Mitsubishi Outlander: Heater Unit, Heater Core,
Blower Assembly and
Evaporator Unit
HEATER UNIT AND FRONT DECK CROSSMEMBER ASSEMBLY REMOVAL AND
INSTALLATION
Pre-removal operation
- Engine Coolant Draining
- Discharging refrigerant
- Front seat assembly removal
- Rear heater duct removal
- Instrument panel assembly removal
Post-installation Operation
- Instrument panel assembly installation
- Rear heater duct installation
- Front seat assembly installation
- Engine Coolant Refilling
- Charging refrigerant
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Removal steps
- Wiring harness and clamps
- Heater hose
- Suction pipe
- Liquid pipe B
- O-ring
- Drain hose
- Front deck crossmember
- Heater unit assembly
REMOVAL SERVICE POINTS
CONNECTOR DISCONNECTION
Disconnect the following connectors to remove the front deck
crossmember.
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SUCTION FLEXIBLE HOSE / LIQUID PIPE
B DISCONNECTION
CAUTION
Use the plug which is not breathable because A/C compressor
oil or receiver have high hygroscopicity.
Plug the removed nipple of the pipe, hose and expansion valve
to prevent the entry of dust and dirt.
DISASSEMBLY AND ASSEMBLY
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Disassembly steps
- Air intake duct
- Clean air filter cover
- Clean air filter
- Blower motor
- Power transistor
- Expansion valve cover
- Expansion valve
- O-ring
- Aspirator
- Heater pipe cover
- Heater core
- Upper case assembly
- Evaporator
- Air thermo sensor
- Wiring harness
- Blower case assembly
- Blower case, upper
- Blower case, lower
- A/C-ECU
- Air mixing damper control motor
- Mode selection damper control
motor
- Outside/inside air selection damper
control motor
- Mode selection damper lever
- Insulator
- Lower case
- Air mix damper
- Mode selection damper
- Upper case
INSPECTION
AIR THERMO SENSOR CHECK
Check that the resistance shown in the graph is almost satisfied
when measuring the resistance between the terminals
under two or more different temperature conditions.
NOTE: The temperature condition in checking should be within
the range shown.
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Motors and Transistor
REMOVAL AND INSTALLATION
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Power transistor removal steps
- Bottom cover assembly (front
passenger's seat)
- Power transistor
Blower motor removal steps
- Bottom cover assembly (front
passenger's seat)
- Hose
- Blower motor
Air mixing damper control motor,
mode selection damper control
motor and outside/inside air
selection damper control motor
removal steps
- Glove box assembly
- Rear heater duct A
- A/C-ECU
- Air mixing damper control motor
- Mode selection damper control
motor
- Clean air filter cover
- Clean air filter
- Outside/inside air selection damper
control motor
REMOVAL SERVICE POINT
AIR MIXING DAMPER CONTROL MOTOR,
OUTSIDE/INSIDE AIR SELECTION DAMPER
MOTOR, MODE SELECTION DAMPER CONTROL
MOTOR REMOVAL
NOTE: A normal plate-type ratchet driver is recommended.
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INSTALLATION SERVICE POINT
OUTSIDE/INSIDE AIR SELECTION
DAMPER MOTOR INSTALLATION
Adjust the position of the outside/inside air selection damper
while supporting it from the lower side through the hole which
the clean air filter and the blower motor were removed.
INSPECTION
BLOWER MOTOR CHECK
Check that the motor turns when applying battery power
between the connector terminals. Also check to see that there
is no abnormal sound emitted from the motor at this time.
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Ambient Air Temperature
Sensor
REMOVAL AND INSTALLATION
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Removal steps
- Ambient air temperature sensor
INSPECTION
AMBIENT AIR TEMPERATURE SENSOR CHECK
Measure the resistance between the sensor terminals under at
least two temperatures. The resistance values should meet the
values shown.
NOTE: The temperature should be within the shown range.
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A/C-ECU
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
- Glove Box and Bottom Cover Assembly (passenger's
side) Removal and Installation
- Foot duct Removal and Installation
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READ NEXT:
REMOVAL AND INSTALLATION
Pre-removal Operation
Refrigerant Discharging
Front bumper under cover
Front under cover RH
Drive belt removal <2.4L>
Drive belt removal <3.0L>
Post-instal
General Information
The blower, heater, and evaporator have been integrated
with the heater and A/C system to achieve
greater fan power and noise reduction.
SAFETY PRECAUTIONS
WARNING
Wear safety gog
SEE MORE:
DISASSEMBLY AND ASSEMBLY
CAUTION
Only use transmission fluid of the specified brand. Use of
transmission fluid other than specified
will impair driveability and CVT endurance, and may lead to breakage of CVT.
Only use the specified vaseline. Use of vaseline other than specified
will impair d
Inspection Procedure 1: TCM cannot communication with scan tool.
TCM POWER SUPPLY CIRCUIT
SYMPTOMS
TCM cannot be turned ON.
PROBABLE CAUSES
Damaged wiring harness and connectors
Malfunction of TCM
DIAGNOSTIC PROCEDURE
STEP 1. Check the following connector:
A-18X CVT control relay connector
C
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