MAZDA 626 1987 Workshop Manual

1 5 AUTO ADJUSTING SUSPENSION (AAS)
Condition Output pattern Malfunction Flow chart
No.
A

Set steering wheel
in

straight ahead position

0.5 sec
4.4V
n\/
2 sec

Vehicle speed sensor
or

wiring harness (Meter
—

Control unit)
AAS-1
Refer
to

page
15—98

A

Set steering wheel
in

straight ahead position
Vehicle speed sensor
or

wiring harness (Meter
—

Control unit)
AAS-1
Refer
to

page
15—98

A

Set steering wheel
in

straight ahead position

0.5 secO.!
4.4V
nv
i sec
2
sec
— <—i i— -
Steering wheel angle sen-
sor
or
wiring harness (An-
gle sensor
—
Control unit)
AAS-2
Refer
to

page
15-98

A

Set steering wheel
in

straight ahead position

-
Steering wheel angle sen-
sor
or
wiring harness (An-
gle sensor
—
Control unit)
AAS-2
Refer
to

page
15-98

A

Set steering wheel
in

straight ahead position

nv

Normal operation or wiring
harness (Fuse box
—
Con-
trol unit, control unit
—

Body ground)
AAS-3
Refer
to

page
15-99

A

Set steering wheel
in

straight ahead position
Normal operation or wiring
harness (Fuse box
—
Con-
trol unit, control unit
—

Body ground)
AAS-3
Refer
to

page
15-99

B

Turn the steering wheel
right and left

0.5 sec
4.4V
n\/
2 sec
—
Vehicle speed sensor
or

wiring harness (Meter
—

Control unit)
AAS-1
Refer
to

page
15-98

B

Turn the steering wheel
right and left
Vehicle speed sensor
or

wiring harness (Meter
—

Control unit)
AAS-1
Refer
to

page
15-98

B

Turn the steering wheel
right and left

0.5 sec 0
4.4V""-
.5 se c 2 se
-

Normal operation
—
B

Turn the steering wheel
right and left Normal operation
—
B

Turn the steering wheel
right and left

ov

Wiring harness (Fuse box
— Control unit, Control unit
— Body ground) See page
AAS-4
Refer
to

page
15—99

B

Turn the steering wheel
right and left
Wiring harness (Fuse box
— Control unit, Control unit
— Body ground) See page
AAS-4
Refer
to

page
15—99

C

Change the switch from
NORMAL to SPORT
or

from SPORT
to

NORMAL

0.5 sec
4.4V-""
_

n

Normal operation
—
C

Change the switch from
NORMAL to SPORT
or

from SPORT
to

NORMAL
Normal operation
—
C

Change the switch from
NORMAL to SPORT
or

from SPORT
to

NORMAL

0.5 sec 0
4.4V
nv
.5 se c
—
2 se
C

i—1 i—i
Front actuators
or
wiring
harness (Control unit
—

Front right
or
left actuator
AAS-5
Refer
to

page
15-100

C

Change the switch from
NORMAL to SPORT
or

from SPORT
to

NORMAL
Front actuators
or
wiring
harness (Control unit
—

Front right
or
left actuator
AAS-5
Refer
to

page
15-100

C

Change the switch from
NORMAL to SPORT
or

from SPORT
to

NORMAL

0.5 sec 0
4.4V*-
n\/
.5 se c
— r— —
2 sec
—1
Rear actuators
or
wiring
harness (Control unit
—

Rear right
or
left actuator
AAS-6
Refer
to

page
15-101

C

Change the switch from
NORMAL to SPORT
or

from SPORT
to

NORMAL
Rear actuators
or
wiring
harness (Control unit
—

Rear right
or
left actuator
AAS-6
Refer
to

page
15-101

15-96

AUTO ADJUSTING SUSPENSION (AAS) 1 5
C

(Cont'd)
Operate
the
vehicle
at

above
15 km/h (9.3

mph) on
a
chassis roller

OV-
4.4V
0V-
4.4V
OV-
OV

AAS switch
or
wiring har-
ness (Fuse box
—
Control
box and AAS switch, AAS
switch
—
Control box and
Body ground)
Normal operation
Speed sensor
or
Steering
wheel angle sensor
or
wir-
ing harness (Control unit
—

Meter, Control unit
—
An-
gle sensor)
Speed sensor
or
Wiring
harness (Control unit
—

Meter, Fuse box
—
Control
unit, Control unit
—
Body
ground)

76G15X-080
15-97

1 5 AUTO ADJUSTING SUSPENSION
Inspection of circuit
OK

Check
for
continuity between
1U
(GR) terminal
of
the meter connector and
M
(GR) terminal
of
the control unit connector.
Repair the wiring harness (Control unit
to
Meter).

