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Home › Pontiac › 2006 › G6 GTP, 2D Convertible › Repair and Diagnosis › Engine Performance › System › Engine Control System - 3.9L - DT P0315 To DTC P2071 › DTC P0446 › Circuit/System Verification

Circuit/System Verification

  1. Ignition ON and fuel cap removed, verify the FTP sensor parameter is between 1.3-1.7 volts.
    • If greater than the specified range, refer to FTP Sensor  in Circuit/System Testing.
  2. Install the fuel cap.
  3. With the engine running, the EVAP canister vent solenoid valve open, and the EVAP canister purge solenoid valve commanded to 100 percent, the fuel tank vacuum should not increase to more than 8 inches H2O.
    • If greater than the specified range, refer to Restriction  in Circuit/System Testing.
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