Mitsubishi Montero (2002-2004). Manual — part 859

ON-VEHICLE SERVICE

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AUTOMATIC TRANSMISSION

23Aa-27

TRANSMISSION FLUID TEMPERATURE SENSOR
CHECK

M1231104500158

1. Remove the transmission fluid temperature sensor.
2. Measure the resistance between terminals No.1 and No.2 of

the transmission fluid temperature sensor connector.

Standard value:

3. If the transmission fluid temperature sensor resistance is

outside the specified range and the "A/T TEMP" indicator
light is illuminating, replace the transmission fluid
temperature sensor.
NOTE: The "A/T TEMP" indicator light on the combination
meter illuminating when the temperature reaches approxi-
mately 125

°

C (257

°

F) or greater, and then stops flashing

when the temperature drops below approximately 115

°

C

(238

°

F).

TRANSMISSION RANGE SWITCH CHECK

M1231112600105

Refer to

P.23Aa-20

.

STOPLIGHT SWITCH CHECK

M1231103000127

Refer to GROUP 35A, On-vehicle Service

− Stoplight Switch

Check

P.35A-116

.

VEHICLE SPEED SENSOR CHECK

M1231109800110

Refer to GROUP 54A, Combination Meters Assembly and
Vehicle Speed Sensor

P.54A-66

.

DUAL PRESSURE SWITCH CHECK

M1231109900117

Refer to GROUP 55A, On-vehicle Service

− Dual Pressure

Switch Check

P.55A-118

.

TRANSMISSION FLUID
TEMPERATURE

RESISTANCE

0

°C (32°F)

16.7

− 20.5 kΩ

20

°C (68°F)

7.3

− 8.9 kΩ

40

°C (104°F)

3.4

− 4.2 kΩ

60

°C (140°F)

1.9

− 2.2 kΩ

80

°C (176°F)

1.0

− 1.2 kΩ

100

°C (212°F)

0.57

− 0.69 kΩ

AC100601AB

ATF

ON-VEHICLE SERVICE

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AUTOMATIC TRANSMISSION

23Aa-28

A/T CONTROL RELAY CHECK

M1231110300119

1. Remove the A/T control relay.

2. Use jumper wires to connect A/T control relay terminal 2 to

the negative battery terminal and terminal 4 to the positive
battery terminal.

3. Check for continuity between A/T control relay terminals 1

and 3 when the jumper wires are connected to and
disconnected from the battery.

4. If there is any problem with the A/T control relay, replace it.

SOLENOID VALVE CHECK

M1231110400116

1. Use scan tool MB991502 to measure the transmission fluid

temperature. The desired temperature setting for performing
the solenoid valve check is 20

°C (68°F).

2. Remove the solenoid valve harness and transmission fluid

temperature sensor connector.

3. Measure the resistance between the solenoid valve

terminals.

4. The measured resistance of the solenoid valve when the

transmission fluid temperature is 20

°C (68°F) should match

the specified resistance on the chart below.

Standard value:

JUMPER WIRE

CONTINUITY BETWEEN
TERMINALS NO.1 AND NO.3

Connected

Less than 2 ohms

Disconnected

Open circuit

AC002590AD

A/T CONTROL
RELAY

AC100555

1 2
3 4

AC

TERMINAL
NO.

ITEMS

RESISTANCE

7 - 10

Torque converter clutch
solenoid valve

2.7

− 3.4 Ω [at

20

°C (68°F)]

6 - 10

Low-reverse/Direct solenoid
valve

4 - 9

Second solenoid valve

3 - 9

Underdrive solenoid valve

5 - 9

Overdrive solenoid valve

8 - 10

Reduction solenoid valve

AC100606

7

10

5

3

1 2

4

6

9

8

AD

SOLENOID VALVE
HARNESS & TRANSMISSION
FLUID TEMPERATURE SENSOR
CONNECTOR

ON-VEHICLE SERVICE

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AUTOMATIC TRANSMISSION

23Aa-29

5. If the solenoid valve resistance is within the specified range,

check the power supply and the ground circuits.

6. If the solenoid valve resistance is not within the specified

range, drain the transmission fluid and remove the valve
body cover.

7. Disconnect the connector of any solenoid valves that are not

within the specified range.

8. Measure the resistance between terminals 1 and 2 of any

solenoid valve that was not within the specified range.

Specified resistance:

2.7

− 3.4 Ω [at 20°C (68°F)]

9. If the resistance is not within the specified range, replace the

solenoid valve.

10.If the resistance is within the specified range, check the

wiring harness between the affected A/T control solenoid
valve assembly and the solenoid valve. If a problem is not
found in the above steps, check the solenoid valve O-rings
and replace them if necessary.

ACX01206AD

TORQUE CONVERTER
CLUTCH SOLENOID
VALVE

UNDERDRIVE
SOLENOID VALVE

LOW-REVERSE
SOLENOID VALVE

OVERDRIVE
SOLENOID
VALVE

SECOND
SOLENOID VALVE

REDUCTION
SOLENOID VALVE

AC100378

1
2

AB

TRANSMISSION CONTROL

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AUTOMATIC TRANSMISSION

23Aa-30

TRANSMISSION CONTROL

REMOVAL AND INSTALLATION

M1231117900101

CAUTION

When removing and installing the transmission control cable and shift lock cable unit, be careful not
to hit the SRS-ECU.

AC000012 AD

5

6

1

2

11 ± 2 N·m
98 ± 17 in-lb

11 ± 2 N·m
98 ± 17 in-lb

5.0 ± 1.0 N·m
44 ± 9 in-lb

4

3

11 ± 2 N·m
98 ± 17 in-lb

SELECTOR LEVER ASSEMBLY
AND TRANSMISSION
CONTROL CABLE ASSEMBLY
REMOVAL STEPS

•

FRONT FLOOR CONSOLE
(REFER TO GROUP 52A

P.52A-

7

.)

1.

TRANSMISSION CONTROL
HARNESS CONNECTION

2.

TRANSFER SHIFT LEVER
SWITCH, BRACKET ASSEMBLY

>>C<<

3.

SHIFT LOCK CABLE UNIT
CONNECTION

4.

TRANSMISSION CONTROL
CABLE CONNECTION

5.

SELECTOR LEVER ASSEMBLY

•

FRONT EXHAUST PIPE (REFER
TO GROUP 15

P.15-13

.)

<<A>> >>B<<

6.

TRANSMISSION CONTROL
CABLE ASSEMBLY

SELECTOR LEVER ASSEMBLY
AND TRANSMISSION
CONTROL CABLE ASSEMBLY
REMOVAL STEPS (Continued)