OK

Replace the control unit.

76G15X-081
AAS-2

Failure
of
steering wheel angle sensor
or wiring harness (Angle sensor
—

Control unit)

I

Disconnect the control unit connector, and check
the

resistance between the terminals with
an
ohmmeter
when steering wheel
in
straight ahead position.
Terminal Resistance
A(G)
-
D(GW) ADDrox.
25 kfi

A(G)
-
C(GY) Approx.
50 kfl

C(GY^
-
D(G\M ADorox.
25 kfi
OK

Replace the control unit.

76G15X-082
15-98

AUTO ADJUSTING SUSPENSION
(AAS) 1 5

AAS-3
Normal operation
or
failure
of
the wir-ing harness (Fuse box
to
Control unit, Control unit
to
Body ground)
Check the voltage between each terminal
of
the con-trol unit connector and
a
body ground with ignition ON.
Terminal Voltage
G(B) OV
J(B) OV
K (BY) Approx.
12V
OK
Normal operation.

NG

Replace TURN 15A fuse
or
repair the wiring harness (Fuse box
to
Control unit, Control unit
to
Body ground.)

86U15X-161
AAS-4

Failure
of
wiring harnesses (Fuse
box

to Control unit, Control unit
to
Body
ground).
Check the voltage between each terminal
of
control unit connector and
a
body ground with ignition
ON.

Terminals Voltage
G (B) OV
J (B) OV
K (BY)
ADDTOX.
12V
OK
Replace the control unit.

NG

Replace TURN 15A fuse
or
repair the wiring harness-
es (Fuse box
to
Control unit, Control unit
to
Body
ground.)

86U15X-162

15-99

1 5 AUTO ADJUSTING SUSPENSION (AAS)
AAS-5

Failure
of
the front actuators
or the
wiring harness (Control unit
to
Front-right
or
front-left actuator)
Check the voltage between each terminal
of
front-right and front-left connectors and
a
body ground with ignition ON.
Terminal Voltage
Left side D (BR) Approx.
12V

Right side D (BR) Approx.
12V
NG
Replace POWER WIND 30A fuse
in
fuse box
or
wir-ing harness (Fuse box
to
Actuators).

OK

Disconnect the front-left actuator connector
and
check the voltage between each terminal
of
the con-trol unit connector and
a
body ground with ignition ON.
Terminal Voltage
A (WR) Approx.
12V

B (WL) Approx.
12V

C (WY) Approx.
12V
NG
OK

Reconnect the front-left actuator connector.
Disconnect the front-right actuator connector and check the voltage between each terminal
of
the con-trol unit connector and
a
body ground with ignition ON.
Terminal Voltage
A WR) Aoorox.
12V

B (WL) ADDrox.
12V

C (WY) Approx.
12V

Check the voltage between each terminal
of the
front-right actuator connector and
a
body ground with ignition
ON.

Terminal Voltage
A (WR) Approx.
12V

B (WL) Approx.
12V

C (WY) Approx.
12V
NG

Replace front-right
ac-

tuator.

OK

Repair the wiring har-ness (Front-right actua-tor
to
Control unit).

NG

Check the voltage between each terminal
of
the
front-left actuator connector and
a
body ground with
ignition ON.
Terminal Voltage
A (WR) Approx.
12V

B (WL) Approx.
12V

C (WY)
|
Approx.
12V
OK

Replace the control unit.

NG OK

Replace front-left
ac-
tuator.
Repair wiring harness (Front-left actuator
to
Control unit).

86U15X-163
15-100

AUTO ADJUSTING SUSPENSION (AAS) 1 5

AAS-6
Failure
of
the rear actuators
or
wiring harness (Control unit
to
rear-right
or
rear-left actuator)

vi i11 1vuuuyu tw/v^ii I^CI^I i id i i in I«I wi i
right and rear-left actuator connectors and
a
body ground with ignition ON.
Terminal Voltage
Left side D (BR) Approx.
12V

Right side D (BR) Approx.
12V
NG
Replace POWER WIND 30A fuse
in
fuse box
or
wir-ing harness (Fuse box
to
Actuators).

