Cutlass V6-191 3.1L VIN M SFI (1998)
![background image](/oldsmobile/cutlass/v6-191_3.1l_vin_m_sfi/Page-1453007.png)
Voltage Drop Test
This test checks for voltage being lost along a wire, or through a connection or switch.
1. Connect the positive lead of a Digital Voltmeter (DVM) to the end of the wire (or to one side of the connection or switch) which is closer to the
Battery.
2. Connect the negative lead to the other end of the wire (or the other side of the connection or switch).
3. Operate the circuit.
4. The DVM will show the difference in voltage between the two points.
Testing For Short to Ground
Testing For Short With Self Powered Test Light Or Ohmmeter
WITH A TEST LIGHT OR DIGITAL VOLTMETER (DVM)
1. Remove the blown fuse and disconnect the load.
2. Connect a test light or voltmeter across the fuse terminals (be sure that the fuse is powered).
3. Beginning near the Fuse Block, wiggle the harness from side to side. Continue this at convenient points (about 6 inches apart) while watching the
test light or DVM.
4. When the test light glows, or the DVM registers, there is a short to ground in the wiring near that point.