1989 MITSUBISHI GALANT Service Repair Manual

33B-126ACTIVE-ELECTRONIC CONTROL SUSPENSION - Air compressor
L
MB991 075
w
I12AO443
12A0444
Exhaust solenoid valveJoint
Air iJbex ~~~~~~~~8,:,,.: :.:.:.:.: .,._,:.................:.
..........................................
i==Ja.................:.: . .......................
SERVICE POINTS OF REMOVAL
2. REMOVAL OF AIR TUBE Caution1. In order to prevent dust, dirt and other foreign material from getting into the air tube and air
compressor openings, cover these opening with
vinyl tape or similar material.
2. Be careful not to bend the air tubes.
INSPECTION
(1) Using special tool (adaptor C), connect the air tube on the
gauge side of the special tool to the air compressor.
(2) Apply battery voltage
(12V) between terminals (1) and (2)
compressor.
(3) Check whether the relief pressure of the air compressor is the standard value.
Standard value: l,OOO-1,300

kPa (142-185 psi)
NOTE
Because of pulsation caused by the opening and closing
of the exhaust solenoid valve combined with the relief
valve, the gauge’s indicator
will show a reading which
fluctuates within a range of
200-300 kPa (29-43 psi). Use
the mid-point of this fluctuation to make the gauge reading.
(4) Stop the air compressor and, with the pressure held, apply battery voltage
(12V) between air compressor terminals (3)
and (4). At this time, check to be sure that the exhaust solenoid valve makes a “click” sound and the pressure is
gradually decreasing.
(5) If air compressor relief pressure is not within the standard
value, or if there is a malfunction of the exhaust solenoid
valve, replace the air compressor.
Caution
When the air compressor is replaced, first check to be
sure that there is no air leakage at air tube joints, nopoor contacts of wiring, and that the
therm0 switch is
not in operation.
SERVICE POINTS OF INSTALLATION
2. INSTALLATION OF AIR TUBE
(1) First insert the air tube at the lower part of the dryeruntil resistance is felt, and then press the tube further
inward to the paint mark on the air tube.
Caution
Air leakage may occur if the air tube connection is
not complete and secure.
(2) Connect air tubes correctly to the air compressor. Apply a soap-and-water solution to the air tube
connections to check to be sure that there is no air
leakage.
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Solenoid Valve andACTIVE-ELECTRONIC CONTROL SUSPENSION - Dryer33B-127
SOLENOID VALVE AND DRYERhl33ZPAC
REMOVAL AND INSTALLATION7-11 Nm
5-8
ft.lbs.
5-8 ft.lbs.
Front solenoid valve removal steps
+e I)+ 1. Air tubes
2.
0-rinas3. Fran<
solenoid valve
assembly
4. Front solenoid valve
bracket
Dryer removal steps
*I) I)+ 1. Air tubes 2. O-rings
3. Joint assembly
4. Bush
5. O-ring
6. Dryer
Flow control solenoid valve
assembly removal steps
*I) l +1. Air tubes
2. O-rings
7. Flow control solenoid valve
assembly
m
1
e-I-la2
7-11 Nm
5-8 ft.lbs.
u-b 3
f!&I ,1
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33B-128 ACTIVE-ELECTRONIC CONTROL SUSPENSION - fi%?d Va’ve and
7-11 Nm5-8 ft.lbs.
4-6 Nm
3-4 ft.lbs.
Pre-removal Operation
I-im\.j -7
l Removal of Trunk Room Side Tr(Refer to GROUP 52-Trims.)
Air tube
0
\ e7” tiB991229
1210280
Rear solenoid valve removal steps
+e ,+ 1. Air tube
s
2. O-rings
8. Rear solenoid valve assembly
9. Rear solenoid valve bracket
12A0450
SERVICE POINTS OF REMOVAL
1. REMOVAL OF AIR TUBES
(1) Push the special tool inward, in direction
0 shown in the
figure, in order to expand the tabs of the joint.
(2) Pull out the air tube, together with the special
tool. in
direction
0.
Caution In order to prevent dust, dirt and other foreign
material from getting into the air tube, solenoid
valve and dryer openings. Cover these openings
with vinyl tape or similar material.
(3) For the air tube at the lower part of the dryer, loose
n
Hold to
prevent
turning.
the joint, and then pull off.
NOTE
When loosening the joint, use a spanner at the hexagonal part of the joint installation part so as to
prevent it from turning.
Joint
12AO278
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ACTIVE-ELECTRONIC CONTROL SUSPENSION - &ttid Va’ve and 33B-129
12A0369
1 nql \- I E
II-II-II-II--~
G
DFIH12AO292
soap-and-water
solution.
INSPECTION
1. FLOW CONTROL SOLENOID VALVE
Check the No. l-3 solenoid valves shown in the figure for
correct operation and air leakage.
TSB Revision Check item
Condition Result
Inject air from Part A “click” noise will
Good
A and apply battery be
heard, and the
voltage to terminal volume of air blown
0, and then earthout from joints B
terminal 0.and C will become
greater.
Other than as
de-Malfunction of
scribed
abooe.No. 1 sole-
noid valve
Blow air in at joint A “click” noise will
Good
E. apply batterybe heard, and the
voltage (12V) to ter- air being blown out
minal 0, and then will change from
earth terminal
0.joint D to joint I.
Other than as de-Malfunction of
scribed above No. 2 sole-
noid valve
inject air from part A “click” noise will
Good
G and apply battery
be heard, and the
voltage
(12~) to ter- air being blown out
minal
@, and then will change from
earth terminal
0.joint F to joint H
.
Other than as
de-Malfunction of
scribed above. No.
3 sole
-
noid
valve
nject air from part Air is not blown GoodPir.out.
Air is blown out Malfunction of
from joint
B.check valve
W
ith an air pressure
No air leakage
Good
of 1,000
kPa (142 Malfunction of
psi) from parts 9, HAir leakage
solenoid valve
and I, apply a soap-seal
and-water solution
where shown in the illustration.

