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Home >> Infiniti >> 2004 >> QX56 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 148 (Engine Control System Testing & Engine Component Testing) >> Emission Systems & Subsystems >> Fuel Tank Leak Test >> Test Description
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Test Description

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2002 Saturn SL2, 2002 Saturn SL1, 2002 Saturn SL, 2002 Saturn SC2, and 2002 Saturn SC1. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 1

    Perform this procedure in order to determine that no EVAP diagnostic DTC is present.

  2. 3

    This test is to locate fuel leakage in the fuel lines.

  3. 4

    This tests for fuel leaks below the fuel tank fuel level.

  4. 5

    This test is to locate fuel vapors escaping above the fuel level in the fuel tank.
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