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Trouble Shooting Guide
· Before you consult this listing, make sure the vehicle s electrical system is working properly by verifying that other electrical items (e. g. headlights,
Windows, etc.) still function correctly.
SYMPTOM
No audio
Distorted audio
Audio level low
Audio lacks
External fuse blowing
Whining noise on audio
with engine running
Ticking noise on audio
with engine running
PROBABLE CAUSE
Low or N.C. remote turn-on connections
Blown fuse
Power wires not connected
Blown or non-speakers connected
Input sensitivity not set properly or damaged
speaker cones
Low turn-on voltage
Mute circuits is on head unit
Speakers wired with wrong polarity, causing
cancellation of bass frequencies
Incorrect wiring or short circuit
Amplifier is picking up alternator noise
Amplifier is peaking up radiated spark noise
Fig.5.
Check remote turn-on voltage at amp and head unit
Replace with new fast-blow fuse
Check butt splices or solder joints;
Check ground and battery connections
Use VOM or DVM to measure speaker coil impedance; check speaker
wiring connections
See adjustment procedure and check each ste; inspect each speaker for
damage and repair or replace suspected component
Refer to head unit owner s manual
Check electrical system for low voltage;
Check ground connection
Check polarity of wires from amplifiers to each speak as defined by
the system design;
Check battery voltage at amplifier during operation
Refer to electrical installation and check each installation step
Install a line noise filter on the head unit s power wire;
Check alternator routing diodes or voltage regulator for proper
operation. Check all grounds, check battery voltage, check RCA
cables
Check RCA audio cable; Install an in-line noise filter on the head
unit s power wire, check spark plug wires
8
SOLUTION
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