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Measuring Voltage

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.
CAUTION: Refer to Test Probe Caution .

The following procedure measures the voltage at a selected point in a circuit.

  1. Disconnect the electrical harness connector for the circuit being tested, if necessary.
  2. Enable the circuit and/or system being tested. Use the following methods:
    • Turn ON the ignition, with the engine OFF.
    • Turn ON the engine.
    • Turn ON the circuit and/or system with a scan tool in Output Controls.
    • Turn ON the switch for the circuit and/or system being tested.
  3. Select the V (AC) or V (DC) position on the DMM.
  4. Connect the positive lead of the DMM to the point of the circuit to be tested.
  5. Connect the negative lead of the DMM to a good ground.
  6. The DMM displays the voltage measured at that point.
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