Either Speaker Does Not Work - Toyota Hilux Surf 1993 Owner's Manual

Radio
[R] Radio [S] Radio + Tape Player [U] Radio–Tape Player (Built–in Power Amplifier)
[P] Radio–Tape Player (Separate Power Amplifier)
[S][U][P]
Is tape player operating normally?
[R]
[R][S][U][P]
Is hiss produced by non–functioning speaker?
Is there continuity in speaker wire harness?
Yes
Temporarily install another speaker. Functions
OK?
Radio faulty.
Radio assembly faulty.
Radio assembly faulty. Recheck sys–
tem after repair.
BODY ELECTRICAL SYSTEM

EITHER SPEAKER DOES NOT WORK

Yes
Yes
Yes
– Audio System
Radio faulty.
Radio assembly faulty.
Radio faulty.
Radio assembly faulty.
Radio assembly faulty. Recheck system
after repair.
Speaker wire harness faulty.
Speaker faulty.
BE–95