audio MAZDA 626 1987 Workshop Manual

15
BODY ELECTRICAL SYSTEM
INTRODUCTION 15- 2 HOW TO USE THIS SECTION 15— 2 ELECTRICAL TROUBLESHOOTING TOOLS 15- 2 PRECAUTION 15— 3 ELECTRICAL SYMBOLS 15- 6 LOCATION OF UNIT, RELAY AND SWITCH 15- 7
STRUCTURAL VIEW 15— 7 MAIN FUSE BLOCK 15- 9 STRUCTURAL VIEW 15— 9 REPLACEMENT 15—10 IGNITION SWITCH 15—10
INSPECTION 15— 10 JOINT BOX AND FUSE 15—11
STRUCTURAL VIEW 15—11
COMBINATION SWITCH 15-12 STRUCTURAL VIEW 15- 12 INSPECTION 15— 13 CLUSTER SWITCH 15—17 STRUCTURAL VIEW 15— 17 INSPECTION OF ROCKER TYPE 15— 19
INSPECTION OF PUSH TYPE 15— 20 METER 15— 22 STRUCTURAL VIEW 15— 22 DISASSEMBLY AND ASSEMBLY 15— 23
TROUBLESHOOTING 15— 24 INSPECTION OF ANALOG METER .... 15— 26 INSPECTION OF DIGITAL METER 15— 27
INSPECTION OF METER SENDER 15— 29 WARNING LIGHT AND SENDER 15- 31 CIRCUIT DIAGRAM 15— 31
TROUBLESHOOTING 15- 32 INSPECTION 15— 39 CENTRAL PROCESSING UNIT 15— 41 STRUCTURAL VIEW 15— 41 FUNCTIONS 15- 41 CIRCUIT DIAGRAM 15— 42 REMOVAL AND INSTALLATION 15— 43
ON-VEHICLE INSPECTION 15- 43 TURN AND HAZARD LIGHT 15- 44 STRUCTURAL VIEW 15— 44 CIRCUIT DIAGRAM 15— 45
TROUBLESHOOTING 15- 46 INSPECTION 15— 47 STOP LIGHT 15— 48
STRUCTURAL VIEW 15— 48 CIRCUIT DIAGRAM 15— 49
TROUBLESHOOTING 15- 49 INSPECTION 15- 50 HORN 15— 52 STRUCTURAL VIEW 15— 52 CIRCUIT DIAGRAM 15— 52 TROUBLESHOOTING 15— 53 INSPECTION 15-53 HEADLIGHT 15— 54 CIRCUIT DIAGRAM 15— 54 TROUBLESHOOTING 15— 54 INSPECTION 15— 55 PANEL LIGHT CONTROL 15— 56 CIRCUIT DIAGRAM 15— 56
TROUBLESHOOTING 15_ 5fi INSPECTION 17 REAR WINDOW DEFROSTER ..i".'! 15- 58
STRUCTURAL VIEW 15-5fl CIRCUIT DIAGRAM 15_ «
TROUBLESHOOTING '.. 15_ 59
INSPECTION
15-60 POWER WINDOW 15-61 STRUCTURAL VIEW il_ «1 CIRCUIT DIAGRAM 15_ 62 TROUBLESHOOTING 15- «3 INSPECTION 15-66 REMOTE CONTROL MIRROR ........15- 69 STRUCTURAL VIEW 15-69 CIRCUIT DIAGRAM 15_ 69
TROUBLESHOOTING 15_ 70 INSPECTION 15_ 70 REAR WINDOW WIPER 15_ 71 STRUCTURAL VIEW 15-71 CIRCUIT DIAGRAM .'.'.'...' 15_ 72
TROUBLESHOOTING 15-73 INSPECTION 15-75 WINDSHIELD WIPER 15-76 STRUCTURAL VIEW ' ' 15— 7e
DISASSEMBLY AND ASSEMBLY OF WIPER MOTOR 15_ 76 CIRCUIT DIAGRAM 15-77 TROUBLESHOOTING " " 15— 70 INSPECTION 15-81 CRUISE CONTROL SYSTEM 15- 82 STRUCTURAL VIEW 15-82 CIRCUIT DIAGRAM 15-83 ON-VEHICLE INSPECTION \..\m 15- 84 INSPECTION 15-87 SLIDING SUNROOF 15-89 STRUCTURAL VIEW 15_ 89 CIRCUIT DIAGRAM i5_ 90
TROUBLESHOOTING 15— 91 INSPECTION 15_ 90 AUTO ADJUSTING SUSPENSION 15— 94
CIRCUIT DIAGRAM 15- 94
TROUBLESHOOTING GUIDE 15— 94
TROUBLESHOOTING 15— 94
INSPECTION 15-104
POWER DOOR LOCK 15-105
STRUCTURAL VIEW 15-105
CIRCUIT DIAGRAM 15-105
TROUBLESHOOTING 15-106 INSPECTION 15-107 AUDIO SYSTEM " 15_108 OUTLINE OF AUDIO SYSTEM 15-108 REAR CONNECTOR VIEW 15-109 ADJUSTMENT (MTR) 15—114 POWER ANTENNA 15-114 HEATER J
STRUCTURAL VIEW 15-116 AIR FLOW AT EACH MODE 15-117 RATE OF AIR FLOW 15-119 LEVER CONTROL TYPE 15-120 LOGICAL CONTROL
TYPE
15—121 LOGICON SWITCH 15—123
76G15X-001

