Mitsubishi Outlander (2003+). Manual - part 534

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-31

Q: Is the check result normal?

YES : 

Go to Step 21.

NO : 

Go to Step 6.

STEP 6. Check the blower relay continuity.
 Refer to 

P.55A-57

.

Q: Is the blower relay continuity in good condition?

YES : 

Go to Step 7.

NO : 

Replace the blower relay.

STEP 7. Measure the voltage at C-207 blower 
relay connector.

(1) Remove the relay, and measure at the junction 

block side.

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

(3) Measure the voltage between terminal 1 and 

earth.

OK: System voltage

Q: Is the check result normal?

YES : 

 Go to Step 10.

NO : 

Go to Step 8.

STEP 8. Connector check: C-207 blower relay 
connector

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the connector. 

STEP 9. Check the wiring harness between C-207 
blower relay connector terminal No.1 and the 
ignition switch (IG2).

NOTE: Prior to the wiring harness inspection, check 
junction block connector C-203, and repair if 
necessary.

•

Check the blower relay 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.

AC210474

Connector: C-207

AJ

Junction block (Front view)

3

4

5

1

2

Junction block side

AC301541CB

Connector C-207
(Junction block side)

3

4

5

1

2

AC210474

Connector: C-207

AJ

Junction block (Front view)

3

4

5

1

2

Junction block side

AC210475

Connectors: C-203, C-207

AS

Junction block (Front view)

C-207

C-203

Harness side

C-203

4

6 5

3

2

1

3

4

5

1

2

Junction block side

C-207

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-32

STEP 10. Measure the resistance at C-207 blower 
relay connector.

(1) Remove the relay, and measure at the junction 

block side. 

(2) Measure the resistance Continuity between 

terminal 3 and body earth.

OK: 2 ohm or less

Q: Is the check result normal?

YES : 

 Go to Step 13.

NO : 

Go to Step 11.

STEP 11. Connector check: C-207 blower relay 
connector.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Repair the connector.

STEP 12. Check the wiring harness between 
C-207 blower relay connector terminal No.3 and 
earth.

NOTE: Prior to the wiring harness inspection, check 
junction block connectors C-205, and repair if neces-
sary.

•

Check the blower relay earth wires for open cir-
cuit.

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.

AC210474

Connector: C-207

AJ

Junction block (Front view)

3

4

5

1

2

Junction block side

AC301541CC

Connector C-207
(Junction block side)

3

4

5

1

2

AC210474

Connector: C-207

AJ

Junction block (Front view)

3

4

5

1

2

Junction block side

AC210475

Connectors: C-205, C-207

AT

Junction block (Front view)

C-207

C-205

Harness side

C-205

3

4

5

1

2

Junction block side

C-207

21

7

16 15

17

18

20 19

1

2

3

4

5

6

23 22

24

25

28

26

27

9

8

10

11

14

12

13

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-33

STEP 13. Measure the voltage at C-207 blower 
relay connector.

(1) Remove the relay, and measure at the junction 

block side.

(2) Measure the voltage between terminal 5 and 

body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

 Go to Step 16.

NO : 

Go to Step 14.   

STEP 14. Connector check: C-207 blower relay 
connector

Q: Is the check result normal?

YES : 

Go to Step 15.

NO : 

Repair the connector.

STEP 15. Check the wiring harness between 
C-207 blower relay connector terminal No.5 and 
fusible link (1).

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connectors C-116 and junction block connector 
C-204, and repair if necessary.

•

Check the blower relay 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 16. Check the blower switch continuity.

 Refer to 

P.55A-61

.

Q: Is the blower switch continuity in good condition?

YES : 

Go to Step 17.

NO : 

Replace the blower switch.

AC210474

Connector: C-207

AJ

Junction block (Front view)

3

4

5

1

2

Junction block side

AC301541CD

Connector C-207
(Junction block side)

3

4

5

1

2

AC210474

Connector: C-207

AJ

Junction block (Front view)

3

4

5

1

2

Junction block side

AC210475

Connectors: C-204, C-207

AU

Junction block (Front view)

C-207

C-204(B)

Harness side

C-204

3

4

5

1

2

Junction block side

C-207

1

AC301395AG

9

21

33

35

24

12

3 4

7

8

5 6

39

28

41

30

18

4243

31

1920

32

40

29

1617

38

27

15

37

36

26

14

13

25

2

1

34

23

11

10

22

Connector: C-116

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-34

STEP 17. Connector check: C-08 blower switch 
connector and C-207 blower relay connector

Q: Is the check result normal?

YES : 

Go to Step 18.

NO : 

Repair the connector.

STEP 18. Check the wiring harness between C-08 
blower switch connector terminal No.2 and C-207 
blower relay connector terminal No.4.

NOTE: Prior to the wiring harness inspection, check 
junction block connectors C-203, and repair if 
necessary.

•

Check the blower relay output line for open 
circuit.

Q: Is the check result normal?

YES : 

Go to Step 19.

NO : 

Repair the wiring harness.

AC301397

Connector: C-08

AR

Harness side

2
5

6

3

4

1

AC210474

Connector: C-207

AJ

Junction block (Front view)

3

4

5

1

2

Junction block side

AC301397

Connector: C-08

AR

Harness side

2
5

6

3

4

1

AC210475

Connectors: C-203, C-207

AS

Junction block (Front view)

C-207

C-203

Harness side

C-203

4

6 5

3

2

1

3

4

5

1

2

Junction block side

C-207