Mitsubishi Outlander (2003+). Manual - part 551

TROUBLESHOOTING

AUTOMATIC AIR CONDITIONER

55B-19

YES : 

Replace the automatic air conditioner 

control panel (A/C-ECU).

NO : 

Repair the wiring harness.

Diagnosis code 32: Mode selection damper control motor potentiometer system

COMMENTS ON TROUBLE SYMPTOM
This code is set when the mode selection damper 
control motor potentiometer does not send any 
signal to the A/C-ECU due to short or open circuit.

Possible causes

•

Malfunction of the mode selection damper control 
motor and potentiometer

•

Malfunction of the automatic air conditioner 
control panel (A/C-ECU)

•

Damaged the wiring harness or connectors

DIAGNOSIS

Step 1. Check the mode selection damper control 
motor and potentiometer.

Refer to 

P.55B-102

.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Replace the mode selection damper control 
motor and potentiometer.

HEATER WATER 
TEMPERATURE 
SENSOR

Wire colour code
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue
BR : Brown     O : Orange     GR : Gray     R : Red     P : Pink     V : Violet   

MODE SELECTION 
DAMPER CONTROL 
MOTOR AND 
POTENTIOMETER

A/C-ECU

Mode Selection Damper Control Motor Potentiometer Circuit

TROUBLESHOOTING

AUTOMATIC AIR CONDITIONER

55B-20

Step 2. Connector check: C-27 A/C-ECU 
connector and C-315 mode selection damper 
control motor and potentiometer connector

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the connector.

AC301397

Connector: C-27 
<LHD>

AX

C-27(B)

Harness side

8

2

10 9

1

5

3

4

6

7

20191817161514131211

AC308735

Connector: C-27 <RHD>

AY

C-27(B)

Harness side

8

2

10 9

1

5

3

4

6

7

20191817161514131211

AC309435

Connector: C-315 <LHD>

AE

Harness side

2
6 5

1
3

4

AC308739

Connector: C-315 <RHD>

AF

Harness side

2
6 5

1
3

4

TROUBLESHOOTING

AUTOMATIC AIR CONDITIONER

55B-21

Step 3. Check the wiring harness between C-27 
A/C-ECU connector (terminals 10, 6 and 20) and 
C-315 mode selection damper control motor and 
potentiometer connector (terminals 2, 5 and 6).

NOTE: Prior to the wiring harness inspection, check 
intermediate connector C-36 and heater water 
temperature sensor connector C-314, and repair if 
necessary.

•

Check the potentiometer power supply, earth and 
signal line for open or short circuit.

Q: Is the check result normal?

YES : 

Malfunction of the automatic air conditioner 

control panel (A/C-ECU)

NO : 

Repair the wiring harness.

AC301398

Connectors: C-27, C-36 <LHD>

C-27(B)

C-27

C-36

BE

C-36

Harness side

8

2

10 9

1

5

3

4

6

7

20191817161514131211

1 2

4

3

12

11

10

9

8

7

6

13

5

AC308736

Connectors: C-27, C-36 <RHD>

C-27(B)

C-27

C-36

AK

C-36

Harness side

8

2

10 9

1

5

3

4

6

7

20191817161514131211

1 2

4

3

12

11

10

9

8

7

6

13

5

AC309436

Connectors: C-314, C-315 <LHD>

Harness side

C-314

C-315

2

1

C-314

AD

C-315

2
6 5

1
3

4

Harness side

AC308740

Connectors: C-314, C-315 <RHD>

Harness side

C-314

C-315

2

1

C-314

AD

C-315

2
6 5

1
3

4

Harness side

TROUBLESHOOTING

AUTOMATIC AIR CONDITIONER

55B-22

Diagnosis code 41: Air mixing damper control motor system

COMMENTS ON TROUBLE SYMPTOM
This code is set when the air mixing damper cannot 
be rotated to the preset opening angle.

Possible causes

•

Malfunction of the air mixing damper control 
motor and potentiometer

•

Malfunction of the automatic air conditioner 
control panel (A/C-ECU)

•

Damaged the wiring harness or connectors

DIAGNOSIS

Step 1. Check the air mixing damper control 
motor and potentiometer.

Refer to 

P.55B-102

.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Replace the air mixing damper control 
motor and potentiometer.

AIR MIXING DAMPER CONTROL 
MOTOR AND POTENTIOMETER

MOTOR
DRIVE CIRCUIT

A/C-ECU

Wire colour code
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue
BR : Brown     O : Orange     GR : Gray     R : Red     P : Pink     V : Violet   

Air MIxing Damper Control motor Circuit