Mitsubishi Montero (2004+). Manual - part 598

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-35

STEP 8. Check rear heater control unit connector E-01 and 
air mixing damper control motor and potentiometer 
connector G-25-2 for damage.

Q: Is rear heater control unit connector E-01 and air mixing 

damper control motor and potentiometer connector 
G-25-2 in good condition?
YES : Go to Step 9.
NO :  Repair or replace the connector. Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

. Check 

that the rear air conditioning works normally.

AC204176

CONNECTOR : E-01

AU

HARNESS SIDE

7

8

3

10 9

2

4

11

1312

5

14

6

1

AC204698

CONNECTOR : G-25-2

AI

HARNESS SIDE

7 6 5 4 3 2 1

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-36

STEP 9. Check the wiring harness between rear heater 
control unit connector E-01 (terminal 14, 6, 4, 7 and 8) and 
air mixing damper control motor and potentiometer 
connector G-25-2 (terminal 2, 1, 5, 3 and 7).

AC204176

CONNECTOR : E-01

AU

HARNESS SIDE

7

8

3

10 9

2

4

11

1312

5

14

6

1

AC204699

CONNECTORS : G-25-1, G-25-2

AK

G-25-2

G-25-2

G-25-1

G-25-1

HARNESS SIDE

7 6 5 4 3 2 1

8

4

7

3

5

1

6

2

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-37

NOTE: Also check intermediate connectors G-25-1, D-112, 
rear heater unit connectors G-25 and G-23. If intermediate con-
nector G-25-1, D-112, rear heater unit connector G-25 or G-23 
is damaged, repair or replace the connector as described in 
GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between rear heater control unit 

connector E-01 (terminal 14, 6, 4, 7 and 8) and air mixing 
damper control motor and potentiometer connector 
G-25-2 (terminal 2, 1, 5, 3 and 7) in good condition?
YES : Check that the rear air conditioning works normally.
NO :  Repair the wiring harness. Check that the rear air 

conditioning works normally.

AC204171 AL

CONNECTOR : D-112

2 3

27

32

28

33

16

15

4 5

19

18

29

17

34

7 8

35

22

21

9 10

30

36

31

37

25

24

23

6

20

1

14

26

11

13

12

38

AC204197

CONNECTORS : G-23, G-25
 <VEHICLES WITH HEATER>

AC

G-23

G-25

G-23

HARNESS SIDE

G-25

HARNESS SIDE

1

2

3

4

2

4 3

1

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-38

INSPECTION PROCEDURE 3: Rear Air Conditioning Outlet Air Temperature does not Increase 
<Vehicles with Rear Cooler>

Air Thermo Sensor and Magnetic Valve Circuit