Mitsubishi Montero (2004+). Manual — part 602

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-51

NOTE: Also check intermediate connector D-112. If intermedi-
ate connector D-112 is damaged, repair or replace the connec-
tor as described in GROUP 00E, Harness Connector
Inspection

P.00E-2

.

Q: Is the wiring harness between rear cooler unit

connector G-13 (terminal 1, 4 and 3) and rear cooler
control unit connector E-09 (terminal 1, 8 and 12) 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

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-52

INSPECTION PROCEDURE 4: Rear Air Conditioning Outlet Air Temperature does not Increase
<Vehicles with Rear A/C>

Air Mixing Damper Control Motor, Air Thermo Sensor and Magnetic Valve Circuit

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-53

AC204170

CONNECTORS : D-01, D-30

CZ

D-01

D-30

AC204171

CONNECTOR : D-112

AU

AC204173

CONNECTORS : D-208, D-210

BF

D-208

D-210

AC204176

CONNECTORS : E-06, E-12, E-20

BL

E-20

E-06

E-12

AC204175

CONNECTOR : E-22

AK

AC204179

CONNECTORS : G-24, G-26

BA

G-24

G-26

AC204698 AU

G-26-1

G-26-2

CONNECTORS : G-26-1, G-26-2,
G-26-3, G-26-4

G-26-3

G-26-4

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-54

DIAGNOSIS

STEP 1. Check the rear A/C switch (temperature control
switch).

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

Q: Is the check result normal?

YES : Go to Step 2.
NO : Replace the rear air-conditioner switch.

STEP 2. Measure the resistance at rear A/C control unit
connector E-20.

(1) Disconnect rear A/C control unit connector E-20, and

measure at the wiring harness side.

(2) Turn the rear fan switch to the "ON" position.
(3) Turn the Rear fan control switch to the "OFF" position.

(4) Measure the resistance between terminal 13 and ground.

• The measured value should be 2 ohms or less.

Q: Does the measured resistance value correspond with

this range?
YES : Go to Step 5.
NO : Go to Step 3.

AC205161

1
7

2
8

10 11

5

13

6

14

12

4

9

3

AC204176

CONNECTOR : E-20

AY

HARNESS SIDE

7

8

3

10 9

2

4

11

1312

5

14

6

1

AC204738

7

8

3

10 9

2

4

11

1312

5

14

6

1

CH

HARNESS SIDE : E-20