you understand and save you concern about these “ap-
parent” malfunctions, you must understand a point or
two about the transmission and reception of radio sig-
nals.
Two Types of Signals
There are two basic types of radio signals... AM or
Amplitude Modulation, in which the transmitted sound
causes the amplitude, or height, of the radio waves to
vary... and FM or Frequency Modulation, in which the
frequency of the wave is varied to carry the sound.
Electrical Disturbances
Radio waves may pick up electrical disturbances during
transmission. They mainly affect the wave amplitude,
and thus remain a part of the AM reception. They
interfere very little with the frequency variations that
carry the FM signal.
AM Reception
AM sound is based on wave amplitude, so AM reception
can be disrupted by such things as lightning, power lines
and neon signs.
FM Reception
Because FM transmission is based on frequency varia-
tions, interference that consists of amplitude variations
can be filtered out, leaving the reception relatively clear,
which is the major feature of FM radio.
NOTE:
The radio, steering wheel radio controls (if
equipped), and 6 disc CD/DVD changer (if equipped)
will remain active for up to 90 seconds after the ignition
switch has been turned off, depending upon the acces-
sory delay setting. Opening a vehicle front door will
cancel this feature.
UNDERSTANDING YOUR INSTRUMENT PANEL
211
4
Summary of Contents for 2008 Pacifica
Page 2: ......
Page 5: ...INTRODUCTION 5 1 ...
Page 8: ......
Page 110: ...110 UNDERSTANDING THE FEATURES OF YOUR VEHICLE ...
Page 111: ...UNDERSTANDING THE FEATURES OF YOUR VEHICLE 111 3 ...
Page 112: ...112 UNDERSTANDING THE FEATURES OF YOUR VEHICLE ...
Page 184: ...INSTRUMENT PANEL AND CONTROLS 184 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Page 185: ...BASE INSTRUMENT CLUSTER UNDERSTANDING YOUR INSTRUMENT PANEL 185 4 ...
Page 186: ...PREMIUM INSTRUMENT CLUSTER 186 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Page 270: ......
Page 302: ...302 STARTING AND OPERATING ...
Page 366: ......
Page 370: ...3 8L ENGINES Engine Compartment 3 8L Engines 370 MAINTAINING YOUR VEHICLE ...
Page 371: ...4 0L ENGINES Engine Compartment 4 0L Engine MAINTAINING YOUR VEHICLE 371 7 ...
Page 426: ......
Page 436: ......
Page 437: ...INDEX 10 ...