OK

Disconnect the rear-left actuator connector and check the voltage between each terminal
of
the control unit connector and
a
body ground with ignition ON.
Terminal Voltage
0 (YL) Approx.
12V

Q (YR) Approx.
12V

R (YG) Approx.
12V
NG

OK
Reconnect the rear-left actuator connector.
Disconnect the rear-right actuator connector and check the voltage between each terminal
of
the con-trol unit connector and
a
body ground with ignition ON.
Terminal
'
Voltage
0 (YL)
ADDrox 12V

Q (YR)
ADDrox. 12V

R (YG} Approx.
12V

NG
OK
Replace the control unit.
Check the voltage between each terminal
of
the rear right side actuator connector and
a
body ground with ignition ON.
Terminal Voltage
A (YR) Approx.
12V

B (YG) Approx.
12V

C (YL) Approx.
12V
NG
Replace rear-right ac-
tuator,
OK

Repair wiring harness (Rear-right actuator
to
Control unit).
Check the voltage between each terminal
of
the rear-left actuator connector and
a
body ground with igni-tion ON.
Terminal Voltaae
A (YR) Approx.
12V

B (YG) ADDrox.
12V

C (YL) Approx.
12V

NG
Replace rear-1 eft
ac-

tuator.
OK
Replace wiring harness (Rear-left actuator
to
Control unit).

86U15X-164
15—101

1 5 AUTO ADJUSTING SUSPENSION
AAS-7

Failure
of
AAS switch
or
wiring har-ness (Fuse box
to
Control unit and AAS switch, AAS switch
to
Control unit and Body ground
Check the voltage between each terminal
of
AAS switch connector and
a
body ground with ignition ON.
Terminal Voltage
F (BY) 12V
H (B) OV
NG Replace METER
10 or
15A fuse
or
repair the wiring harness (Fuse box
to
AAS switch, AAS switch
to
Body ground).

OK

Check the operation
of
the AAS switch referring
to
page 15—104.

, OK

Check
for
continuity, between
D
(LY) terminal
of
con-
trol unit and
D
(LY) terminal
of
AAS switch.

OK

Replace the control unit.

A AS-8

Failure
of
speed sensor
or
steering wheel angles sensor
or
wiring harness (Control unit
to
Meter, Control unit
to
Angle sensor).

NG
Replace the AAS switch.

NG
Repair wiring harness.
Disconnect the control unit connector, and check the resistance between the terminals with steering wheel in straight ahead position with
an
ohmmeter.
Terminal Resistance
A(G)
-
D(GW) Approx.
25
k£2
' A(G}
-
C(GY) Approx.
50 kfl

C(GY)
-
D(GW) Approx.
25
kJ2

NG
Check the steering angle sensor referring
to
page 15—16

OK

Go
to
AAS-1 routine.

OK

Repair the wiring harness (control unit
to
Angle
sensor).

76G15X-083
15-102

AUTO ADJUSTING SUSPENSION 1 5
AAS-9
Failure of speed sensor or wiring har-ness (Control unit to Meter, Fuse box to Control unit, Control unit to Body ground)
Replace METER 10 or 15A fuse or repair the wiring harness (Fuse box to Control unit, Control unit to Body ground).
Check the voltage between each terminal of control
unit connector and a body ground with ignition ON.
Terminal Voltage
G (B) OV
J (B) OV
K (BY) Approx. 12V
OK
Go to AAS-1 routine.
76G15X-084
15—103

1 5 AUTO ADJUSTING SUSPENSION
Actuator
Inspection
1. Turn the ignition switch ON.
2. Alternately switch ON the "NORMAL" and
"SPORT" switches. Check whether the shaft of the
actuator installed on the front and rear damper
operates. (Visual inspection)
86U15X-167
86U15X-168
76G15X-095
3. If the actuator does not operate, disconnect the ac-
tuator connector and check for a few ohms resis-
tance between the terminals.
Terminal Resistance
A(WR) - D(BR)
Front B(WL) - D(BR)
C(WR) - D(BR) 2-8 (fi) A(YR) - D(BR) 2-8 (fi)
Rear B(YG) - D(BR)
C(YL)— D(BR)
AAS Switch
Inspection
1. Use an ohmmeter to check continuity of the termi-
nals of the switch.
2. If continuity is not as specified, replace the switch.
Position Terminal
SOFT

NORMAL
SPORT
O
o—o
-o
o
o
o
o
g
-o
-o -o

O
O: Indicates continuity
Steering Wheel Angle Sensor
Inspection
See page 15—16
Vehicle Speed Sensor
Inspection
See page 15—88
76G15X-085
15—104

POWER DOOR LOCK 1 5
POWER DOOR LOCK
STRUCTURAL VIEW
CIRCUIT DIAGRAM

BATTERY

86U15X-171
15—105