Mitsubishi Montero (2004+). Manual - part 622

REAR HEATER SWITCH AND FRONT REAR FAN SWITCH

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-131

REAR HEATER SWITCH AND FRONT REAR FAN SWITCH

REMOVAL AND INSTALLATION

M1551005700032

AC001044

AC000724

1

2, 3, 4

AC

REMOVAL STEPS

1.

REAR FAN CONTROL SWITCH

2.

REAR HEATER SWITCH 
<VEHICLES WITH REAR HEATER> 

3.

 REAR COOLER SWITCH 
<VEHICLES WITH REAR COOLER> 

4.

 REAR A/C SWITCH <VEHICLES 
WITH REAR A/C>

REMOVAL STEPS (Continued)

REAR HEATER SWITCH AND FRONT REAR FAN SWITCH

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-132

INSPECTION

M1551005800039

REAR HEATER SWITCH <VEHICLES WITH REAR 
HEATER>, REAR COOLER SWITCH <VEHICLES 
WITH REAR COOLER> OR REAR A/C SWITCH 
<VEHICLES WITH REAR A/C> CHECK

.

BLOWER SWITCH CHECK
Follow the table below to check the rear blower switch for conti-
nuity.

.

REAR FAN SWITCH CHECK
Follow the table below to check the rear fan switch for continu-
ity.

.

TEMPERATURE SWITCH CHECK
Connect the tester between the connector terminal number 3 
and number 5, between the terminal number 5 and number 13 
and make sure that the resistance value changes slowly within 
the standard value.

Standard value: 0 

− 3 kΩ

REAR FAN CONTROL SWITCH

Follow the table below to check the front rear fan switch for 
continuity.

BLOWER SWITCH 
POSITION

TESTER 
CONNECTION 

SPECIFIED 
CONDITION

1 (LO)

1 

− 4

Less than 2 ohms

2 (ME)

1 

− 6

Less than 2 ohms

3 (HI)

1 

− 7

Less than 2 ohms

REAR FAN SWITCH 
POSITION

TESTER 
CONNECTION 

SPECIFIED 
CONDITION

OFF

8 

− 9

Less than 2 ohms

ON (while pushing)

2 

− 8

Less than 2 ohms

AC205161

1
7

2
8

10 11

5

13

6

14

12

4

9

3

FRONT REAR FAN 
SWITCH POSITION

TESTER 
CONNECTION 

SPECIFIED 
CONDITION

OFF

1 

− 2

Less than 2 ohms

ON

2 

− 5

Less than 2 ohms

AC001045 AB

REAR A/C CONTROL UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-133

REAR A/C CONTROL UNIT

REMOVAL AND INSTALLATION

M1554010000038

ACX01453

AE

1, 2, 3

REMOVAL STEPS

1.

REAR HEATER CONTROL UNIT

2.

REAR COOLER CONTROL UNIT

3.

REAR A/C CONTROL UNIT

REMOVAL STEPS (Continued)

REAR HEATER UNIT

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-134

REAR HEATER UNIT

REMOVAL AND INSTALLATION

M1554010200087

AC001676 AC

6

5

1

N

2

3

4

14 ± 0.5 N·m
124 ± 4 in-lb

33 ± 1 N·m
24 ± 1 ft-lb

PIPE CONNECTIONS

O-RING

2, 3

A/C COMPRESSOR OIL:
DENSO OIL 8

7