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

Removal steps

• Wiring harness and clamps

1. Heater hose

• Heat protector

2. Suction pipe
3. Liquid pipe B
4. O-ring
5. Drain hose
6. Front deck crossmember
7. Heater unit assembly

REMOVAL SERVICE POINTS

CONNECTOR DISCONNECTION

Disconnect the following connectors to remove the front deck crossmember.

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

Disassembly steps

1. Air intake duct
2. Clean air filter cover
3. Clean air filter
4. Blower motor
5. Power transistor
6. Expansion valve cover
7. Expansion valve
8. O-ring
9. Aspirator
10. Heater pipe cover
11. Heater core
12. Upper case assembly
13. Evaporator
14. Air thermo sensor
15. Wiring harness
16. Blower case assembly
17. Blower case, upper
18. Blower case, lower
19. A/C-ECU
20. Air mixing damper control motor
21. Mode selection damper control motor
22. Outside/inside air selection damper control motor
23. Mode selection damper lever
24. Insulator
25. Lower case
26. Air mix damper
27. Mode selection damper
28. 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.

Motors and Transistor

REMOVAL AND INSTALLATION

Power transistor removal steps

• Bottom cover assembly (front passenger's seat)

1. Power transistor

Blower motor removal steps

• Bottom cover assembly (front passenger's seat)

2. Hose
3. 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

4. Air mixing damper control motor
5. Mode selection damper control motor
6. Clean air filter cover
7. Clean air filter
8. 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.

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.

Ambient Air Temperature Sensor

REMOVAL AND INSTALLATION

Removal steps

• Front bumper

1. 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.

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

READ NEXT: