MAZDA 626 1987 Workshop Manual

1 5 TURN AND HAZARD LIGHT
TROUBLESHOOTING
Note
Check the TURN 15A fuse in the fuse box before troubleshooting.

Terminal Voltage
H (BG) 12V

OK

Check the voltage between each terminal
of
flasher unit connector and
a
body ground with each con-dition.
Terminal Condition Voltage
A(B) Any time OV
E (BR) Turn switch
is
Riaht 12V
F (GY) Turn switch
is
left 12V
H (Br) Anv time 12V

OK
Turn function does not operate.

Check the flasher unit. Refer
to
page 15—47

OK

Check the turn signal switch. Refer
to
page 15—14

OK
NG
NG

Check the voltage
at H
(BG) terminal
of
the combina-tion switch (Turn).
Replace the unit.
Replace the switch.

NG
Repair harness. (Fuse box
to
combination switch)
Repair harness.

NG

Terminal Wiring harness
A (B) Flasher unit
to
ground
E (BR) Flasher unit
to
combination switch
F (GY) Flasher unit
to
combination switch
H (Bri Fuse box
to
Flasher unit
Check the lights and wiring harness (Each bulb
to a

body ground)

NG
Replace the lights
or
repair the wiring harness.

OK

Repair harness. (Flasher unit
to
each bulb)
76G15X-045
Hazard function does not operate. (Turn func-tion is normal)

Check the hazard switch. Refer
to
page 15—19,
20
OK
NG
Replace the switch.
Check the voltage
at
each terminal
of
the hazard
switch connector.
Terminal Voltage
B (GR) 12V
D (B) OV

15-46
NG
Repair the wiring harness. (Flasher unit
to
hazard
switch, hazard switch
to
ground)

OK

Check the flasher unit. Refer
to
page 15—47
NG
Replace the unit.

76G15X-046

TURN AND HAZARD LIGHT 1 5
Rapid flashing

Check the lights and wiring harness between each
bulb and
a
body ground (rapid flashing side).

86U15X-081
76G15X-047
INSPECTION
Hazard and Flasher Unit
For LHD
1. Check for continuity between terminals of the haz-
ard and flasher unit.

Terminal Continuity Terminal Continuity Terminal Continuity
a-c X d-e X f-g X
a-d X d-f X f-h X
a-e O d-g X g-a X
a-f O d-h X g-c X
a-g X e-a X g-d X
a-h X e-c X g-e X
c-a
o
e-d X 9-f X
c-d
o
e-f X g-h X
c-e
o
e-g X h-a
O

c-f
o
e-h X h-c
o

c-g
o
f-a X h-d
o

c-h
o
f-c X h-e
o

d-a X f-d X h-f
o

d-c X f-e X h-g
o

O: Indicates continuity
X: No
continuity

Note
Set the tester to X1000Q range.
2. If continuity is not as specified, replace the switch.
For RHD
1. Apply 12V to the "B" terminal of the unit and con-
nect "E" terminal to the ground.
2. Confirm that the two paralleled lamps come on
when connected between the "L" terminal and the
ground.
Caution
Do no reverse the polarity of the electrical
source to the terminals.
76G15X048
15—47

1 5 STOP LIGHT
STOP LIGHT
STRUCTURAL VIEW
86U15X-083
1 Stop light 3- St°P and tail ''9ht checker
2. Stop light switch
15-48

STOP LIGHT 1 5
CIRCUIT DIAGRAM
TROUBLESHOOTING
Note
Check the STOP 15A fuse in the fuse box before troubleshooting.
86U15X-085
15—49

1 5 STOP LIGHT
Both side stop lights do not illuminate when brake on.

Check the voltage
at A
(GW) terminal
of
stop light switch connector.
NG

Terminal Voltage
A (GW) 12V
Repair harness. (Fuse box
to
stop light switch)

OK

Check the stop light switch. Refer
to
page 15—51
NG
Replace the switch.

OK

Check the voltage between each terminal
of
the stop and tail light checker connector and
a
body ground when brake
on.

