Mitsubishi Montero (2004+). Manual - part 612

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-91

STEP 29. Check the wiring harness between rear heater 
switch connector E-21 (terminal 1) <vehicles with rear 
heater>, rear cooler switch connector E-17 (terminal 1) 
<vehicles with rear cooler> or rear A/C switch connector 
E-22 (terminal 1) <vehicles with rear A/C> and ground.

Q: Is the wiring harness between rear heater switch 

connector E-21 (terminal 1) <vehicles with rear heater>, 
rear cooler switch connector E-17 (terminal 1) <vehicles 
with rear cooler> or rear A/C switch connector E-22 
(terminal 1) <vehicles with rear A/C> and ground in 
good condition?
YES : The rear blower motor should operate normally.
NO :  Repair the wiring harness. The rear blower motor 

should operate normally.

AC204193

CONNECTORS : E-17, E-21, E-22

AC

E-17, E-21, E-22

E-17 <VEHICLES WITH REAR COOLER>
E-21 <VEHICLES WITH REAR HEATER>
E-22 <VEHICLES WITH REAR A/C>

HARNESS SIDE

1
7

2
8

10

11

5

13

6

14

12

4

9

3

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-92

STEP 30. Check rear blower unit connector G-06 <vehicles 
with rear heater or rear cooler> or G-22 <vehicles with rear 
A/C> and rear blower motor connector G-06-1 <vehicles 
with rear heater or rear cooler> or G-22-1 <vehicles with 
rear A/C> for damage.

Q: Is rear blower unit connector G-06 <vehicles with rear 

heater or rear cooler> or G-22 <vehicles with rear A/C> 
and rear blower motor connector G-06-1 <vehicles with 
rear heater or rear cooler> or G-22-1 <vehicles with rear 
A/C> in good condition?
YES : Go to Step 31.
NO :  Repair or replace the connector. Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

. The 

blower motor should operate normally.

AC204197

CONNECTORS : G-06, G-22

AB

G-06

G-22

G-06

HARNESS SIDE

G-22

HARNESS SIDE

1

5

7

8

2

6

10

4

9

3

1

5

7

8

2

6

10

4

9

3

AC204699

CONNECTORS :G-06-1, G-22-1

AC

G-06-1
G-22-1

G-06-1

HARNESS SIDE

G-22-1

HARNESS SIDE

<VEHICLES WITH A/C>

<VEHICLES WITHOUT A/C>

1
2

1
2

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-93

STEP 31. Check the wiring harness between rear blower 
unit connector G-06 (terminal 7 and 8) <vehicles with rear 
heater or rear cooler> or G-22 (terminal 7 and 8) <vehicles 
with rear A/C> and rear blower motor connector G-06-1 
(terminal 1 and 2) <vehicles with rear heater or rear cooler> 
or G-22-1 (terminal 1 and 2) <vehicles with rear A/C>.

Q: Is the wiring harness between rear blower unit 

connector G-06 (terminal 7 and 8) <vehicles with rear 
heater or rear cooler> or G-22 (terminal 7 and 8) 
<vehicles with rear A/C> and rear blower motor 
connector G-06-1 (terminal 1 and 2) <vehicles with rear 
heater or rear cooler> or G-22-1 (terminal 1 and 2) 
<vehicles with rear A/C> in good condition?
YES : The rear blower motor should operate normally.
NO :  Repair the wiring harness. The rear blower motor 

should operate normally.

AC204197

CONNECTORS : G-06, G-22

AB

G-06

G-22

G-06

HARNESS SIDE

G-22

HARNESS SIDE

1

5

7

8

2

6

10

4

9

3

1

5

7

8

2

6

10

4

9

3

AC204699

CONNECTORS :G-06-1, G-22-1

AL

G-06-1
G-22-1

G-06-1

HARNESS SIDE

G-22-1

HARNESS SIDE

<VEHICLES WITH A/C>

<VEHICLES WITH REAR HEATER 
OR REAR COOLER>

1
2

1
2

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-94

INSPECTION PROCEDURE 6: Rear Blower Air amount cannot be Changed.

Rear A/C switch Circuit

AC204175

CONNECTORS : E-17, E-21, E-22

AL

E-17, E-21, E-22

AC204179

CONNECTORS : G-06, G-22

AY

G-06
G-22