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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Wiring Systems And Power Management - Service, Troubleshooting & Diagnosis) >> Testing for Electrical Intermittents >> Testing Procedure

Testing Procedure

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect the J 39200  to both sides of a suspected connector (still connected), or from one end of a suspected circuit to the other. See Special Tools . Refer to Troubleshooting with a Digital Multimeter  for information on connecting the J 39200  to the circuit. See Special Tools .
  2. Set the rotary dial of the J 39200  to the V (AC) or V (DC) position. See Special Tools .
  3. Press the range button of the J 39200  in order to select the desired voltage range. See Special Tools .
  4. Press the MIN MAX button of the J 39200  . See Special Tools . The J 39200  displays 100 ms RECORD and emits an audible tone (beep). See Special Tools .
    IMPORTANT: The 100 ms RECORD mode is the length of time an input must stay at a new value in order to record the full change.
  5. Simulate the condition that is potentially causing the intermittent connection, either by wiggling the connections or the wiring, test driving, or performing other operations. Refer to Inducing Intermittent Fault Conditions .
  6. Listen for the audible Min Max Alert which indicates that a new minimum or maximum value has been recorded.
  7. Press the MIN MAX button once in order to display the MAX value and note the value.
  8. Press the MIN MAX button again in order to display the MIN value and note the value.
  9. Determine the difference between the MIN and MAX values.
    • If the variation between the recorded MIN and MAX voltage values is 1 volt or greater an intermittent open or high resistance condition exists. Repair the condition as necessary.
    • If the variation between the recorded MIN and MAX voltage values is less than 1 volt an intermittent open or high resistance condition does not exist.
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