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Home >> Pontiac >> 2008 >> Torrent GXP, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.6L - DTC P0335 To DTC P2098 >> DTC P0496 >> Circuit/System Testing

Circuit/System Testing

  1. Disconnect the EVAP purge solenoid valve electrical harness connector.
  2. Start the engine.
  3. Command the EVAP vent closed.
  4. Increase the engine speed to 1,200-1,500 RPM.
  5. Observe the fuel tank pressure sensor inches H2O with a scan tool.
  6. Verify the scan tool FTP sensor H2O parameter is -0.5 to +0.5 inches H2O.
    • If the FTP sensor in H2O parameter is greater than the specified range, replace the EVAP purge solenoid valve.
  7. With the engine OFF and the ignition ON, disconnect the EVAP purge solenoid valve pipe.
  8. Observe the scan tool FTP sensor in H2O parameter.
  9. Verify the scan tool FTP sensor parameter is -0.5 to +0.5 inches H2O.
    • If the FTP sensor parameter is greater than the specified range, replace the FTP sensor.
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