Mitsubishi Montero (2004+). Manual - part 526

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-73

4. Check if the speedometer indicator range is within the 

standard values.

Standard value: <Vehicles for U.S.A.>

Standard value: <Vehicles for Canada.>

5. If not to the standard value, inspect for proper tire size. If not 

correct, replace tires with original size tires and retest. If 
correct, replace the speedometer. If still not to standard 
value, replace vehicle speed sensor.

TACHOMETER CHECK

M1543001000304

1. Attach an external high quality tachometer to the engine 

speed detection connector on the harness side (such as 
with a paper clip).
NOTE: For tachometer check, use an external high quality 
inductive tachometer.

2. Compare the readings of the vehicle tachometer and the 

external tachometer at every engine speed, and check if the 
variations are within the standard values.

Standard value:

STANDARD INDICATION 
km/h (mph)

ALLOWANCE RANGE 
km/h (mph)

16 (10)

14 

− 18 (8.5 − 11.5)

40 (25) 

38 

− 42 (23.5 − 26.5)

80 (50)

78 

− 83 (48.5 − 51.5)

120 (75)

118 

− 123 (73.5 − 76.5)

161 (100)

158 

− 165 (98.5 − 102.5)

STANDARD INDICATION 
km/h

ALLOWANCE RANGE
km/h

20

19 

− 24

40

40 

− 44

80

80 

− 85

120

120.5 

− 125.5

160

160.5 

− 165.5

Engine speed (r/min)

Indication allowance of 
tachometer r/min

700

600 

− 800

2000

1900 

− 2150

3000

2900 

− 3225

4000

3875 

− 4275

5000

4875 

− 5325

6000

5875 

− 6200

ACX00776 AB

TACHOMETER

ENGINE SPEED
DETECTION TERMINAL

PAPER CLIP

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-74

FUEL LEVEL SENSOR CHECK

M1543001300059

Remove the fuel level sensor from fuel tank (Refer to GROUP 
13B, Fuel Tank 

P.13B-8

).

FUEL LEVEL SENSOR RESISTANCE

1. Check that resistance value between the fuel gauge terminal 

and ground terminal is at the standard value when the fuel 
level sensor float is between point 

Standard value:

• Point "F": 3 − 10.1 

• Point "E": 90 − 110 

2. Check that resistance value changes smoothly when the 

float moves slowly between point 

3. If all checks are correct, go to fuel level sensor float height 

check. If any check is not correct, replace the fuel level 
sensor.

FUEL LEVEL SENSOR FLOAT HEIGHT

1. Move the float and measure height A at point "F" (highest) 

and B at point "E" (lowest).

Standard value:

• A: 11.9 mm (0.47 inch)

• B: 195.2 mm (7.69 inches)

2. Adjust the float arm to the standard value, then go to the 

thermistor check.

ACX01779 AC

POINT "F "

POINT "E "

ACX01791AB

A

B

POINT "F"

POINT "E"

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-75

THERMISTOR

CAUTION

After finishing this test, wipe the unit dry and install it in 
the fuel tank.
1. Connect the fuel level sensor (thermistor) to the battery via a 

test light (12 V 

− 3.4 W). Immerse the thermistor in water.

2. Condition is good if the light goes off when the thermistor is 

immersed in water and comes on when it is taken out of 
water.

3. If all check result is correct, the fuel level sensor is OK. If 

either check result is not correct, replace the fuel level 
sensor.

ENGINE COOLANT TEMPERATURE GAUGE UNIT 
CHECK

M1543001500280

1. Drain the engine coolant. (Refer to GROUP 00, 

Maintenance Service 

− Engine Coolant 

P.00-46

.)

2. Remove the engine coolant temperature gauge unit.
3. Immerse the unit in 83

°C (181°F) water to measure the 

resistance.

Standard value: 65.2 

± 75.2 Ω

Reference value

4. If within the standard value, the sensor is OK. Reinstall it, 

then check the engine coolant temperature gauge (Refer to 

P.00-46

). If not within the standard value, replace it.

5. Also check, apply the 3M

AAD part number 8731, 

Locktite

242 or equivalent around the threads of the engine 

coolant temperature gauge unit.

6. Add engine coolant. (Refer to GROUP 00, Maintenance 

Service 

− Engine Coolant 

P.00-46

.)

1

3

2

AC205525

GROUND

THERMISTOR

THERMISTOR

ILLUMINATED

NOT
ILLUMINATED

AB

Temperature 

°C (°F)

Resistance 

Ω

50 (122)

231 

− 247

105 (221)

29.9 

− 39.9

122 (252)

17.5 

− 25.5

ACX00779AB

THERMOMETER

OHMMETER

ACX00780 AB

16 ± 2 N·m
11 ± 1 ft-lb

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-76

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

 REMOVAL AND INSTALLATION

M1543002900195

ACX01266

ACX01792 AC

INSTRUMENT PANEL

SECT A - A

A

A

A

1

2

1

CLIP

A

3

COMBINATION METER REMOVAL 
STEPS

1. METER BEZEL
2. COMBINATION METER

VEHICLE SPEED SENSOR 
REMOVAL 

3. VEHICLE SPEED SENSOR