Mitsubishi Montero (2004+). Manual — part 610

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-83

STEP 19. Check the wiring harness between rear heater
switch connector E-21 (terminal 2) <vehicles with rear
heater>, rear cooler switch connector E-17 (terminal 2)
<vehicles with rear cooler> or rear A/C switch connector
E-22 (terminal 2) <vehicles with rear A/C> and ground.

Q: Is the wiring harness between rear heater switch

connector E-21 (terminal 2) <vehicles with rear heater>,
rear cooler switch connector E-17 (terminal 2) <vehicles
with rear cooler> or rear A/C switch connector E-22
(terminal 2) <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-84

STEP 20. Check rear blower relay connector D-213 and
rear A/C unit connector G-06 <vehicles with rear heater or
rear cooler> or rear A/C unit connector G-22 <vehicles with
rear A/C> for damage.

Q: Is rear blower relay connector D-213 and rear A/C unit

connector G-06 <vehicles with rear heater or rear
cooler> or rear A/C unit connector G-22 <vehicles with
rear A/C> in good condition?
YES : Go to Step 21.
NO : Repair or replace the connector. Refer to GROUP

00E, Harness Connector Inspection

P.00E-2

. The

blower motor should operate normally.

AC204173

CONNECTOR : D-213

AY

JUNCTION
BLOCK SIDE

2 1

5

4

3

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

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-85

STEP 21. Check the wiring harness between rear blower
relay connector D-213 (terminal 4) and rear A/C unit
connector G-06 (terminal 7) <vehicles with rear heater or
rear cooler> or rear A/C unit connector G-22 (terminal 7)
<vehicles with rear A/C>.

Q: Is the wiring harness between rear blower relay

connector D-213 (terminal 4) and rear A/C unit
connector G-06 (terminal 7) <vehicles with rear heater
or rear cooler> or rear A/C unit connector G-22 (terminal
7) <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.

STEP 22. Check the rear blower motor.

When battery voltage is applied between the terminals, check
that the motor operates. Also, check that there is no abnormal
noise.
Q: Is the check result normal?

YES : Go to Step 23.
NO : Replace the rear blower motor.

AC204173

CONNECTOR : D-213

AY

JUNCTION
BLOCK SIDE

2 1

5

4

3

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

AC001038 AB

REAR AIR CONDITIONING DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-86

STEP 23. Measure the resistance at rear blower motor
connector G-06-1 <vehicles with rear heater or rear cooler>
or G-22-1 <vehicles with rear A/C>.

(1) Disconnect connector G-06-1 or G-22-1 and measure the

resistance at the wiring harness side.

(2) Rear heater switch: "3" position <vehicles with rear heater>
(3) Rear cooler switch: "3" position <vehicles with rear cooler>
(4) Rear A/C switch: "3" position <vehicles with rear A/C>

(5) Measure the resistance value between terminal 1 and

ground.

• 2 ohm or less

Q: Does the measured resistance value correspond with

this range?
YES : Go to Step 30.
NO : Go to Step 24.

STEP 24. Check the rear blower switch.

Follow the table below to check the rear blower switch for conti-
nuity.

Q: Is the check result normal?

YES : Go to Step 25.
NO : Replace the rear heater switch <vehicles with rear

heater>, rear cooler switch <vehicles with rear
cooler> or rear A/C switch <vehicles with rear A/C>.

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

AC204738 CL

HARNESS SIDE : G-06-1, G-22-1

1
2

BLOWER SWITCH
POSITION

TESTER
CONNECTION

SPECIFIED
CONDITION

1

1

− 4

Less than 2 ohms

2

1

− 6

Less than 2 ohms

3

1

− 7

Less than 2 ohms

AC205161

1
7

2
8

10 11

5

13

6

14

12

4

9

3