LG WM3988H-A Series Manual page 152

Component Test Procedures
Component Test Procedures
Using an ohmmeter, check from the white connector terminal 1 to
the red connector terminal 3. The resistance should be 0Ω.
Then check from the white connector terminal 3 to the red
connector terminal 1. The resistance should be 0Ω.
If these tests pass, reconnect the white connector but not the red
connector. Plug in the machine in.
Read the voltage across terminals 1 and 3 of the red connector.
It should be approximately 120 V , the same as at the outlet.
AC
152 T-73
WM3988