Section 15-00: Audio Systems—Service
1994 Mustang Workshop Manual
DIAGNOSIS AND TESTING
Symptom Chart
Condition
Possible Source
Action
Radio Chassis Inoperative Does Not Operate Properly
Open fuse.
Circuitry.
Radio chassis.
Ignition switch.
Go to
Pinpoint Test A.
Radio Chassis Display Blank (Radio Chassis Operates)
Open fuse.
Circuitry.
Ignition switch.
Radio chassis.
Go to
Pinpoint Test B.
Radio Chassis/Tape Player Inoperative Does Not Operate Properly
Open fuse.
Circuitry.
Radio chassis.
Tape player.
Ignition switch.
Go to
Pinpoint Test A.
Radio Chassis/Tape Player Display Blank Radio Chassis/Tape Player Operates
Open fuse.
Circuitry.
Ignition switch.
Radio chassis.
Tape player.
Go to
Pinpoint Test B.
Digital Audio Compact Disc Player Inoperative Does Not Operate Properly
Open fuse.
Circuitry.
CD player chassis.
Radio chassis.
Ignition switch.
Go to
Pinpoint Test C.
Digital Audio Compact Disc Player Display Blank Digital Audio Compact Disc Player Operates
Open fuse.
Circuitry.
Ignition switch.
CD player chassis.
Radio chassis.
Go to
Pinpoint Test D.
Noisy Reception AM and FM
Suppression equipment.
Circuitry.
Antenna.
Radio chassis.
Go to
Pinpoint Test E.
Noisy Reception—AM Only
Suppression equipment.
Circuitry.
Antenna.
Radio chassis.
Go to
Pinpoint Test F.
Noisy Reception—FM Only
Suppression equipment.
Circuitry.
Antenna.
Radio chassis.
Go to
Pinpoint Test G.
One or More Radio Speakers Distorted Not All Radio Speakers
Circuitry.
Speaker(s).
Radio chassis.
Radio amplifier.
Go to
Pinpoint Test H.
All Radio Speakers Distorted
Circuitry.
Radio chassis.
Radio amplifier.
Go to
Pinpoint Test I.
No Sound From One or More Radio Speakers— Not All Radio Speakers
Circuitry.
Radio speaker.
Radio chassis.
Radio amplifier.
Go to
Pinpoint Test J.
No Sound From All Radio Speakers
Circuitry.
Radio chassis.
Radio amplifier.
Radio speakers.
Go to
Pinpoint Test K.
Poor Sound Quality From One or More Radio Speakers— Not All Radio Speakers
Circuitry.
Radio chassis.
Amplifier.
Radio speakers.
Go to
Pinpoint Test L.
Poor Sound Quality From All Radio Speakers
Circuitry.
Amplifier.
Radio chassis.
Radio speakers
Go to
Pinpoint Test M.