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Home >> Pontiac >> 2009 >> G3 Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine Controls And Fuel - 1.6L (LDE, LLU, And LXV) Or 1.8L (2H0) - Troubleshooting And Diagnosis) >> Fuel System Diagnosis >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2010 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE:
    • Inspect the fuel system for damage or external leaks before proceeding.
    • Verify that adequate fuel is in the fuel tank before proceeding.
    • The fuel pump relay may need to be commanded ON a few times in order to obtain the highest possible fuel pressure.
  1. Ignition ON, command the fuel pump relay ON with a scan tool. You should hear the fuel pump turn ON and OFF.
  2. Ignition OFF, all accessories OFF, install the CH-48027  . Refer to FUEL PRESSURE GAUGE INSTALLATION AND REMOVAL .
  3. Ignition ON, command the fuel pump relay ON with a scan tool. Verify the fuel pressure is between 365-414 kPa (53-60 psi) and remains steady for 5 minutes.
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