Mitsubishi Montero (2002-2004). Manual — part 65

ON-VEHICLE SERVICE

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-123

2. Tighten all compressor mounting bolts, clutch mounting bolt,

and compressor drive belt. Check to assure clutch coil is
tight (no rotation or wobble).

3. Check refrigerant hoses for rubbing or interference that can

cause unusual noises.

4. Check refrigerant charge. (Refer to

P.55A-119

.)

5. Recheck compressor noise as in Step 1.
6. If noise still exists, loosen compressor mounting bolts and re

torque. Repeat Step 1.

7. If noise continues, replace compressor and repeat Step 1.

POWER RELAY CHECK

M1552008800235

.

FRONT BLOWER RELAY
Follow the table below to check the front blower relay for conti-
nuity.

.

BATTERY VOLTAGE

TESTER
CONNECTION

SPECIFIED
CONDITION

Not applied

2

− 5

Open circuit

• Connect terminal 3

to the positive
battery terminal

• Connect terminal 1

to the negative
battery terminal

2

− 5

Less than 2 ohms

AC204714AB

FRONT BLOWER RELAY

ON-VEHICLE SERVICE

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-124

A/C COMPRESSOR RELAY, CONDENSER FAN RELAY
Follow the table below to check the A/C compressor relay and
condenser fan for continuity.

.

REAR BLOWER RELAY
Follow the table below to check the rear blower relay for conti-
nuity.

BATTERY VOLTAGE

TESTER
CONNECTION

SPECIFIED
CONDITION

Not applied

4

− 5

Open circuit

• Connect terminal 3 to

the positive battery
terminal

• Connect terminal 1 to

the negative battery
terminal

4

− 5

Less than 2
ohms

AC204715

3

1

4

5

AB

CONDENSER
FAN RELAY

A/C
COMPRESSOR
RELAY

BATTERY

BATTERY VOLTAGE

TESTER
CONNECTION

SPECIFIED
CONDITION

Not applied

4

− 5

Open circuit

• Connect terminal 1

to the positive
battery terminal

• Connect terminal 3

to the negative
battery terminal

4

− 5

Less than 2 ohms

AC204714

REAR BLOWER RELAY

AC

ON-VEHICLE SERVICE

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-125

IDLE-UP OPERATION CHECK

M1552001600263

.

1. Before inspection and adjustment, set vehicle in the

following condition:

• Engine coolant temperature: 80 − 90 °C (176 − 194 °F)

• Lights, electric cooling fan and accessories: Set to OFF

• Transmission: "N" or "P" position

• Steering wheel: Straightforward

2. Check whether or not the idling speed is the standard value.

Standard value: 700

± 50 r/min

NOTE: There is no necessity to make an adjustment,
because the idling speed is automatically adjusted by the
idle speed control system. If, however, there occurs a devia-
tion from the standard value for some reason, check the idle
speed control system. Refer to GROUP 13A, On-vehicle
Service

P.11A-7

.

3. When the A/C is running after turning the A/C switch to ON,

and the blower switch to the MH or HI position, check to be
sure that the idle speed is at the standard value.

Standard value:

NOTE: It depends on the outside air temperature signal
whether a low load, a middle load or a high load is applied to
the air conditioning. The PCM receives the signal via the
automatic compressor controller and determines whether
the air conditioning is working under high, middle or low
load.

VEHICLE CONDITION

IDLE-UP
SPEED r/min

When the air conditioning is working under
low load (Outside air temperature sensor:
ON)

700

± 50

When the air conditioning is working under
middle load (Outside air temperature
sensor: OFF)

800

± 50

When the air conditioning is working under
high load (Outside air temperature sensor:
OFF)

1,000

± 50

HEATER CONTROL ASSEMBLY, A/C SWITCH AND INSIDE/OUTSIDE CHANGEOVER SWITCH

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-126

HEATER CONTROL ASSEMBLY, A/C SWITCH AND INSIDE/

OUTSIDE CHANGEOVER SWITCH

REMOVAL AND INSTALLATION

M1552012400047

INSTALLATION SERVICE POINTS

.

>>A<< AIR OUTLET CHANGEOVER DAMPER LEVER
CABLE INSTALLATION
1. Set the air outlet changeover control knob on the heater

control assembly to the defroster position.

2. Set the air outlet changeover damper lever of the heater/

cooler unit to the defroster position as shown in the
illustration, and then connect the cable to the link pin.

3. Push the outer cable in the direction of the arrow so that

there is no looseness, and then secure it with the clip.

4. After installation, ensure that each damper operates

smoothly by operating the heater control assembly knob.

.

>>B<< AIR MIX DAMPER LEVER CABLE INSTALLATION
1. Set the temperature control knob on the heater control

assembly to the maximum hot position.

Pre-removal and Post-installation Operation
• Front Driver's Side Under Cover Removal and Installation

(Refer to GROUP 52A, Instrument Panel

P.52A-2

.)

• Floor Console Removal and Installation (Refer to GROUP

52A, Floor Console

P.52A-7

.)

• Foot Duct C and Foot Duct D Removal and Installation

(Refer to

P.55A-155

.)

AC000934 AB

1

2

3

4

REMOVAL STEPS

1.

CENTER PANEL (REFER TO
GROUP 52A, INSTRUMENT
PANEL

P.52A-2

.)

>>B<<

2.

AIR MIX DAMPER LEVER CABLE

>>A<<

3.

AIR OUTLET CHANGEOVER
DAMPER LEVER CABLE

4.

HEATER CONTROL ASSEMBLY

REMOVAL STEPS (Continued)

AC000932 AB

DEFROSTER POSITION

FACE POSITION