Page text (OCR transcript)
BE–107
BODY ELECTRICAL SYSTEM – AUDIO SYSTEM
26 | Amplifier | NO POWER COMING IN
Is + B applied to power amplifier?
No → Power amplifier faulty.
Yes
Is ACC applied to power amplifier?
No → Power amplifier.
Yes
Is there continuity in wire harness?
(Radio receiver to power amplifier)
No → Wire harness faulty.
Yes
Check if GND to body is OK.
No → GND faulty.
Yes
Radio receiver assembly faulty.
27 | Amplifier | POWER COMING IN, BUT POWER AMPLIFIER NOT OPERATING
Is power amplifier operating normally?
No → Power amplifier faulty.
Yes
Is there continuity in speaker wire harness?
No → Speaker wire harness faulty.
Yes
Temporarily install another speaker.
Functions OK?
Yes → Speaker faulty.
No
Power amplifier faulty.
28 | Amplifier | EITHER SPEAKER DOES NOT WORK
Is power amplifier operating normally?
Yes → Radio receiver assembly faulty.
No
Is hiss produced by non–functioning speaker?
Yes → Radio receiver assembly faulty.
No
Is there continuity in speaker wire harness?
No → Speaker wire harness faulty.
Yes
Temporarily install another speaker.
Functions OK?
Yes → Speaker faulty.
No
Power amplifier faulty.
