1989 MITSUBISHI GALANT heating

GENERAL - Maintenance Service00-43
1
O.AUTOMATIC
TRANSAXLE
Inspect fluid levelMOOSSDA
1. Drive until the fluid temperature reaches the usual ternperature
[70-80°C (160- 18O”F)I.
2. Plaice vehicle on level floor.
3.Move selector lever sequentially to every position to fill
torque converter and hydraulic circuit with fluid, then place lever in “N” Neutral position. This operation is
necessary to be sure that fluid level check is accurate.
4. Before removing dipstick, wipe all dirt from area around
dipstick. Then take out the dipstick and check the
condition of the fluid.
The transaxle should be overhauled under the following
conditions.l If there is a “burning” odor.
l If the fluid color has become noticeably blacker.
l If there is a noticeably great amount of metal particles in the fluid.
5.Chleck to see if fluid level is in “HOT” range on dipstick.
If fluid level is low, add ATF until level reaches “HOT”
range.
LO\N fluid level can cause a variety of conditions
because it allows pump to take in air along with fluid. Air
trapped in hydraulic circuit forms bubbles which make
fluid spongy. Therefore, pressures will be erratic. Improper filling can also raise fluid level too high. When
transaxle has too much fluid, gears churn up foam and cause same conditions which occur with low fluid level,
resulting in accelerated deterioration of ATF.In either case, air bubbles can cause overheating, fluid
oxidation, which can interfere with normal valve, clutch,
and servo operation. Foaming can also result in fluid escaping from transaxle vent where it may be mistaken
for a leak.
6. Be sure to examine fluid on dipstick closely. Chaqge
fluid
Drain
tlhe fluid and check whether there is any evidence of
contamination. Replenish with new fluid after the cause of any contamina-
tion
has been corrected.
(1) Rernove drain plugs to let fluid drain.
(2) Rernove the oil pan.
(3) Check the oil filter for clogging and damage and replace
if necessary.
(4) Clean the inside of oil pan and 5 magnets.
(5) Attach the five magnets to the concave part of the oil
pan.
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(6) Clean both gasket surfaces of transaxle case and oil
pan.
(7) Install oil pan with new gasket and tighten oil pan bolts
to
IO-I 2 Nm (7.5-8.5 ftlbs.)
(8) Tighten drain plug with gasket to 30-35 Nm (22-25 ft.lbs.).
(9) Supply 4
dm3 (4.23 qts.) of specified ATF into case
through dipstick hole. [Total quantity of ATF required is 6.1
dm3 (6.45 qts.).
Actually however, approx. 4.5 dm3 (4.76 qts.) of fluid
car1 be replaced because rest of fluid remains in torque converter.]
1

FUEL SYSTEM VALVE>- On-Vehicule Inspection of MFI Components13-53
BAROMETRIC PRESSURE SENSOR
Volume air
Barometric.pressure
sensor
lutput Voltage ECl53.
Barometnc
pressure
mmHg 760 ~~1551
(3) Measure resistance while heating the sensor using a hair
drier.
Temperature
“C (“F)Resistance (kQ)
HigherSmaller
(4) If the value deviates from the standard value or the resist-
ance remains unchanged, replace the volume air flow sen-
sor assembly.
MlBYHAA
@ Volume air flow sensor connector
@ Harness sideconnector
t
113 j23 b ‘I 24j i
IEngine control module
6FU1293 Enaine
control module connector
OlL0838
OPERATION
l The barometric-pressure sensor functions to
convert the barometric pressure to voltage, and
to input that voltage (as signals) to the engine control module.
The engine control module, based upon those signals, then corrects the amount to fuel injec-
tion, etc.
l
The 5V power supply within the engine control
module is supplied to the barometric-pressure
sensor; it passes through the circuitry within the
sensor, and is grounded at the engine control
module.
l The barometric-pressure sensor output voltage
is sent to the engine control module in propor-tion to the barometric pressure (absolute pres-
sure).
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FUEL SYSTEM -On-Vehicle Inspection of MFI Components13-265

>
Volume air flow sensor
side connector

I J
1
I
6FUO62:-I
r
rature sensor
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:Turbo>
lerature sensor,$kpntak _-.-.- --
i\PJtemp -
-“, ’
w\
SENSOR INSPECTION
(1) Disconnect the volume air flow sensor connectors.
(2) Measure resistance between terminals @ and @. (3)
Er$%e resistance between terminals @ and 0,.

