Diversity Antenna System

IMPORTANT: This diversity antenna system is comprised of 3 glass mounted antennas, a radio antenna module, and an FM impedance matching module. The primary AM and FM antennas are an integral part of the right rear quarter glass and are connected to the radio antenna module. The secondary FM antenna is an integral part of the left rear quarter glass and is connected to the FM impedance matching module. The radio antenna module, located in the headliner above the right rear quarter glass, processes the antenna reception signals and phase aligns them to create one strong signal. The FM impedance matching module, located in the headliner above the left rear quarter glass, boosts the secondary antenna signal and transmits it to the radio antenna module.

The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition. If the test leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement. If the test leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement. Refer to Testing for Intermittent and Poor Connections and Connector Repairs in Diagnostic Aids.

Perform the Antenna System Test and test the antenna coax cable prior to performing any of the following tests. Antenna System Test