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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 783 (Engine Control System & Fuel System - 2.2L (L61) - DTC P0412 To DTC P2544) >> DTC P0442 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize.
  • Refer to the J 41413-200  operation manual for detailed instructions in Evaporative Emission System Diagnosis
  1. Using the GE-41415-50  , connect the J 41413-200  to the vehicle filler neck. For vehicles without a service port, disconnect the purge tube at the quick connector on the EVAP canister side of the EVAP canister purge solenoid valve and install the CH-48096  . See Special Tools .
  2. Seal the system and use the flow meter on the J 41413-200  , calibrated to 0.51 mm (0.020 in) to determine that there is no leak in the EVAP system.
    • If a leak is detected use the J 41413-200  to apply smoke to the EVAP system at the service port or the filler neck until the leak is located. For vehicles without a service port, disconnect the purge tube at the quick connector on the EVAP canister side of the purge solenoid valve and install the CH-48096  . See Special Tools .
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