3.
There should be no continuity between the No.30 and No.87 terminals when power is disconnected.
Test the horn by connecting battery voltage to the 1 terminal and ground the 2 terminal.
The horn should make a sound. If the horn fails to make a sound, replace it.
Remove the horn relay (A) from the engine room relay box.
There should be continuity between the No.30 and No.87 terminals when power and ground are connected to the No.85 and No.86 terminals.
There should be no continuity between the No.30 and No.87 terminals when power is disconnected.
Disconnect the negative (-) battery terminal.
Remove the engine room under cover.
Remove the bolts and disconnect the horn connectors, then remove the horn (A).
Install the horn and connect the horn connector.
Reassemble the engine room under cover.
