Inspection 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.
Specifications AVN Head Unit ItemSpecificationPower sourceDC 14.4V (-) groundFrequency range / Channel spaceFM : 87.5 ~ 107.9 MHz / 200 KHzAM : 530 ~ 1710 KHz / 10 KHzTuning typePLL SYNTHESIZED TUNINGImpedance2 ohm x 4Antenna80 pF 75 OhmDark currentMax.