1 5 AUDIO SYSTEM
AUDIO SYSTEM
OUTLINE OF AUDIO
SYSTEM 1
AM RADIO (MTR)
SYSTEM 2
AM/SW RADIO (MTR)
o o o
(system 1 and 2)
SYSTEM 3
AM RADIO (MTR) + CASSETTE TAPE PLAYER
SYSTEM 4
AM/SW RADIO (MTR) + CASSETTE TAPE PLAYER
o1— |noo
kL .=. _J>
in i ii o
(0)(0)
issa
(system 3 and 4)
SYSTEM 5
AM/FM RADIO (MTR)
(system 5)
SYSTEM 6
AM/FM RADIO (MTR) + CASSETTE TAPE PLAYER
<1
—<
3
R/Front
L/Fronl
R/Front
L/Front
R/Fronl
L/Front
H/Fianl
<] L/Fronl

—|SW x z\ 1—<] R/Rsta

U]
POWER AMP
URear
(system 6)
SYSTEM 7
AM/FM MULTIPLEX RADIO (ETR) + CASSETTE TAPE PLAYER + GRAPHIC EQUIALIZER
ii hi 11 II II
OQ »m—•! 1 1 Ifal OQ
(|_ C_1
JI l_J 1|
n- n TUT4HHH]
. truij-ij-uTHH
R/Front
UFront
POWER AMP 25W x 2
—R/Rear
L/Raar
(system 7)
76G15X-021
15—108

AUDIO SYSTEM 1 5
SYSTEM 8
AM/FM/LW RADIO WITH CASSETTE TAPE PLAYER
SYSTEM 9 AM/FM/SW RADIO WITH CASSETTE TAPE PLAYER
MEMO
lego n
TUNE SEEK tran 0 © O Q---M
METAL CD FADJfcBAL
O
•ulliSW VOL
TSL TRE-^SASS
ff— <] J AUTO REVERSE ZD r> r> / STOP EJECT
OI JO
(system 8 and 9)
-(t] Front left
-(t]Front right
-(I] Rear left
-£(]Rear right
REAR CONNECTOR VIEW
AM/SW or AM RADIO (MTR)
nn rr^
in to
L_J
O o w
I I
d
a Speaker-L ©
b Spsaker-L f)
c Speaker-R (+)
d Spaaker-R (p)
a
b Illumination
c Battery (?)
76G15X-022
15-109

15 AUDIO SYSTEM
AM/FM MULTIPLEX RADIO (ETR)
To front speaker
To cassette deck or equalizer
a Speaker-L © a Motor antenna (Earthed when radio is ON) b Speaker-L ©
a Motor antenna (Earthed when radio is ON)
c Speaker-R © b Illumination
d Speaker-R © a Battery © c ACC ©
1 Output-L ©
To AMP 2 Input-L ©
1 Output-F-R © 3 ACC ©
2 Battery © 4 Illumination
3 Output-F-L © 5 Signal ground
4 Output-F-R © 6 Input-R ©
5 Output-F-L © 7 Output-R ©
6 Ground 8 Not used
E Shield ground E Shield ground
To AMP To cassette deck
or equalizer
56G15X085
AM/FM MULTIPLEX RADIO (MTR)
a Antenna relay (Earth when radio is ON)
b Illumination
c Battery (ACC)
To front speaker
c a
1 Output-R-R © Output-F-R ©
2 ACC © ACC ©
3 Output-R-L © Output-F-R ©
4 Output-R-R © Output-F-R ©
5 Output-R-L © Output-F-L ©
6 Ground Ground
E Shield ground Shield ground
a Speaker-L ©
b Speaker-L ©
c Speaker-R ©
d Speaker-R ©
To rear AMP To front AMP
Not used
(Never connect
back-up line)
1 Output-L ©
2 Input-L ©
3 ACC ©
4 Illumination
5 Signal ground
6 Input-R ©
7 Output-R ©
8 Not used
E Shield ground
To cassette
deck
56G15X-086
15-110

