Mitsubishi L200. Manual — part 276

GENERAL

AUTOMATIC TRANSMISSION

23A-11

Electronic control system

SYSTEM CONFIGURATION DIAGRAM

AC903575

Input signals

Ignition switch

Input shaft speed sensor

Output shaft speed sensor

A/T fluid temperature sensor

Inhibitor switch

4LLc detection switch

Select switch

Up shift switch

Down shift switch

A/T control relay

Output signals

Damper clutch control (DCC)
solenoid valve

Second (2ND) solenoid valve

Underdrive (UD) solenoid valve

Overdrive (OD) solenoid valve

Reduction (RED) solenoid valve

A/T fluid temperature warning lamp

Shift indicator lamp

Fail-safe condition indicator
(flashing N range lamp)

CAN communication

M.U.T.-III

A/T-ECU

Low-reverse (LR) / Direct (DIR)
solenoid valve

AD

SENSORS AND ACTUATORS

Item

Function

Sensor

Input shaft speed sensor

Detects when input shaft speed

Output shaft speed sensor

Detects when output shaft speed

A/T fluid temperature sensor

Detects A/T fluid temperature

Inhibitor switch

Detects selector lever position

4LLc detection switch

Detects that 4LLc is selected

Select switch

Detects that sport mode is selected

Up shift switch

Detects up-shift request of sport mode

Down shift switch

Detects down-shift request of sport mode

SERVICE SPECIFICATIONS

AUTOMATIC TRANSMISSION

23A-12

SOLENOID VALVE OPERATION
In each gear, the solenoid valves are controlled as
appropriate by instructions from the A/T-ECU.

Gear

LR/DIR

2ND

UD

OD

RED

1st

OFF*/ON <LR> ON

OFF

ON

OFF

2nd

ON <LR>

OFF

OFF

ON

OFF

3rd

ON <DIR>

ON

OFF

OFF

OFF

4th

OFF <DIR>

ON

OFF

OFF

ON

5th

OFF <DIR>

OFF

ON

OFF

ON

Reverse

OFF <LR>

ON

ON

ON

OFF

Neutral/Parking OFF <LR>

ON

ON

ON

OFF

NOTE: *Only when in the sport mode and the vehicle
is stationary (approx. 10 km/h or less).

SERVICE SPECIFICATIONS

M1231100300259

Actuator

A/T control relay

Turns solenoid valve power supply circuit ON/OFF

DCC solenoid valve

Regulates hydraulic pressure to damper clutch control
valve

LR/DIR solenoid valve

Regulates hydraulic pressure to pressure control valve
(for gear shift control)

2ND solenoid valve
UD solenoid valve
OD solenoid valve
RED solenoid valve
N range lamp

Indicates that fail-safe is active and shows a diagnosis
code

Shift indicator lamp

Indicates present shift stage by lamp in combination
meter

A/T fluid temperature warning lamp

Gives a warning about A/T fluid temperature

Item

Function

Item

Standard value

A/T fluid temperature sensor resistance k

Ω

At 0

°C

16.7

− 20.5

At 20

°C

7.3

− 8.9

At 40

°C

3.4

− 4.2

At 60

°C

1.9

− 2.2

At 80

°C

1.0

− 1.2

At 100

°C

0.57

− 0.69

Damper clutch control (DCC) solenoid valve coil resistance (at 20

°C) Ω

2.7

− 3.4

Low & reverse (LR) solenoid valve coil resistance (at 20

°C) Ω

2.7

− 3.4

Second (2ND) solenoid valve coil resistance (at 20

°C) Ω

2.7

− 3.4

Underdrive (UD) solenoid valve coil resistance (at 20

°C) Ω

2.7

− 3.4

LUBRICANTS

AUTOMATIC TRANSMISSION

23A-13

LUBRICANTS

M1231100400171

Item

Specified lubricants

Capacity L

A/T fluid

DIA QUEEN ATF SP III

9.7

Transfer oil

Gear oil API classification GL-3 SAE 75W-85 or API
classification GL-4 SAE 75W-85

2.5

SEALANTS

M1231100500145

Item

Specified sealant

Transfer control lever assembly

3M ATD Part No.8660 or equivalent

Overdrive (OD) solenoid valve coil resistance (at 20

°C) Ω

2.7

− 3.4

Reduction (RED) solenoid valve coil resistance (at 20

°C) Ω <5A/T>

2.7

− 3.4

Stall speed r/min

2,200

− 2,700

Line pressure MPa

1.01

− 1.05

Item

Standard value

SPECIAL TOOLS

AUTOMATIC TRANSMISSION

23A-14

SPECIAL TOOLS

M1231100600368

Tool

Number

Name

Use

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

a

b

c

d

e

f

DO NOT USE

MB991955

a. MB991824
b. MB991827
c. MB991910
d. MB991911
e. MB991825
f. MB991826

M.U.T.-III sub-assembly

a. Vehicle

Communication
Interface (V. C. I.)

b. M.U.T.-III USB cable
c. M.U.T.-III main

harness A (Vehicles
with CAN
communication
system)

d. M.U.T.-III main

harness B (Vehicles
without CAN
communication
system)

e. M.U.T.-III measure

adapter

f. M.U.T.-III trigger

harness

CAUTION

For vehicles with CAN
communication, use M.U.T.-III
main harness A to send
simulated vehicle speed. If you
connect M.U.T.-III main harness B
instead, the CAN communication
does not function correctly.
Checking A/T diagnosis trouble
codes

MB992006

MB992006

Extra fine probe

Continuity check and voltage
measurement at harness wire or
connector