33B-130 ACTIVE-ELECTRONIC CONTROL SUSPENSION - ?Eid “=lve and
2. FRONT SOLENOID VALVECheck the No.
l-3 solenoid valves shown in the figure for
correct operation and air leakage.
No. 2
No.
3
Check item Result
Good
Condition
Inject air from Part
A and apply battery
voltage to terminal
0, and then earth
terminal
0.
A “click” noise will
be heard, and the
volume of air blow out from joints
B
and C will become
greater.
n
112A0370Malfunction oi
No. 1 sole-
noid valve
Other than as de-
scribed above.Check valve
A “click” noise will
be heard, and the
air being blown
ou’
will change from
joint
D to joint H.
GoodBlow air in at joint
E, apply battery
voltage
(12V) to ter-
minal
0. and then
earth terminal
0.
t I
H
=
Malfunction oi
No. 2 sole-
noid valve
Other than as de-
scribed above
A “click” noise will be heard, and the
air being blown
0u1
will change from
joint
F to joint H.
Other than as de-
xribed above.
Air is not blown
out from joint A
GoodInject air from part
G and apply battery
voltage
(12V) to ter-
minal
@, and then
earth terminal
0.
t
I=
i
r
(
Malfunction of
Yo. 3 sole-
loid valve
;ood
12AO293
4pply battery voltage
12V) to terminal 0
rnd. with terminal @
earthed, blow air in
rt joint B or C.
vlalfunction of :heck
valve
r
C
(
1
P
5c
Air is blown outYom joint A.
Vo air leakage
W
ith an air pressure
of 1,000
kPa (142
psi) from parts B, H
and I, apply a soap-and-water solution
where shown in the illustration.
;ood vlalfunction
of ;olenoid
valve ieal
lir leakage
soap-and-watersolution.
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Solenoid Valve and
ACTIVE-ELECTRONIC CONTROL SUSPENSION - Dryer33B-131
3
F
‘G
\
12A0371
>
Rearpressure
sensor
l------i-l
12AO294
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-n
Coat withsoap-and-water
solution.
3. REAR SOLENOID VALVE
Check the No.
l-3 solenoid valves shown in the figure for
correct operation and air leakage.
Check item ConditionResult
Inject air from Part A “click” noise will
GoodA and apply battery be heard, and the
voltage
(12V) to ter- air will be blown
minal
0, and then out from joints B
earth terminal 0.and C.
Other than as de-Malfunction of
scribed above. No. 1 sole-
noid valve
Blow air in at joint A “click” noise will
Good
E, apply batterybe heard, and the
voltage
(12V) to ter- air being blown out
minal
0, and then will change from
earth terminal
0.joint D to joint H. /
: Other than as de-Malfunction of
I scribed above No. 2 sole-
noid valve
Inject air from part A “click” noise will
Good
3 and apply battery i be heard, and the doltage

(12V) to ter- 1 air being blown out
ninal @, and then will change from
sarth terminal 0.joint F to joint H.
I Other than as de-Malfunction of
scribed above. No. 3 sole-
noid valve
i/Vith an air pressureNo air leakageGood
of 1,000 kPa (142
xi) from parts A and Air leakage
Malfunction of -l, apply a
soap-and-solenoid valve
Nater
solution seal Nhere
shown in the
Ilustration.

33B-132 ACTIVE-ELECTRONIC CONTROL SUSPENSION - p$? Va’ve and
Joint assembly
ezAir tubeidentification color
12AO363
12AO278
SERVICE POINTS OF INSTALLATION
1. INSTALLATION OF AIR TUBES
(1) For the one-touch type of air tube, press in to the joint assembly at the device side until a “click” is heard, and
then check that the tabs of the joint assembly are
securely affixed to the air tube.
Caution Before connecting the air tube, check that the
identification color of the tube and the color at the
joint agree.
(2) First insert the air tube at the lower part of the dryer until resistance is felt, and then press the tube further
inward to the paint mark on the air tube.
Caution
Air leakage may occur if the air tube connection is
not complete and secure.
(3) After connection of the air tube, check for double-
folding of the rolling diaphragm. (Refer to P.338-89.)
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ACTIVE-ELECTRONIC CONTROL SUSPENSION - Air tube336-133
AIR TUBEM332QAC
REMOVAL AND INSTALLATION
l , l *1. *Air tubes
(flow control solenoid valve to joint
assembly) +e
l +2. Air tube
(front solenoid valve to actuator) +e
l e3. Air tubes
(flow control solenoid valve to front
solenoid valve)
4~ l +4. *Air tubes (joint assembly to rear solenoid valve)
+, I)+ 5. Air tub
e
(rear solenoid valve to actuator)
+e ++ 6. Air tub
e
(flow control solenoid valve to air com-
pressor)
l , ,+7. Air tubes (dryer to flow control solenoid valve)
l e l a8. Air tubes (to reserve tank)
9. Joint assembly
10. O-rings
11. Joint
12. Bush
NOTE(1) Connections within ( ) are air tube connections.(2). Air tubes indicated by the l symbol are interwound withthe harness.
12AO450 12AO378
Cross-section of air tube
joint
810
I

S-IO N
m
8-7 ftlbs. 11
I
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