1996 Bronco/F-Series

Section 15-00: Audio Systems, Service

1996 F-150, F-250, F-350, F-Super Duty and Bronco Workshop Manual

DIAGNOSIS AND TESTING

Symptom Charts

Use Rotunda 73 Digital Multimeter 105-R0051 or equivalent to perform electrical pinpoint tests.
SOUND SYSTEM FUNCTION
Condition Possible Source Action

Radio Chassis Inoperative/Does Not Operate Properly
Open fuse.
Circuitry.
Ignition switch.
Radio chassis.
GO to Pinpoint Test A.

Radio Chassis Display Blank — Radio Chassis Operates
Open fuse.
Circuitry.
Radio chassis.
Ignition switch.
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 C.

Radio Chassis/Tape Player Display Blank — Radio Chassis/Tape Player Operates
Open fuse.
Circuitry.
Radio chassis.
Ignition switch.
Tape player.
GO to Pinpoint Test D.

Compact Disc Radio Inoperative/Does Not Operate Properly
Open fuse.
Circuitry.
Radio chassis.
Digital audio compact disc radio.
Ignition switch.
GO to Pinpoint Test E.

Compact Disc Radio Display Blank but Compact Disc Radio Operates
Open fuse.
Circuitry.
Ignition switch.
Radio chassis.
Digital audio compact disc radio.
GO to Pinpoint Test F.

Tape Player Only Inoperative/Does Not Operate Properly
Open fuse.
Circuitry.
Radio chassis.
Tape player.
Ignition switch.
GO to Pinpoint Test G.

SOUND SYSTEM QUALITY
Condition Possible Source Action

Noisy Reception, AM and FM
Suppression equipment.
Circuitry.
Antenna.
Radio chassis.
GO to Pinpoint Test H.

Noisy Reception, AM Only
Suppression equipment.
Circuitry.
Antenna.
Radio chassis.
GO to Pinpoint Test J.

Noisy Reception, FM Only
Suppression equipment.
Circuitry.
Antenna kit.
Radio chassis.
GO to Pinpoint Test K.

One or More Radio Speakers Distorted, Not All Radio Speakers
Circuitry.
Radio speakers.
Radio chassis.
Radio amplifier.
GO to Pinpoint Test L.

All Radio Speakers Distorted
Circuitry.
Radio chassis.
Radio amplifier.
GO to Pinpoint Test M.

No Sound from One or More Radio Speakers, Not All Radio Speakers
Circuitry.
Radio speakers.
Radio chassis.
Radio amplifier.
GO to Pinpoint Test N.

No Sound from All Radio Speakers
Circuitry.
Radio chassis.
Radio amplifier.
Radio speakers.
GO to Pinpoint Test P.

Poor Sound Quality from One or More Radio Speakers, Not All Speakers
Circuitry.
Radio chassis.
Radio amplifier.
Radio speakers.
GO to Pinpoint Test Q.

Poor Sound Quality from All Radio Speakers
Circuitry.
Radio amplifier.
Radio chassis.
Radio speakers.
GO to Pinpoint Test R.

Condition	Possible Source	Action
Radio Chassis Inoperative/Does Not Operate Properly	Open fuse. Circuitry. Ignition switch. Radio chassis.	GO to Pinpoint Test A.
Radio Chassis Display Blank — Radio Chassis Operates	Open fuse. Circuitry. Radio chassis. Ignition switch.	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 C.
Radio Chassis/Tape Player Display Blank — Radio Chassis/Tape Player Operates	Open fuse. Circuitry. Radio chassis. Ignition switch. Tape player.	GO to Pinpoint Test D.
Compact Disc Radio Inoperative/Does Not Operate Properly	Open fuse. Circuitry. Radio chassis. Digital audio compact disc radio. Ignition switch.	GO to Pinpoint Test E.
Compact Disc Radio Display Blank but Compact Disc Radio Operates	Open fuse. Circuitry. Ignition switch. Radio chassis. Digital audio compact disc radio.	GO to Pinpoint Test F.
Tape Player Only Inoperative/Does Not Operate Properly	Open fuse. Circuitry. Radio chassis. Tape player. Ignition switch.	GO to Pinpoint Test G.

Condition	Possible Source	Action
Noisy Reception, AM and FM	Suppression equipment. Circuitry. Antenna. Radio chassis.	GO to Pinpoint Test H.
Noisy Reception, AM Only	Suppression equipment. Circuitry. Antenna. Radio chassis.	GO to Pinpoint Test J.
Noisy Reception, FM Only	Suppression equipment. Circuitry. Antenna kit. Radio chassis.	GO to Pinpoint Test K.
One or More Radio Speakers Distorted, Not All Radio Speakers	Circuitry. Radio speakers. Radio chassis. Radio amplifier.	GO to Pinpoint Test L.
All Radio Speakers Distorted	Circuitry. Radio chassis. Radio amplifier.	GO to Pinpoint Test M.
No Sound from One or More Radio Speakers, Not All Radio Speakers	Circuitry. Radio speakers. Radio chassis. Radio amplifier.	GO to Pinpoint Test N.
No Sound from All Radio Speakers	Circuitry. Radio chassis. Radio amplifier. Radio speakers.	GO to Pinpoint Test P.
Poor Sound Quality from One or More Radio Speakers, Not All Speakers	Circuitry. Radio chassis. Radio amplifier. Radio speakers.	GO to Pinpoint Test Q.
Poor Sound Quality from All Radio Speakers	Circuitry. Radio amplifier. Radio chassis. Radio speakers.	GO to Pinpoint Test R.