From the notch (A), carefully pry the speaker grille (B) out with
a small screwdriver, then disconnect the connectors. Be careful not to
damage the speaker grille and the dashboard.
Remove the screws and the front center speaker (A).
Measure the resistance between terminals No. 1 and No. 2. There should be about 4 ?.
If the resistance is not as specified, replace the front center speaker.