Mitsubishi Outlander (2003+). Manual - part 533

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-27

STEP 36. Connector check: C-141 engine-ECU or 
engine-A/T-ECU connector and C-06 A/C-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 37.

NO : 

Repair the connector.

STEP 37. Check the wiring harness between 
C-141 engine-ECU or engine-A/T-ECU connector 
terminal No.78 and C-06 A/C-ECU connector 
terminal No.5.

NOTE: Prior to the wiring harness inspection, check 
intermediate connector C-104, and repair if 
necessary.

•

Check the communication line for open or short 
circuit.

Q: Is the check result normal?

YES : 

Go to Step 38.

NO : 

Repair the wiring harness.

AC308718

Connector: C-06 <LHD>

AZ

9

1

15

7

4

12 1110

2

3

13

5

14

6

16

8

C-06(B)

Harness side

AC309486AB

Connector: C-141 <2400-LHD>

Harness side

C-141 (GR)

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

AC308719

AR

Connectors: C-06, C-104 <LHD>

C-06(B)

C-06

9

1

15

7

4

121110

2

3

13

5

14

6

16

8

Harness side

C-104(B)

15

1
8

3

10

2
9

11

4

13

12

5

14

16

7

6

C-104

AC309486AB

Connector: C-141 <2400-LHD>

Harness side

C-141 (GR)

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-28

STEP 38. Check the wiring harness between 
C-141 engine-ECU or engine-A/T-ECU connector 
terminal No.69 and C-06 A/C-ECU connector 
terminal No.4.

NOTE: Prior to the wiring harness inspection, check 
intermediate connector C-104, and repair if 
necessary.

•

Check the communication line for open or short 
circuit.

Q: Is the check result normal?

YES : 

Replace the manual air conditioner control 

panel (A/C-ECU) or engine-ECU.

NO : 

Repair the wiring harness.

AC308719

AR

Connectors: C-06, C-104 <LHD>

C-06(B)

C-06

9

1

15

7

4

121110

2

3

13

5

14

6

16

8

Harness side

C-104(B)

15

1
8

3

10

2
9

11

4

13

12

5

14

16

7

6

C-104

AC309486AB

Connector: C-141 <2400-LHD>

Harness side

C-141 (GR)

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-29

INSPECTION PROCEDURE 4: Blower Fan and Motor do not Turn.

COMMENTS ON TROUBLE SYMPTOM
If the blower fan and motor does not turn when the 
blower switch is operated, the blower switch may be 
defective.

TROUBLESHOOTING HINTS

•

Malfunction of the blower relay

•

Malfunction of the blower switch

•

Damaged the wiring harness or connectors

•

Malfunction of the blower motor

DIAGNOSIS

STEP 1. Check that the blower motor operates 
when the blower switch is moved to the "4 (HI) " 
position.
(1) Turn the ignition switch to the "ON" position.
(2) Turn the blower switch to the "4 (HI) " position.

Q: Does the blower motor operate when the blower 

switch is moved to the "4 (HI) " position?
YES : 

Refer to Inspection procedure 5 "Blower air 

amount cannot be changed 

P.55A-36

."

NO : 

Go to Step 2.

STEP 2. Measure the resistance at the C-12 
blower motor connector.

FUSIBLE
LINK

IGNITION
SWITCH (IG2)

BLOWER
RELAY

BLOWER
SWITCH

BLOWER
MOTOR

1

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        

Blower Motor Circuit

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-30

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Measure the resistance between terminal 2 and 

body earth.

OK: 2 ohm or less

Q: Is the check result normal?

YES : 

 Go to Step 5.

NO : 

Go to Step 3.

STEP 3. Connector check: C-12 blower motor 
connector

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the connector.

STEP 4. Check the wiring harness between C-12 
blower motor connector terminal No.2 and body 
earth.

•

Check the blower motor earth line for open 
circuit.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00, How to 
Cope with Intermittent Malfunction 

P.00-6

).

NO : 

Repair the wiring harness.

STEP 5. Measure the voltage at C-12 blower 
motor connector.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Turn the ignition switch to the "ON" position.
(3) Turn the blower switch to the "4 (HI) " position.

(4) Measure the voltage between terminal 1 and 

body earth.

OK: System voltage

AC301397

Connector: C-12

AQ

Harness side

2

1

AC301541 BZ

Connector C-12
(Harness side)

2

1

AC301397

Connector: C-12

AQ

Harness side

2

1

AC301397

Connector: C-12

AQ

Harness side

2

1

AC301397

Connector: C-12

AQ

Harness side

2

1

AC301541CA

Connector C-12
(Harness side)

2

1