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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1972 (Immobilizer System) >> Diagnostic Information and Procedures >> Hood Ajar Indicator/Message Malfunction (without HP7) >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Hood Ajar Switch

  1. Ignition OFF, disconnect the harness connector at the hood ajar switch.
  2. With the switch in the hood closed position, test for infinite resistance between the ground terminal A and the signal terminal B.
    • If not the specified value, replace the hood ajar switch.
  3. Test for less than 2.0 ohms between the ground terminal A and the signal terminal C.
    • If greater than the specified range, replace the hood ajar switch.
  4. With the switch in the hood open position, test for infinite resistance between the ground terminal A and the signal terminal C.
    • If not the specified value, replace the hood ajar switch.
  5. Test for less than 2.0 ohms between the ground terminal A and the signal terminal B.
    • If greater than the specified range, replace the hood ajar switch.
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