Temperature “C (“F)
0 (32)
20 (68)
80 (176)
Resistance (kQ)
6.0
2.7
0.4
(3) Measure resistance while heating the sensor using a hair
drier.
Temperature “C (“F)
Higher
Resistance (kR)
Smaller
(4) If the value deviates from the standard value or the resist- ance remains unchanged, replace the volume air flow sen-
sor assembly.

COOLING -Engine Coolant Temperature Gauge Unit, Engine Coolant
Temperature Sensor and Engine Coolant Temperature Switch14-33
20R0586
ENGINE COOLANT TEMPERATURE SWITCH

(Air conditioning or A/T control)
(1) Remove the engine coolant temperature switch from the
water outlet fitting.
(2) immerse the engine coolant temperature switch in oil and heat by a gas stove or similar method so as to increase the
oil temperature.
(3) Check to be sure that the engine coolant temperature switch is switched ON when the oil temperature reaches
the standard value.
Standard value:
lOO-104% (212-219°F)
CautionUse engine oil for this test; stir it well while heating,
and do not heat more than necessary.
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1

23-26AUTOMATIC TRANSAXLE - Troubleshooting
HOT
TFA0715
AW
D
TFA0700
DATA LINK AND TEST
FLUID LEVEL AND CONDITION
1. Drive until the
fluid
temperature
reaches the
usual tem-
perature
[70-80°C (160- 18O”F)l.
2. Place
vehicle
on level floor.
3. Move
selector
lever sequentially
to
every
position
to fill
torque
converter

and hydraulic circuit
with fluid,
then
place
lever in “N” Neutral position.
This operation is necessary
t0
be sure that fluid
level check is accurate.
4. Before
removing
dipstick,
wipe all dirt from area around
dipstick.

Then take out
the
dipstick
and check the
condition
of the
fluid.
The
transaxle
should be overhauled under the following
conditions.
l If there

is a “burning” odor.
l If the
fluid
color
has become
noticeably
blacker.
lIf there
is a noticeably
great
amount
of metal particles in
the
fluid.
5.Check to
see if fluid
level is in “HOT” range on dipstick.
If
fluid
level is low, add automatic
transaxle
fluid
until level
reaches “HOT” range.
Low
fluid
level can cause a variety of
conditions
because it
allows
pump
to
take
in air along with fluid. Air trapped in
hydraulic circuit
forms
bubbles
which
make fluid
spongy.
Therefore,
pressures
will be erratic. Improper filling

can also raise fluid level too
high. When
transaxle

has too
much fluid,
gears churn up foam and
cause same
conditions
which occur with low fluid
level, resulting

in accelerated deterioration
of
automatic
transaxle
fluid.
In
either
case, air bubbles
can cause overheating,
fluid
oxidation,

which can interfere
with normal valve, clutch,
and
servo
operation.
Foaming can also result
in fluid
escaping
from
transaxle
vent where it
may be mistaken
for
a leak.
6. Be
sure to
examine
fluid
on dipstick
closely.
CONTROL CABLE
Whether control
cable is properly
adjusted
can be confirmed
by
checking

whether park/neutral
position
switch is perform-
ing
well.
1.
Apply
parking brakes and service
brakes securely.
2. Place
selector
lever
to
“R” range.
3. Set ignition
key to
“ST” position.
4.
Slowly
move
the
selector
lever
upward
until it
clicks as it
fits in
notch of “P” range. If starter
motor
operates
when
lever makes a click, “P”
position
is correct.
5.Then slowly
move
selector
lever to “N” range by
the
same
procedure as in foregoing
paragraph. If starter
motor
operates

when selector
lever
fits in ‘IN”, “N” position
is correct.
6.
Also check to be sure the
vehicle
doesn’t
begin to move
and
the
lever
doesn’t
stop
between
P-R-N-D.
7. The control
cable is properly
adjusted if, as described
above,the
starter
motor
starts
at both the

“P” range and the

“N” range.
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23-82AUTOMATIC TRANSAXLE - Service Adjustment Procedures
HOTTFA0715
AWD
LT FA0700J
SERVICE ADJUSTMENT PROCEDUR&g
TRANSAXLE FLUID LEVEL INSPECTION
1. Drive until the fluid temperature reaches the usual tem-
perature [70-80°C

