Mitsubishi Montero Sport (2004+). Manual - part 602

HEATER CONTROL ASSEMBLY, A/C SWITCH AND INSIDE/OUTSIDE CHANGEOVER SWITCH

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55-35

HEATER CONTROL ASSEMBLY, A/C SWITCH AND 

INSIDE/OUTSIDE CHANGEOVER SWITCH

REMOVAL AND INSTALLATION

M1552012400058

INSTALLATION SERVICE POINT

.

>>A<< HEATER CONTROL ASSEMBLY INSTALLATION
Follow the steps below to install the air outlet changeover 
damper link cable and air mix damper lever cable.

Pre-removal and Post-installation Operation
• Floor Console Assembly, Knee Protector Cover, Master 

Bezel Assembly, Glove Box Assembly, Center Under 
Cover Removal and Installation (Refer to GROUP52A, 

Instrument Panel 

P.52A-37

.)

• Foot Duct Removal and Installation (Refer to 

P.55-60

.)

AC002845

1

2

3

4

5

6

7

8

AB

REMOVAL STEPS

1.

A/C SWITCH

2.

HEATER CONTROL PANEL

3.

REAR HEATER INDICATOR 
<VEHICLES WITH REAR 
HEATER>

>>A<<

4.

HEATER CONTROL ASSEMBLY

5.

KNOB

6.

BLOWER SWITCH

7.

INSIDE/OUTSIDE AIR 
CHANGEOVER SWITCH

8.

DEFROSTER SWITCH

REMOVAL STEPS (Continued)

HEATER CONTROL ASSEMBLY, A/C SWITCH AND INSIDE/OUTSIDE CHANGEOVER SWITCH

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55-36

1. Set the air outlet changeover control knob on the heater 

control assembly to the defroster position.

2. Set the air outlet changeover damper link of the heater unit 

to the defroster position as shown in the illustration, and 
then connect the cable to the link pin.

3. Push the outer cable in the arrow so that there is no 

looseness, and then secure it with clip.

4. Set the temperature control knob on the heater control 

assembly to the maximum hot position.

5. Set the air mix damper lever of the heater unit to the 

maximum hot position as shown in the illustration, and then 
connect the cable to the lever pin.

6. Push the outer cable in the direction of the arrow so that 

there is no looseness, and then secure it with clip.

7. After installation, ensure that each damper operates 

smoothly by operating the heater control assembly knob.

INSPECTION

M1556001100152

A/C SWITCH CONTINUITY CHECK

INSIDE/OUTSIDE AIR DAMPER CONTROLLER 
CONTINUITY CHECK

.

1. DEFROSTER SWITCH

.

AC002846 AB

DEFROSTER
POSITION

AIR OUTLET
CHANGEOVEER
DAMPER LINK

FACE POSITION

AC002847AB

MAXIMUM COOL POSITION

AIR MIX DAMPER

LEVER

LEVER PIN

MAXIMUM HOT POSITION

SWITCH 
POSITION

TESTER 
CONNECTION 

SPECIFIED 
CONDITION

At the ON position

1 

− 4

Less than 2 ohms

At the OFF position 1 

− 4

Open circuit

AC002848AB

OFF

ON

AIR OUTLET 
CHANGEOVER 
CONTROL KNOB 
POSITION

TESTER 
CONNECTION 

SPECIFIED 
CONDITION

At the 
"DEFROSTER, 
DEFROSTER/FOO
T" position

5 

− 7

Less than 2 ohms

Other position

5 

− 7

Open circuit

AC002849

DEFROSTER

SWITCH

AB

HEATER CONTROL ASSEMBLY, A/C SWITCH AND INSIDE/OUTSIDE CHANGEOVER SWITCH

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55-37

2. INSIDE/OUTSIDE AIR DAMPER CHANGEOVER RELAY
NOTE: Battery voltage should measure supplied when the air 
outlet changeover knob is at the defroster or defroster/foot 
position.

.

AIR OUTLET 
CHANGEOVER 
CONTROL KNOB 
POSITION

BATTERY CONNECTION TESTER 

CONNECTION

SPECIFIED 
CONDITION

At the 
"DEFROSTER, 
DEFROSTER/F
OOT" position

• Connect 

terminal 7 to 
the positive 
battery 
terminal

• Connect 

terminal 3 to 
the negative 
battery 
terminal

6 

− 4

Less than 2 
ohms

OTHER 
POSITION

• Connect 

terminal 3 to 
the positive 
battery 
terminal

• Connect 

terminal 7 to 
the negative 
battery 
terminal

6 

− 4

Open circuit

HEATER CONTROL ASSEMBLY, A/C SWITCH AND INSIDE/OUTSIDE CHANGEOVER SWITCH

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55-38

3. WATER SHUT RELAY RELAY
NOTE: When the temperature control knob is at the "MAX 
COOL" position, power is supplied to the water shut relay.

INSIDE/OUTSIDE AIR CHANGEOVER SWITCH

TEMPERATURE 
CONTROL KNOB 
POSITION

BATTERY CONNECTION TESTER 

CONNECTION

SPECIFIED 
CONDITION

At the "MAX 
COOL" position

• Connect 

terminal 7 to 
the positive 
battery 
terminal

• Connect 

terminal 3 to 
the negative 
battery 
terminal

3 

− 8

Less than 2 
ohms

At the other than 
"MAX COOL" 
position

• Connect 

terminal 7 to 
the positive 
battery 
terminal

• Connect 

terminal 3 to 
the negative 
battery 
terminal

1 

− 3

Less than 2 
ohms

SWITCH 
POSITION

TESTER 
CONNECTION 

SPECIFIED 
CONDITION

Inside air 
recirculation 
(RECIRC)

4 

− 6

Less than 2 ohms

Outside air 
induction (FRESH)

4 

− 5 

Less than 2 ohms

AC002850

INSIDE/OUTSIDE AIR

CHANGEOVER SWITCH

AB