Optima V6-2.7L (2003)
Speaker: Testing and Inspection
1. Check the speaker by using an ohmmeter If an ohm-meter indicates the impedance of the speaker when checking between the speaker (+) and
speaker (-) of the same channel, the speaker is okay.
standard impedance is stamped at the back of speaker.
2. If clicking sound is emitted from the speaker when the ohmmeter plugs touch the speaker terminals, the speaker is okay.