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Home >> Cadillac >> 2008 >> SRX 3.6 7, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 3.6L - DTC P0341 To DTC P2099 >> DTC P0451 >> Circuit/System Testing

Circuit/System Testing

  1. Remove the fuel fill cap. Connect the GE-41415-50  to the fuel tank filler neck. Connect the J 41413-200  to the GE-41415-50  . See Special Tools .
  2. Seal the system using the Purge Seal function with a scan tool.
  3. Pressurize the EVAP system with nitrogen to 5 inches H20. Compare the Fuel Tank Pressure Sensor parameter to the J 41413-200  pressure/vacuum gage. See Special Tools . The FTP sensor should be within 1 inch H20 of the pressure/vacuum gage.
    • If the FTP is not within 1 inch H20 of the pressure/vacuum gage, replace the FTP sensor.
  4. Command the vent solenoid valve OPEN with a scan tool.
    • If the FTP sensor parameter is not 0 inch H20, replace the FTP sensor.
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