Antenna Amplifier: Testing and Inspection

DIAGNOSIS AND TESTING - ANTENNA MODULE

Special Tools:






1. Disconnect the negative battery cable.




2. Using a trim stick or another suitable wide flat-bladed tool, carefully pry between the Center High Mounted Stop Lamp (CHMSL) (3) and the CHMSL cover (4). The CHMSL cover (4) is secured to the headliner by five stamped nuts (1). As you pry on the trim stick, carefully pull down on the sides of the CHMSL cover far enough to disengage the three snap clips that secure it to the inner rear roof header.

NOTE: Be extremely careful not to pull too hard on the headliner (2) which could cause it to damage.

3. Once the snap clips of the CHMSL cover have been released, the cover can be removed by pulling down on the headliner and removing the five stamped 10mm nuts that secure it to the headliner (1).





4. Check the antenna connections to the antenna module and the antenna grid. If they are all right, continue. If they are not all right, clean and tighten the connections and re-test the audio.
5. Disconnect the antenna module white AM/ FM audio fakra connector (3) along the rear roof support to the passenger side of the AM/FM antenna module and connect the (9977-6-FM) to the harness connector (3).

6. Place the magnetic antenna on the roof of the vehicle.
7. Drive the vehicle outside to a clear un-obstructed overhead view.
8. Turn the radio on and try several AM and FM stations.
- Audio Improved - Check the antenna grid. Rear Glass Antenna Mast. If the grid checks good, replace the antenna module.

- Audio Did Not Improve - Check the radio and cables. Rear Glass Antenna Mast or .