Mitsubishi Outlander (2003+). Manual - part 535

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-35

STEP 19. Connector check: C-12 blower motor 
connector and C-08 blower switch connector

Q: Is the check result normal?

YES : 

Go to Step 20.

NO : 

Repair the connector.

STEP 20. Check the wiring harness between C-12 
blower motor connector terminal No.1 and C-08 
blower switch connector terminal No.6.

•

Check the blower motor power supply 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 21. Check the blower fan and motor 
operation.
 Refer to 

P.55A-67

.

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 : 

Replace the blower motor.

AC301398

Connectors: C-08, C-12

C-12

AL

C-12

Harness side

2
5

6

3

4

1

C-08

C-08

2

1

AC301398

Connectors: C-08, C-12

C-12

AL

C-12

Harness side

2
5

6

3

4

1

C-08

C-08

2

1

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-36

INSPECTION PROCEDURE 5: Blower Air Amount cannot be Changed.

COMMENTS ON TROUBLE SYMPTOM
If the blower air amount can not be changed when 
the blower switch is operated, the blower switch may 
be defective.

TROUBLESHOOTING HINTS

•

Malfunction of the resistor

•

Damaged the wiring harness or connectors

•

Malfunction of the blower switch

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 : 

Go to STEP 2.

NO : 

Refer to Inspection procedure 4 "Blower fan 
and motor do not turn 

P.55A-29

."

STEP 2. Check the blower switch continuity.
 Refer to 

P.55A-61

.

Q: Is the blower switch continuity in good condition?

YES : 

Go to Step 3.

NO : 

Replace the blower switch.

STEP 3. Check the resistor resistance value.
 Refer to 

P.55A-67

.

Q: Is the measured value at the standard value?

YES : 

Go to Step 4.

NO : 

Replace the resistor.

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
RELAY

BLOWER
SWITCH

BLOWER
MOTOR

RESISTOR

Blower Switch and Resistor Circuit

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-37

STEP 4. Connector check: C-08 blower switch 
connector and C-11 resistor connector

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector.

STEP 5. Check the wiring harness between C-08 
blower switch connector (terminals 1, 4 and 5) 
and C-11 resistor connector (terminals 4, 1 and 
3).

•

Check the blower switch output line for open 
circuit.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the wiring harness.

AC301398

Connectors: C-08, C-11

C-08

C-08

C-11

AM

1
3

2

4

C-11

Harness side

2
5

6

3

4

1

AC301398

Connectors: C-08, C-11

C-08

C-08

C-11

AM

1
3

2

4

C-11

Harness side

2
5

6

3

4

1

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-38

STEP 6. Connector check: C-11 resistor 
connector and C-12 blower motor connector

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the connector.

STEP 7. Check the wiring harness between C-12 
blower motor connector (terminal 1) and C-11 
resistor connector (terminal 2).

•

Check the blower motor power supply line for 
open circuit.

Q: Is the check result normal?

YES : 

No action to be taken.

NO : 

Repair the wiring harness.

AC301398

Connectors: C-11, C-12

C-12

C-11

AN

1
3

2

4

C-11

Harness side

C-12

2

1

AC301398

Connectors: C-11, C-12

C-12

C-11

AN

1
3

2

4

C-11

Harness side

C-12

2

1