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Removal And Installation





HEATER and COOLING UNIT ASSEMBLY


Removal and Installation


FRONT HEATER AND COOLING UNIT ASSEMBLY

Removal
1. Move the two front seats to the rear most position on the seat track.
2. Disconnect the battery negative terminal and battery positive terminal.
3. Discharge the refrigerant from the A/C system. Refer to Refrigeration System.
4. Drain the coolant from the engine cooling system. Refer to Changing Engine Coolant.
5. Disconnect the front heater hoses from the front heater core.
6. Disconnect the high/low pressure pipes from the front expansion valve.
7. Remove the instrument panel and console panel. Refer to Removal and Installation.
8. Remove the steering column. Refer to Removal and Installation.
9. Disconnect the instrument panel wire harness at the RH and LH in-line connector brackets, and the fuse block (J/B) electrical connectors.
10. Disconnect the steering member from each side of the vehicle body.
11. Remove the front heater and cooling unit assembly with it attached to the steering member, from the vehicle.

CAUTION:
Use care not to damage the seats and interior trim panels when removing the front heater and cooling unit assembly with it attached to the steering member.
12. Remove the front heater and cooling unit assembly from the steering member.

Installation
Installation is in the reverse order of removal.

CAUTION:
- Replace the O-ring of the low-pressure pipe and high-pressure pipe with a new one, and apply compressor oil to it when installing it.
- After charging the refrigerant, check for leaks.

NOTE:
- Fill the engine cooling system with the specified coolant mixture. Refer to Changing Engine Coolant.
- Recharge the A/C system. Refer to Refrigeration System.

REAR HEATER AND COOLING UNIT ASSEMBLY

Removal
1. Discharge the refrigerant from the A/C system. Refer to Refrigeration System.
2. Drain the coolant from the engine cooling system. Refer to Changing Engine Coolant.
3. Remove the luggage side finisher lower RH. Refer to Service and Repair
4. Disconnect the rear heater core hoses from the rear heater core.
5. Disconnect the rear A/C pipes from the rear expansion valve.
6. Disconnect the following electrical connectors:
- Rear blower motor
- Rear variable blower control
- Rear air mix door motor
7. Disconnect the ducts from the rear heater and cooling unit assembly.
8. Remove the rear heater and cooling unit assembly.

Installation
Installation is in the reverse order of removal.

CAUTION:
- Replace the O-ring of the low-pressure pipe and high-pressure pipe with a new one, and apply compressor oil to it when installing it.
- After charging the refrigerant, check for leaks.

NOTE:
- Fill the engine cooling system with the specified coolant mixture. Refer to Changing Engine Coolant.
- Recharge the A/C system. Refer to Refrigeration System.
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