MAZDA 626 1987 Workshop Manual

1 5 POWER DOOR LOCK
TROUBLESHOOTING

Terminal Voltage
WG 12V
B OV
Check the voltage
at GB
terminal
of
the power door lock relay with each switch condition.
Terminal Condition Voltage
GB Lock 12V GB Unlock OV

OK

Check the voltage
at R
and
G
terminal
of
the power door lock relay with each switch condition.
Terminal Condition Voltaae
R Lock OV R Unlock 12V
G Lock 12V G Unlock OV

Power door lock does not operate.

Check DOOR LOCK 30A fuse.

OK
NG
Short circuit.
Check the voltage
at
each terminal
of
the power door lock relay connector.

NG
Repair the harness. (Fuse box
to
relay, Relay
to
ground)

OK

Check the power door lock switch. Refer
to
page 15-107.

OK
NG
Replace the switch.

NG
Repair the harness. (Door lock switch
to
relay)

NG
Replace the door lock relay.

OK

Check the power door lock motor. Refer
to
page
15-107.

OK

Repair the harness. (Relay
to
each motors)

NG
Replace the door lock motor.

76G15X086
15—106

POWER DOOR LOCK 1 5
86U15X-173
INSPECTION
Power Door Lock Switch
1. Check for continuity of the switch with an
ohmmeter.

WG GB B
Lock
o O

Unlock
o O

O
O:
indicates continuity

2. If continuity is not as specified, replace the switch.
Power Door Lock Motor
1. Check operation of the door lock actuator when
the battery voltage is applied to the terminal.

Connecting
to
Door lock motor 12V ground Door lock motor
G R LOCK (Pull)
R G UNLOCK (Release)

2. If not, replace the door lock motor.
86U15X-174
15—107

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