Chrysler 1997 Stratus Convertible LHD, Service Manual, Page: 299 / 1196

DIAGNOSTIC CONDITIONS
NOISE DISTORTION IN ALL SPEAKERS
Does the distortion occur through all operations:
•
AM and FM stations
•
Cassette tape
•
Compact disc
If not, check for radio interference, damaged tape
or disc that may be causing the distortion. Refer to
Sound Systems Operating Instructions in the Owners
Manual for cleaning procedures of the cassette tape
player.
•
Check battery voltage, for 11 Volts or more
•
Check amplifier connector for proper connection
•
If OK, check radio, refer to Radio Diagnosis
•
If OK, check circuit between the radio and the
amplifier. If OK, check between the amplifier and the
speakers.
•
If OK, replace amplifier
ELECTRICAL NOISE DISTORTION ONE
SPEAKER
•
Remove output signal connector from amplifier
and check for short to ground on the speaker with
the distortion. Refer to Group 8W, Wiring Diagrams
for the appropriate pin numbers.
•
If shorted to ground, disconnect speaker connec-
tor and recheck from the amplifier for short to
ground.
•
If still shorted to ground, repair wires. Not
shorted to ground, replace speaker.
•
Not shorted to ground, check speaker resistance
at amplifier connector for two to five ohms.
•
If resistance is OK, refer to Radio Diagnosis. If
radio checks OK, replace amplifier.
•
If resistance is less than two ohms, replace
speaker. If resistance is OK, repair wires
MECHANICAL NOISE DISTORTION
•
Check trim for loose parts, and speaker attach-
ments for buzzes, repair as necessary.
•
Remove speaker that is still connected and lis-
ten for distortion. If distortion remains, replace
speaker.
ONE SPEAKER NON-OPERATIVE
•
Remove connector from amplifier and check for
two to five ohms resistance to the non-operative
speaker. Refer to Group 8W, Wiring Diagrams for the
appropriate pin numbers.
•
If resistance is less than two ohms, test speaker
for resistance.
•
If OK, refer to Audio Diagnostic Test Procedures.
If not OK, replace speaker.
ALL SPEAKERS NON-OPERATIVE
•
Check radio for being ON, are the display lights
on
•
Radio not ON, refer to Radio Diagnosis
•
Check fuses, amplifier connectors and wires for
proper connection
•
Check for good ground
•
Check amplifier, for battery voltage and
ON/OFF voltage
(1) Battery voltage OK and NO voltage at the
ON/OFF terminal, check for short or open in the
ON/OFF circuit.
(2) ON/OFF voltage OK, and NO battery voltage,
check for short or open in battery circuit.
(3) Prior to replacing amplifier check fuse 5 in the
Junction Block. If not OK, replace fuse. If fuse blows
again disconnect amplifier B+ wire connector. Refer
to Group 8W, Wiring Diagrams for the proper connec-
tor.
(4) If fuse still blows the problem is not the ampli-
fier. If fuse does not blow replace the amplifier.
(5) If shorted or open circuit repair as necessary.
MANUAL ANTENNA
Check for short or open circuits with an ohmmeter
or continuity light once the antenna cable is discon-
nected from the radio. The radio coax cable has a
connector that connects behind the between passen-
ger seat and console.
(1) Continuity should be present between the
antenna base and radio end pin of antenna cable
plug (Fig. 1).
(2) No continuity should be observed or a very
high resistance of several megohms between the
ground shell of the connector and radio end pin.
(3) Continuity should be observed between the
ground shell of the connector and the mounting hard-
ware in the trunk right rear quarter panel
Fig. 1 Antenna Test Points
BASE TEST POINT
RADIO TEST POINT
JX
AUDIO SYSTEM 8F - 13
DIAGNOSIS AND TESTING (Continued)