Measuring Voltage Drop

WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to TEST PROBE NOTICE .

The following procedure determines the difference in voltage potential between 2 points.

Fig 1: Measuring Voltage Drop

Courtesy of GENERAL MOTORS CORP.

Set the rotary dial of the DMM to the V (DC) position.
Connect the positive lead of the DMM to one point of the circuit to be tested.
Connect the negative lead of the DMM to the other point of the circuit.
Operate the circuit.
The DMM displays the difference in voltage between the 2 points.