Mitsubishi Montero (2002-2004). Manual - part 103

AUTO A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-105

INSPECTION PROCEDURE 9: Condenser Fan does not Operate.

Condenser Fan Motor Circuit

AUTO A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-106

AC204167

CONNECTORS : A-03, A-15, 
A-16, A-17, A-26

BB

A-03(B)

A-15

A-16

A-17(GR)

A-26(B)

AC204183

CONNECTOR : A-09X

AR

AC204170

CONNECTOR : D-28

BB

AC204171 BA

D-132(GR)

CONNECTOR : D-132

AC204173

CONNECTORS : D-208, D-210

BF

D-208

D-210

AUTO A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-107

DIAGNOSIS

Required Special Tool:

• MB991223: Test Harness Set

STEP 1. Check the powertrain control module.
(1) Disconnect powertrain control module connector D-132.
(2) Turn the ignition switch to the "ON" position.

(3) Ground harness-side powertrain control module connector 

D-132 (terminal 17). 

(4) The condenser fan motor should run.
Q: Is the check result normal?

YES : Replace the powertrain control module. Check that 

the condenser motor works normally.

NO :   Go to Step 2.

STEP 2. Check the condenser fan relay continuity.
Follow the table below to check the condenser fan relay for 
continuity.

Q: Is the condenser fan relay in good condition?

YES : Go to Step 3.
NO :  Replace the A/C compressor relay. Check that the 

condenser motor works normally.

AC204171

CONNECTOR : D-132

D-132(GR)

D-132(GR)

AS

HARNESS SIDE

8

23

1110

24

9

6

22

7

16

17

15

3

4

1312

19

20
2726

2

1
5

14
21

25

18

AC205177

8

23

1110

24

9

6

22

7

16

17

15

3

4

13 12

19

20
27 26

2

1
5

14

21

25

18

HARNESS SIDE : D-132

AB

BATTERY VOLTAGE

TESTER 
CONNECTION 

SPECIFIED 
CONDITION

Not applied

4 

− 5

Open circuit

• Connect terminal 3 to 

the positive battery 
terminal

• Connect terminal 1 to 

the negative battery 
terminal

4 

− 5

Less than 2 
ohms

AC204715

3

1

4

5

AD

CONDENSER 
FAN RELAY

BATTERY

AUTO A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-108

STEP 3. Measure the voltage at condenser motor 
connector A-26. 
(1) Disconnect A/C compressor connector A-26 and measure 

the voltage at the harness side.

(2) Turn the ignition switch to the "ON" position.

(3) Ground powertrain control module connector D-132 

(terminal 17). 

(4) Measure the voltage between terminal 1 and ground.

• The measured value should be approximately 12 volts 

(battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES :  Go to Step 14.
NO :   Go to Step 4.

AC204167

CONNECTOR : A-26

AX

A-26(B)

A-26(B)

1

2

HARNESS SIDE

AC205177

8

23

1110

24

9

6

22

7

16

17

15

3

4

13 12

19

20
27 26

2

1
5

14

21

25

18

HARNESS SIDE : D-132

AB

AC204738 CX

HARNESS SIDE : A-26

1

2