AUDIO SYSTEM 1 5
CASSETTE DECK
To radio
a Antenna relay (Earthed when radio is ON)
b Illumination
c Battery (ACC) ©
Battery (ACC)©
. • Q-
fi0
m
®
jqj
To radio
/
1 Input-L ©
2 Output-L ©
3 Battery (ACC) ©
4 Not used
5 Signal ground
6 Output-R ©
7 Input-R ©
8 Not used
E Shield ground
»
B /1 ^C
a Antenna relay (Earthed when radio is ON)
b Illumination
c Battery (ACC) ©

0

56G15X-088
CASSETTE DECK (SYSTEM 3 AND 4)
To radio
a Power antenna
b Illumination
c Battery (ACC) jm
a Not used
b Not used
c Speaker ©
d Speaker ©
To radio
JHL
a Speaker-L ©
b Speaker-L ©
c Speaker-R ©
d Speaker-R ©
To rear
Blue color
V m.
"T*.
a Power antenna
b Illumination
c Battery (ACC) ©
56G15X-089
15—111

1 5 AUDIO SYSTEM
GRAPHIC EQUALIZER
1 INPUT-L ©
2 OUTPUT-L ©
3 BATTERY (ACC) ©
4 ILLUMINATION
5 SIGNAL GROUND
6 OUTPUT-R ©
7 INPUT-R ©
6 NOT USED
E SHELD GROUND
1 NOT USED
2 INPUT-L ©
3 BATTERY (ACC) ©
4 NOT USED
5 SIGNAL GROUND
6 INPUT-R ©
7 NOT USED
8 NOT USED
E SHIELD GROUND
To radio
6) (8)
To cassette deck
r
56G15X-091
AM/FM/SW RADIO WITH CASSETTE TAPE PLAYER
3 AfTtp coot
<13 2 VI

76G15X-023
15—112

AUDIO SYSTEM 15
AM/FM/LW RADIO WITH CASSETTE TAPE PLAYER
S Shield ground
76G15X-024
15—113

1 5 AUDIO SYSTEM
ADJUSTMENT (MTR)
Antenna adjustment
Use the following adjustment procedure to obtain op-
timum antenna and radio reception sensitivity.
1. Extend the antenna fully.
2. Set the ignition key to ACC.
3. Turn on the radio, and set it to AM reception.
4. Tune in a distant station with a weak signal at
around 1400 kHz. If such a station cannot be
found, use static to make the adjustment.
5. Turn the antenna trimmer adjustment screw to the
left and right to find the maximum sensitivity (of ei-
ther the broadcast or the static).
Note
If there is no change in the sensitivity, either
the tuned signal is too strong, or there is an
antenna malfunction or broken wire.
POWER ANTENNA
STRUCTURAL VIEW
1. Antenna motor
2. Antenna
FM M >08 ST ' I' tl -3-lx

0


[ AM s» TO too"I30"IM
J
A
FM | FM
B
I FH | fH
M FM
III
56G15X-106
15-114

AUDIO SYSTEM 1 5
Power Antenna Circuit
86U15X-194
inspection Of Power Antenna Relay
1. Check the voltage at each terminal of the relay con-
nector harness side with each condition.

Terminal Condition Voltage
LW Ignition switch ACC 12V
BY Ignition switch
ON
12V
LgW Ignition switch ACC and radio
power switch
ON
OV
LR Any time 12V

76G15X-096
86U15X-196
If not, repair the harness.
2. Turn the ignition switch on, and check the opera-
tion of the power antenna with each condition.

Condition Antenna operation
GW wire
is
connected
to a

body ground Rises
GW wire
is
not connected to
a
body ground Goes down

If the power antenna does not operate, replace the
power antenna relay or power antenna motor.
15—115