STS AWD V6-3.6L (2007)
Step 16 - Step 21
The numbers below refer to the step numbers on the diagnostic table.
3. This step verifies that the fuel pump is operating.
5. This step verifies that the vehicle is not out of fuel. If the right fuel sender is below 0.8 volts, and the left fuel sender is above 0.8 volt, a fuel
transfer condition exists.
8. This step tests for an internal fuel leak. If the fuel pressure drops during this test, then an internal loss of pressure is indicated.
11. This step isolates the condition. Replace the primary fuel tank module assembly, if the fuel pressure remains constant, after closing the valve on
the fuel pipe shut-off adapter. Locate and replace the leaking fuel injector if the pressure continues to decrease after closing the valve on the
adapter.
14. This step isolates the condition. Replace the primary fuel tank module assembly for a stuck open or leaking fuel pressure regulator, if the fuel
pressure increases above the specified value.
17. This step verifies that a circuit condition is not the cause of a fuel pressure concern. Inspect all fuel pump electrical circuits thoroughly.
