Mazda 6. Manual — part 70
T–56
AUDIO AND NAVIGATION SYSTEM
Climate control unit (auto A/C only)
Terminal
Signal
1A
Blower motor feedback
1B
+5 V
1C
Blower motor control
1D
—
1E
Rear window defroster relay
1F
On-board diagnostic
1G
Wiper deicer relay
1H
—
1I
Sensor ground
1J
HNTI
1K
A/C ambient temperature sensor
1L
HNTI
1M
Cabin temperature sensor
1N
—
1O
Water temperature sensor
1P
A/C
1Q
Evaporator temperature sensor
1R
—
1S
Solar radiation sensor
1T
Hazard warning ground
1U
Potentiometer (air mix actuator)
1V
—
1W
Potentiometer (airflow mode actuator)
1X
Hazard warning switch
2A
Panel light control
2B
TNS
2C
Air mix actuator drive
(HOT
→
COLD)
2D
Air mix actuator drive
(COLD
→
HOT)
2E
Airflow mode actuator drive
(VENT
→
DEFROSTER)
2F
B+ (Power back up)
2G
Airflow mode actuator drive
(DEFROSTER
→
VENT)
2H
IG2
2I
Air intake actuator drive
(FRESH
→
RECIRCULATE)
2J
—
2K
Air intake actuator drive
(RECIRCULATE
→
FRESH)
2L
Ground
AUDIO AND NAVIGATION SYSTEM
T–57
T
T
Switch/Button/Indicator light Location
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A6E8124T002
No.
Switch/button/light
Related system
1
Hazard warning switch
Hazard warning
system
2
FM1 button
Audio system
3
FM2 button
Audio system
4
AM button
Audio system
5
CD button
Audio system
6
TAPE/MD button
Audio system
7
SEEK button (upper) (type A)
Audio system
SCAN button (type B)
Audio system
8
SEEK button (lower) (type A)
Audio system
AUTO-M button (type B)
Audio system
9
TA button (type A)
Audio system
SEEK button (upper) (type B)
Audio system
10
AUTO-M button (type A)
Audio system
SEEK button (lower) (type B)
Audio system
11
AF button (type A)
Audio system
12
PYT button (type A)
Audio system
13
POWER button (type A)
Audio system
AUDIO CONT button (type B)
Audio system
14
AUDIO CONT button (type A)
Audio system
POWER button (type B)
Audio system
15
Preset button “1”
Audio system
16
Preset button “2”
Audio system
17
Preset button “3”
Audio system
18
Preset button “4”
Audio system
19
Preset button “5”
Audio system
20
Preset button “6”
Audio system
21
Rear window defroster switch
(auto A/C)
Rear window
defroster system
A/C switch (manual A/C)
Air conditioner
system
22
REC/FRESH switch
Air conditioner
system
23
A/C switch (auto A/C)
Air conditioner
system
Rear window defroster switch
(manual A/C)
Rear window
defroster system
24
Climate control unit
(See
Air conditioner
system
25
Passenger-side air bag cut-off
indicator light
Air bag system
No.
Switch/button/light
Related system
T–58
AUDIO AND NAVIGATION SYSTEM
AUDIO UNIT
A6E812466900T02
Outline
•
The audio unit is composed of the base unit, upper module, and lower module.
•
Upper and lower module availability depends on vehicle grade.
•
The construction and operation of upper module and lower module are the same as that of current XEDOS 9,
MILLENIA (TA) models.
Structural View
.
Terminal Layout and Signal
•
(See
.)
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BASE UNIT
A6E812466900T03
Outline
•
The base unit controls the AM/FM tuner, upper/lower modules, and externally extended unit (e.g. CD changer).
•
An auto level control (ALC) function that controls speaker volume according to vehicle speed has been
adopted.
•
For drive information system (DIS) equipped vehicles, a CAN communication control circuit is included in the
base unit. The base unit receives, using the CAN system, the DIS display signal from the instrument cluster,
and converts it to a signal sent to the information display. (See
Structural View
End Of Sie
A6E8124T001
1
Base unit
2
Upper module (CD player or CD changer)
3
Lower module (cassette deck or MD player)
4
Cover (without upper module)
A6E8124T003
1
Base unit
AUDIO AND NAVIGATION SYSTEM
T–59
T
T
AUTO LEVEL CONTROL (ALC) FUNCTION
A6E812466900T04
Function
•
Adjusts the audio volume so that the sound is balanced against wind and road noise while driving.
Operation
•
The audio unit changes the volume automatically based on the vehicle speed signal sent from the instrument
cluster.
.
•
The ALC function is divided into four modes, and can be used effectively to match the driving conditions.
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ON-BOARD DIAGNOSTIC SYSTEM (AUDIO SYSTEM)
A6E812466900T05
Outline
•
The on-board diagnostic system has a self-diagnostic function and diagnostic assist function to help
technicians locate malfunctions.
Self-diagnostic Function
Malfunction detection function
•
The malfunction detection section detects malfunctions occurring in the system.
A6E8124T021
1
Higher vehicle speed
2
Lower vehicle speed
3
Audio unit (base unit)
4
Vehicle speed signal
5
ALC circuit
6
Power amplifier
7
Speaker
8
Higher volume
9
Normal volume
Mode
Condition
ALC function cancel
Outside road noise low
Outside road noise rather high
Outside road noise high
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