Radio - Poor AM Reception

91chrysler04

NO.: 08-08-91

GROUP: ELECTRICAL

DATE: May 20, 1991


SUBJECT: Poor AM Radio Reception


MODELS:

1988-91 (AC) DYNASTY/NEW YORKER SALON
1990-91 (AY) IMPERIAL/FIFTH AVENUE


SYMPTOM/CONDITION:

Vehicles equipped with a power antenna may have poor AM radio reception due to corrosion at the antenna connection. This condition is most apparent on weak AM signals or in a location that temporarily interferes with the signal, such as driving under a freeway overpass. The corrosion is caused by water and salt spilling onto the antenna connection from the windshield cowl. Vehicles experiencing this condition should have the following procedure performed.


PARTS REQUIRED:

1 Power Antenna 4469168

As Required Silicone Rubber 4318025
Adhesive Sealant

As Required Lubriplate 4549615


REPAIR PROCEDURE:

This procedure involves replacement of the power antenna and cleaning of the antenna lead male connector.

1. Remove the power antenna as described in the appropriate service manual.

2. With very fine emery cloth, clean the mating cable male fitting of any white colored corrosion. If the mating cable is severely corroded, the cable may need to be replaced.

3. To improve the electrical connection, carefully pry the three fingers on the male fitting out approximately 0.040 inch (1.0 mm).

4. Spread a very light coat of Lubriplate (PN 4549615) on the male connector to protect against future corrosion.

Figure 1:

5. Before installing the replacement antenna, apply Silicon Rubber Adhesive Sealant (PN 4318025) to seal the area between the top of the foam sleeve surrounding the female fitting and the coaxial cable (Figure 1).


6. Install the power antenna as described in the appropriate service manual. Check for improved radio reception on weak AM radio stations before complete reassembly of the vehicle.


POLICY: Reimbursable within the provisions of the warranty.


TIME ALLOWANCE:
Labor Operation No. 08-60-20-90 . . . . . . . . . . . . . . 0.5 Hrs.


FAILURE CODE: 21 - Connection Defect