Mitsubishi Eclipse. Manual - part 848

ON-VEHICLE SERVICE

TSB Revision

AUTOMATIC TRANSAXLE

23A-401

ON-VEHICLE SERVICE

A/T CONTROL COMPONENT LAYOUT

M1231008600310

NAME

SYMBOL NAME

SYMBOL

A/T control relay

D

Shift switch assembly <Vehicles with 
sport mode>

K

Crankshaft position sensor <2.4L Engine> E

Solenoid valves

G

Crankshaft position sensor <3.0L Engine> E

Stoplight switch

I

Data link connector

J

TP sensor <3.0L Engine>

B

Dual pressure switch

A

TP sensor <2.4L Engine>

B

Input shaft speed sensor

C

Transmission fluid temperature sensor G

Output shaft speed sensor

C

Transmission range switch

F

Power train control module (PCM)

H

AC004792

H

I

J

A

B

C

D

E

F

G

E

F

G

A

B

C

<2.4L ENGINE>

<3.0L ENGINE>

D

K

AB

ON-VEHICLE SERVICE

TSB Revision

AUTOMATIC TRANSAXLE

23A-402

AC001876

HEADLIGHT (RH)

DUAL
PRESSURE
SWITCH

AB

A

AC001880

<2.4L ENGINE>

AC

TP SENSOR

B

AC001877

<3.0L ENGINE>

AC

TP SENSOR

B

AC100203

C

AH

OUTPUT
SHAFT
SPEED
SENSOR

INPUT SHAFT
SPEED
SENSOR

AC102447AD

BATTERY

D

A/T CONTROL RELAY

AC001882AB

<2.4L ENGINE>

CRANKSHAFT
POSITION SENSOR

E

AC001878

<3.0L ENGINE>

CRANKSHAFT
POSITION
SENSOR

CRANKSHAFT
SPROCKET

AB

E

AC001844

F

AN

DIPSTICK

TRANSMISSION
RANGE SWITCH

ON-VEHICLE SERVICE

TSB Revision

AUTOMATIC TRANSAXLE

23A-403

ESSENTIAL SERVICE

TRANSMISSION FLUID CHECK

M1231021400038

1. Drive the vehicle until the transmission fluid temperature 

rises to the normal temperature [70 

− 80°C (158 − 176°F)].

NOTE: The transmission fluid temperature is measured with 
scan tool MB991958 (MUT-III sub assembly).
NOTE: If it takes some amount of time until the transmission 
fluid reaches its normal operating temperature [70 

−

 80

°

C 

(158 

−

 176

°

F)], check the transmission fluid level by refer-

ring to the left diagram.

2. Park the vehicle on a level surface.
3. Move the selector lever through all positions to fill the torque 

converter and the hydraulic circuits with fluid, and then move 
the selector lever to the "N" position.

4. After wiping off any dirt around the dipstick, remove the 

dipstick and check the condition of the transmission fluid.

AC001879

G

OVERDRIVE
SOLENOID VALVE

LOW-REVERSE
SOLENOID 
VALVE

TRANSMISSION
FLUID
TEMPERATURE
SENSOR

VALVE BODY
ASSEMBLY

UNDERDRIVE
SOLENOID

SECOND
SOLENOID
VALVE

TORQUE
CONVERTER
SOLENOID
VALVE

AE

AC001883

POWER-
TRAIN
CONTROL
MODULE
(PCM)

AB

H

AC001884 AB

STOPLIGHT SWITCH

BRAKE PEDAL

I

AC001886AB

DATA LINK
CONNECTOR

ACCELERATOR
PEDAL

J

AC001885

K

SELECTOR
LEVER

SHIFT
SWITCH
ASSEMBLY

AB

AC002477

80

DIPSTICK

60

40

(176)

(140)

(104)

FLUID TEMPERATURE [˚C (˚F)]

– 30 (– 1.2)

– 20 (– 0.8)

– 10 (– 0.4)

0 (0)

10 (0.4)

FLUID LEVEL [mm (in)]

AB

ON-VEHICLE SERVICE

TSB Revision

AUTOMATIC TRANSAXLE

23A-404

NOTE: If the transmission fluid smells as if it is burnt, it 
means that the transmission fluid has been contaminated by 
fine particles from the bushings and friction materials. A 
transaxle overhaul and cooler line flushing may be neces-
sary.

5. Check that the transmission fluid level is at the "HOT" mark 

on the dipstick. If the transmission fluid level is less than 
this, add DIAMOND ATF SP III or equivalent transmission 
fluid until the level reaches the "HOT" mark.
NOTE: If the transmission fluid level is too low, the oil pump 
will draw in air along with the transmission fluid, which will 
cause bubbles to form. If the transmission fluid level is too 
high, rotating components inside the transaxle will churn the 
fluid and air into a foamy liquid. Both conditions (level too 
low or too high) will cause the hydraulic pressure to drop, 
which will result in late shifting and slipping of the clutches 
and brakes.
NOTE: In either case, air bubbles can interfere with normal 
valve, clutch, and brake operation. Also, foaming can cause 
transmission fluid to escape from the transaxle vent where it 
may be mistaken for a leak.

6. Securely insert the dipstick.

NOTE: The transmission fluid should always be replaced 
under the following conditions:

.

•

When troubleshooting the transaxle.

•

When overhauling the transaxle.

•

When the transmission fluid is noticeably dirty or burnt 
(driving under severe conditions).

TRANSMISSION FLUID CHANGE

M1231021500035

If you have an transmission fluid changer, use this changer to 
replace the transmission fluid. If you do not have an transmis-
sion fluid changer, replace the transmission fluid by the follow-
ing procedure.
1. Disconnect the hose shown in the illustration which 

connects the transaxle and the oil cooler (inside the 
radiator). Place a container under the hose to collect the 
discharge.

CAUTION

The engine should be stopped within one minute after it is 
started. If all the transmission fluid has drained out before 
then, the engine should be stopped at that point.
2. Start the engine and let the transmission fluid drain out.

(Running conditions: "N" range with engine idling)

Approximately 3.5 dm

3

 (3.7 quarts) of transmission 

fluid should be removed.

AC106828AB

AC001889 AB