3500 4x4 Pickup V10-488 8.0L Magnum (1994)
Antenna: Customer Interest
Radio - Poor Or No AM Reception
NO: 08-65-94
GROUP: Electrical
DATE: Nov. 4, 1994
SUBJECT:
Radio - Poor or No AM Reception
MODELS:
1994 (BR) Ram Truck
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT PRIOR TO 12/01/93, (MDH 12-01-XX).
SYMPTOM/CONDITION:
Customer may report poor or no AM radio reception. This may be due to internal corrosion in the antenna base and cable assembly.
PARTS REQUIRED:
1
56006789
Antenna Base & Cable Assembly
DIAGNOSIS PROCEDURE:
This bulletin involves the testing and replacement of the radio antenna.
1.
Disconnect the antenna cable interconnect located in the right hand side cowl area near the bottom of the HVAC unit in the interior of the vehicle.
To disconnect, remove the foam anti-vibration tape from the connectors (grasp both ends of the connectors and twist while pulling connectors
apart).
2.
Using a high quality Digital Volt Ohm Meter, measure the resistance of the cable center conductor to the threaded portion of the base where the
antenna mast is attached.
3.
Measure the resistance of the outside conductor of the cable to the antenna base mounting nut.
4.
A resistance reading higher than 0.2 ohms in step 2 or 3 indicates the need to replace the antenna base and cable assembly, P/N 56006789.
REPAIR PROCEDURE:
1.
Remove antenna mast from antenna body.
2.
Remove cap nut using antenna nut wrench C-4816
3.
Remove the antenna base from the fender through the access hole in the inner fender.
4.
Remove the antenna cable and grommet from the hole in the dash panel above the engine control module (PCM). Discard the base and cable
assembly.
5.
Route new base and cable assembly in the same manner as the old one. Be sure grommet is seated in the dash panel hole around the perimeter of
the grommet.
6.
Insert antenna body through hole in fender.
7.
Install adapter making sure tab indexes with opening in fender and antenna body.
8.
Install cap nut and torque to 95 N-m (70 in.lbs.).
9.
Install mast to antenna body.
10.
Inside of vehicle, reconnect the cable from the antenna to the I/P antenna cable making sure a "click" is heard when the connectors are pressed
together.