Terminal Voltage
B(B) OV
C (WG) 12V
NG Repair the wiring harness. (Stop light switch
to
stop and tail light checker, stop and tail light checker
to
body ground)

OK
OK

Repair the wiring harness. (Stop and tail light checker to bulb, bulb
to
body ground)

76G15X-049
Light Checker
1. Check for continuity between terminals of the stop
and tail light checker.
Stop and tail light checker (except West
Germany)
3 c £
r -r •
I i f 1 3
76G15X050

Terminal Continuity Terminal Continuity Terminal Continuity
i + i -
Continuity
+
1
-
Continuity
i + i -
Continuity
a-b
O
c-d
X
f-a
X

a-c
O
c-f
o
f-h
0

a-d
X c-g X g-a o

a-f
o
c-h
o
g-b
o

a-a
X
d-a
o a-c o

a-h
o
d-b
o
g-d
X

b-a
o
d-c
0
a-f
o

b-c
o
d-f
o
g-h
o

b-d
X
d-g
X
h-a
o

b-f
o
d-h
o
h-b
o

b-g
X
f-a
0
h-c
o

b-h
o
f-b
o
h-d
X

c-a
0
f-c
o
h-f
o

c-b
o
f-d
X
h-a
X

O: Indicates continuity
X: No
continuity

15-50

STOP
LIGHTS
1
5
Stop light checker
9 c a
d b
Tail light checker
c a
J f d b
Stop light checker (for West Germany)
76G15X-051

Terminal Continuity Terminal Continuity Terminal Continuity
+ -
Continuity
+ -
Continuity
+ -
Continuity
a-b O c-d X
X f:3__ X
a-c 0 c-f
X
X f-h X
a-d X c-g X g-a X
a-f X c-h X g-b X
a-g X d-a O
a-c
X
a-h X d-b
o
g-d X
b-a
o
d-c
o g-f
X
b-c
o
d-f X g-h X
b-d X d-g X h-a X
b-f X d-h X h-b X
b-g X f-a X h-c X
b-h X f-b X h-d X
c-a
0
f-c X h-f X
c-b
0
f-d X h-g X

Tail light checker (for West Germany)

Terminal Continuity Terminal Continuity Terminal Continuity
+ -
Continuity
+ i -
Continuity
+ -
Continuity
a-b
O
c-i X h-d X
a-c
0
oj
O
h-f
O

a-d
o
d-a
o
h-i X
a-t X d-b
o
h-j X
a-h X d-c
o i-a o

a-i X d-f X
i-b o

a-j
o
d-h X
i-c o

b-a
o
d-i X
i-d o

b-c
o
d-j
o
i-f X
b-d
o
f-a X i-h X
b-f X f-b X
i-j o

b-h X f-c X
j-a o

b-i X f-d X
j-b o

b-j
o
f-h
o j-c o

c-a
o
f-i X J-d
o

c-b
o
f-j X J-f X
c-d
o
h-a X i-h X
c-f X h-b X j-i X
c-h X h-c X
—

O: Indicates continuity
X: No
continuity

Note
Set the tester to x1000ft range.
2. If continuity is not as specified, replace the light
checker.
Stop Light Switch
1. Disconnect the stop light switch connector.
2. Check for continuity between terminals of the
switch.

———Terminal Position
~
•———____ a b
Pedal deoressed
Pedal released

86U15X-088
O
O :
Indicates continuity

15—51

15 HORN
HORN
STRUCTURAL VIEW
86U15X-089
CIRCUIT DIAGRAM
86U15X-090
15—52

HORN 15
TROUBLESHOOTING
Horn does not sound.
< >...For West Germany
OK
76G15X-052
INSPECTION
Horn Relay
Check for continuity between terminals of the relay.

Connectina
to
Terminal
12V Ground a b c d

— —
—O

a
b 0— —0
O—O: indicates continuity

86U15X-092
15—53

15 HEADLIGHT
HEADLIGHT
CIRCUIT DIAGRAM
TROUBLESHOOTING
Leaded Fuel Model
76G15X-055
15-54

HEADLIGHT 15
Unleaded fuel model
OK

Check
for
12V
at
"RB" wire (when low and/or "RW" wire (when high)
of
combination switch
6
pin con-nector

NG
Check
for
12V
at
"RB" wire (when low and/or "RW" wire (when high)
of
combination switch
6
pin con-nector

NG
Replace combination switch
Check
for
12V
at
"RB" wire (when low and/or "RW" wire (when high)
of
combination switch
6
pin con-nector

OK

Check the voltage between each terminal
of
the headlihgt relay and
a
body ground.
Terminal Voltage
a (RW) 12V
c(R) 12V
NQ Repair harness
(a
terminal
—
combination switch
to
headlight relay,
c
terminal
—
main fuse
to
headlight relay)

OK
OK —
Replace the bulb(s)

76G15X-053
INSPECTION
Headlight Relay
Check for continuity between terminals of the relay.

Connecting
to
Terminal
12V Ground a b c d

— —
O— —O
a b O— —-O
O—O: indicates continuity

76G15X-054
15—55