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Home >> Ford >> 2003 >> Excursion 7.3 F, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1332 (Safety Belt System) >> Diagnosis And Testing >> Safety Belt System >> Component Test >> Functional Test - System Road Test Inspection
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Functional Test - System Road Test Inspection

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: If the RH or the rear safety belts are to be tested, a passenger must be used.
  1. Fasten the safety belts and proceed to a safe area.
  2. Attain a speed of 8 km/h (5 mph).
    3. WARNING: The driver and passenger must be prepared to brace themselves if the retractor does not lock.
  3. Test the safety belts.
    1. Grasp the shoulder harness and prepare to lean forward.
      2. WARNING: The maximum brake application should be on dry concrete or equivalent hard surface, NEVER on wet pavement or gravel.
      WARNING: The driver and passenger must be prepared to brace themselves in the event the retractor does not lock.
      NOTE: Do not jerk on the safety belt webbing when carrying out this test. Lean forward slightly when the brake application is made.
    2. Make a maximum brake application without a skid.
  4. The safety belts should lock up with minimum webbing extension.
  5. If there is a lockup of both shoulder straps, the safety belt assemblies are functioning correctly. Should either or both retractors fail to lock up at the 8 km/h (5 mph) speed, repeat the test at a constant 24 km/h (15 mph) speed. (This test must be carried out with a RH front or rear passenger if the RH front or rear safety belts are to be tested).
    6. CAUTION: Before installing a new safety belt assembly, inspect the mounting area for damage and distortion. If the retractor of a new safety belt assembly has been bolted into a damaged or distorted mounting area, the retractor could be warped and may not function. If this is the case, remove the retractor, return the vehicle structure to its original production configuration and install a new safety belt assembly.
  6. If either or both retractors do not lock up at the 24 km/h (15 mph) test, return the vehicle for service of malfunctioning safety belts.
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