(160- 18O”F)I.
2. Place vehicle on level floor.
3. Move selector lever sequentially to every position to fill
torque converter and hydraulic circuit with fluid, then place
lever in “N” Neutral position.
4. Before removing dipstick, wipe all dirt from area around
dipstick. Then take out the dipstick and check the condition
of the fluid.
The transaxle should be overhauled under the following
conditions.
l If there is a “burning” odor.
l If the fluid color has become noticeably blacker.
l
If there is a noticeably great amount of metal particles in
the fluid.
5.Check to see if fluid level is in “HOT” range on dipstick. If
fluid level is low, add automatic transaxle fluid until level
reaches “HOT” range.
Transaxle fluid: DIAMOND ATF SP or equivalent
Low fluid level can cause a variety of conditions because it
allows pump to take in air along with fluid. Air trapped in hydraulic circuit forms bubbles which make fluid spongy.
Therefore, pressures will be erratic, causing delayed shift,
slippy clutch and brakes, etc.
Improper filling can also raise fluid level too high. When
transaxle has too much fluid, gears churn up foam and
cause the same conditions which occur with low fluid level, resulting in accelerated deterioration of automatic transaxle
fluid.
In either case, air bubbles can cause overheating, fluid
oxidation, which can interfere with normal valve, clutch,
and servo operation. Foaming can also result in fluid
escaping from transaxle vent where it may be mistaken for
a leak.
6. Be sure to examine fluid on dipstick closely.
TRANSAXLE FLUID REPLACEMENTM23FcsGa
Refer to GROUP 00-Maintenance
Service.
TRANSFER OIL LEVEL INSPECTIONMm=xM
Transfer oil level inspection is the same as for the manual
transaxle transfer.
Refer to GROUP 00
- Maintenance Service.
TRANSFER OIL REPLACEMENTM23FYAA
Transfer oil replacement is the same as for manual transaxle
transfer.
Refer to GROUP 22-Service
Adjustment Procedures.
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SERVICE BRAKES - Service Adjustment Procedures35-63
(4) Calculate the drag torque of the disc brake (difference
between measured values in 3 and 4).
Standard value: 70 N (15.4 Ibs.) or less
10. If the disc brake drag force exceeds the standard value,
disassemble piston and clean the piston. Check for corro-
sion or worn piston seal, and check the sliding condition of
the lock pin and guide pin.
Front Disc Brake Rotor Inspection
CAUTION
When servicing disc brakes, it is necessary to exercise caution to keep \
the disc brakes within the allowable service values in order to maintain normal brake operation.
Before re-finishing or re-processing the brake disc surface, the followi\
ng conditions should be checked.
Inspection items
Scratches, rust, saturated lining materialsand wear
Run-out or drift
Change in thickness (parallelism) Inset or warping (flatness) Remarks
lIf the vehicle is not driven for a certain period, the sections of the d\
iscs
that are not in contact with lining will become rusty, causing noise and\
shuddering.
lIf grooves resulting from excessive disc wear and scratches are not re-
moved prior to installing a new pad assembly, there will momentarily
be inappropriate contact between the disc and the lining (pad).
Excessive run-out or drift of the discs will increase the pedal depressi\
on
resistance due to piston knock-back.
If the thickness of the disc changes, this will cause pedal pulsation, s\
hud-dering and surging.
Overheating and improper handling while servicing will cause inset orwarping.
RUN-OUT CHECKM35F5AB
1.Remove the caliper support; then raise the caliper assem-
bly upward and secure by using wire.
2.Inspect the disc surface for grooves, cracks, and rust. Clean
the disc throughly and remove all rust.
3. Place a dial gauge approximately 5 mm
(.2 in.) from the
outer circumference of the brake disc, and measure the
run-out of the disc.
Limit:

Up to 1991 models
0.08 mm (.0031 in.)
From 1992 models
0.07 mm (.0028 in.)

*1989 models
0.10 mm (.0039 in.)
Up to 1991 models 0.08 mm
(0031 in.)
From 1992 models 0.07 mm
(.0028 in.)
NOTE
Tighten the nuts in order to secure the disc to the hub.
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