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

ON-VEHICLE SERVICE

TSB Revision

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

TSB Revision

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

TSB Revision

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

TSB Revision

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)