Audio System - DaimlerChrysler LH New Yorker 1994 Electronic Service Manual

ANTENNAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
RADIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Audio Diagnostic Test Procedures
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DESCRIPTION
For operation of the factory installed standard and
optional radios with cassette or compact disc player,
refer to the Sound Systems Operating Instructions
Manual supplied with the vehicle.
The vehicles are shipped with fuse #13 removed
from the junction block. The fuse replaces the
ignition-off draw (IOD) connector. Fuse thirteen is a
ten amp fuse. When removed it prevents the battery
from discharging during storage. For specific wiring
and location, refer to Group 8W, Wiring Diagrams.
INTERFERENCE ELIMINATION
Some components used on the vehicles are equipped
with a capacitor to
interference/static.
Capacitors are mounted in various locations inter-
nal to the generator, instrument cluster and wind-
shield wiper motor.
Ground straps or wires are mounted from radio
chassis to instrument panel support structure, engine
to frame and engine cradle. These ground circuits
should be securely tightened to assure good metal to

AUDIO SYSTEM

CONTENTS
. . . . . . . . . . . . . 1
suppress radio frequency
page
SPEAKERS
RADIOS
INDEX
page
Interference Elimination
Radio Removal
metal contact. Ground straps conduct very small high
frequency electrical signals to ground and require
clean large surface area contact.
Radio resistance type spark plug cables in the high
tension circuit of the ignition system complete the
interference suppression. Faulty or deteriorated
spark plug wires should be replaced.
AUDIO DIAGNOSTIC TEST PROCEDURES
Whenever a radio malfunction occurs:
(1) Check fuses 2, 8, 9, 13 and circuit breaker 23 in
the junction block.
• Fuse 2, Ignition feed
• Fuse 8, Power amplifier
• Fuse 9, Illumination
• Fuse 13, Memory feed
• Circuit breaker 23, Power Antenna
(2) Verify that the radio wire harness is properly
connected to all connectors before starting normal
diagnosis and repair procedures. Refer to Audo Diag-
nostic Charts and/or Radi Connector Circuit Chart
(Fig. 1).
AUDIO SYSTEM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . 12
8F - 1
page
page