC P0446 >> Diagnostic Information and Procedures >> DTC P0442 >> Circuit/System Testing
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Circuit/System Testing

NOTE:
  • Refer to the GE 41413-A  Evaporative Emissions System Tester (EEST) operation manual for detailed instructions in Evaporative Emission System Diagnosis
  • Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize or produce smoke from a leak.
  • Ensure that the underbody temperature of the vehicle and the tester are similar.
  1. Disconnect the purge tube at the quick connector on the EVAP canister side of the Q12 Evaporative Emission Canister Purge Solenoid Valve and install the CH 48096  EVAP Service Port Access Tool.
  2. Connect the GE 41413-A  Evaporative Emissions System Tester (EEST) to the CH 48096  EVAP Service Port Access Tool.
  3. Using a scan tool close the EVAP vent solenoid valve to seal the EVAP system.
  4. Use the flow meter on the GE 41413-A  Evaporative Emissions System Tester (EEST), calibrated to 0.51 mm (0.020 in) to determine if there is a leak.
    • If a leak is detected 
    1. Use the GE 41413-A  Evaporative Emissions System Tester (EEST) to apply smoke to the EVAP system at the purge tube until the leak is located using the GE 41413-SPT  High Intensity White Light
    • No leak in the EVAP system 
  5. All OK.
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