Radio/Stereo: Testing and Inspection

AUDIO DIAGNOSTIC TEST PROCEDURES

CAUTION: The CD player will only operate between approximate temperatures of -23 °C and +65 °C (-10 °F and +145 °F).

Whenever a radio malfunction occurs:
1. First check FUSES:
a. Power Distribution Center (PDC), Interior lamp fuse, M1 - Radio Memory Feed
b. Fuse Block:
I. Fuse 12, Illumination in the fuse block
II. Fuse 16, Ignition feed in the fuse block

NOTE: The vehicles are shipped with the INTERIOR LAMP fuse disconnected.

2. Verify the radio wire harness connectors are properly connected before starting normal diagnosis and repair procedures.

Testing

AM/FM Stereo - CD - Cassette Tape (Part 1 Of 5):

AM/FM Stereo (Part 2 Of 5):

AM/FM Stereo (Part 3 Of 5):

AM/FM Stereo (Part 4 Of 5):

AM/FM Stereo (Part 5 Of 5):

The antenna has a short cable which connects into the instrument panel harness. The connection is made on the right 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 megohms 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 load beam.