Antenna, Radio: Testing and Inspection

The antenna has a short cable which connects into the instrument panel harness. The connection is made on the passenger side of the instrument panel.

Antenna performance may be tested by substituting a known good antenna. It is also possible to check short or open circuits with an ohmmeter or continuity light once the antenna cable is disconnected from the radio as follows:

Antenna Test Points:

1. Continuity should be present between the antenna mast and radio end pin of antenna cable plug.
2. No continuity should be observed or a very high resistance of several megaohms between the ground shell of the connector and radio end pin.
3. Continuity should be observed between the ground shell of the connector and the mounting hardware on the vehicle antenna. The wheel well splash shield must be removed for access to the antenna that is mounted on the load beam.
It is also possible to check short or open circuits with an ohmmeter or continuity light once the antenna has been removed from the vehicle.

Fig.7 Antenna Bench Test Points:

4. Continuity should be present between the tip of the mast and radio lead in.
5. No continuity should be observed or a very high resistance of several megaohms between the ground shell of the connector and radio end pin.
6. Continuity should be observed between the ground shell of the connector and the mounting bracket. Wiggle cable over its entire length to reveal intermittent short or open circuits during step 1, 2 and 3.