Mitsubishi Montero (2004+). Manual - part 666

SENSORS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-153

SENSORS

REMOVAL AND INSTALLATION

M1554001900033

INSTALLATION SERVICE POINT

.

>>A<< HEATER WATER TEMPERATURE SENSOR/HEATER 
WATER TEMPERATURE SENSOR CLIP INSTALLATION
Insert the heater water temperature sensor into the mounting 
hole on the heater unit, and secure the sensor with the clip.

INSPECTION

M1554002000088

.

HEATER WATER TEMPERATURE SENSOR CHECK
NOTE: The temperature conditions when checking should not 
exceed the range shown in the diagram.
When the resistance between the sensor terminals is mea-
sured under two or more temperature conditions, the resis-
tance should approximately satisfy the illustrated values.

ACX01443

1

2

3

4

AB

ACX01443

REMOVAL STEPS

•

UNDER COVER (REFER TO 
GROUP 52A, INSTRUMENT 
PANEL 

P.52A-3

.)

1.

AIR THERMO SENSOR CLIP

2.

AIR THERMO SENSOR

•

UNDER COVER (REFER TO 
GROUP 52A, INSTRUMENT 
PANEL 

P.52A-3

.)

>>A<<

3.

HEATER WATER TEMPERATURE 
SENSOR CLIP

>>A<<

4.

HEATER WATER TEMPERATURE 
SENSOR

REMOVAL STEPS (Continued)

ACX00826AD

RESISTANCE
   (k

Ω)

TEMPERATURE ˚C(˚F)

20

25

30

15

10

5

0

0

20

40

60

80

100

-10

(32)

(68)

(104)

(140) (176) (212)

(14)

REAR A/C SWITCH AND FRONT REAR FAN SWITCH

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-154

.

AIR THERMO SENSOR CHECK
NOTE: The temperature conditions when checking should not 
exceed the range shown in the diagram.
When the resistance between the sensor terminals is mea-
sured under two or more temperature conditions, the resis-
tance should approximately satisfy the illustrated values.

REAR A/C SWITCH AND FRONT REAR FAN SWITCH

REMOVAL AND INSTALLATION

M1554009700011

The removal and installation is the same as for vehi-
cles with rear heater. (Refer to GROUP 55A, Rear 
Heater Switch and Front Rear Fan Switch 

P.55A-131

.)

INSPECTION

M1554009800029

The checking procedure is the same as for vehicles 
with rear heater. (Refer to GROUP 55A, Rear Heater 
Switch and Front Rear Fan Switch 

P.55A-132

.)

REAR A/C CONTROL UNIT

REMOVAL AND INSTALLATION

M1554010000027

The removal and installation is the same as for vehi-
cles with rear heater. (Refer to GROUP 55A, Rear 
A/C control unit 

P.55A-133

.)

REAR HEATER UNIT AND REAR BLOWER ASSEMBLY

REMOVAL AND INSTALLATION

M1554010200076

The removal and installation is the same as for the 
manual air conditioning (Refer to GROUP 55A, Rear 
Heater unit and Rear blower assembly 

P.55A-134

).

REAR HEATER UNIT DISASSEMBLY AND REASSEMBLY

M1554010300062

The disassembly and assembly of rear heater unit is 
the same as for the manual air conditioning (Refer to 
GROUP 55A, Rear Heater unit 

P.55A-136

).

INSPECTION

M1554010400058

The checking procedure is the same as for the man-
ual air conditioning (Refer to GROUP 55A, Rear 
Heater unit inspection 

P.55A-137

).

AC001043

RESISTANCE k

Ω

8

6

4

2

0

-10

0

 10

 20

 30

   40

TEMPERATURE ˚C(˚F)

AB

(14)

(32)

(50)

(86)

(104)

(68)

PHOTO SENSOR

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-155

REAR BLOWER DISASSEMBLY AND ASSEMBLY

M1554010600052

The disassembly and assembly of rear blower is the 
same as for the manual air conditioning (Refer to 
GROUP 55A, rear blower unit disassembly and reas-
sembly 

P.55A-138

).

INSPECTION

M1554010700059

The checking procedure is the same as for the man-
ual air conditioning (Refer to GROUP 55A, Rear 
blower assembly inspection 

P.55A-139

).

PHOTO SENSOR

REMOVAL AND INSTALLATION

M1554003100077

REMOVAL SERVICE POINT

.

<<A>> PHOTO SENSOR COVER/PHOTO SENSOR 
REMOVAL
1. Removal the photo sensor cover from the center-top of the 

instrument panel.

2. Pull the harness which is connected to the photo sensor out 

through the front of the instrument panel (the hole left after 
the clock or RV meter have been removed) together with the 
photo sensor. Then disconnect the photo sensor from the 
harness.

AC001703AB

1

2

REMOVAL STEPS

•

CLOCK OR RV METER (REFER 
TO GROUP 54A, RV METER 

P.54A-286

).

<<A>>

>>A<<

1.

PHOTO SENSOR COVER

<<A>>

>>A<<

2.

PHOTO SENSOR

REMOVAL STEPS (Continued)

AMBIENT TEMPERATURE SENSOR

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-156

INSTALLATION SERVICE POINT

.

>>A<< PHOTO SENSOR/PHOTO SENSOR COVER INSTAL-
LATION
Tie a cord to the photo sensor harness (at the connector end) 
as shown in the illustration, pass the harness through the photo 
sensor mounting hole, and then install the photo sensor and 
the photosensor cover from the center-top of the instrument 
panel.

INSPECTION

M1554003200029

.

PHOTO SENSOR CHECK
The blower speed should drop when the light-sensing section 
of the photo sensor is covered with your hand. If not, replace 
the photo sensor.

AMBIENT TEMPERATURE SENSOR

INSPECTION

M1554003500031

.

OUTSIDE AIR TEMPERATURE SENSOR CHECK
Measure the resistance between the sensor terminals under at 
least two temperatures. The resistance values should meet the 
values shown.
NOTE: The temperature should be within the shown range.

AC001704AB

CODE

AC001680AB

OUTSIDE AIR 
TENPERATURE SENSOR

REGISTANCE k

Ω

10

8

6

4

2

0

-10

0

10

20

30

40

(14) (32)

(50)

(68)

(86) (104)

TEMPERATURE ˚C (˚F)