Automatic Climate Control

CAUTION:
- All SRS wiring harnesses are covered with yellow outer insulation.
- Before disconnecting any part of the SRS wire harness, install the short connectors.
- Replace the entire affected SRS harness assembly if it has an open circuit or damaged wiring.

HEATER-EVAPORATOR UNIT REMOVAL
1. Remove the dashboard. Service and Repair

NOTE: The original equipment radio has a coded theft protection circuit. If service to the car requires any of the following, be sure you get the customer's code number before you begin work:
- disconnecting the battery.
- removal of fuse No. 56 (7.5A).
- removal of the radio.
After service, reconnect power to the radio an turn it on. The word "CODE" will be displayed. Enter the customer's 5-digit code to restore radio operation.

2. Remove the blower. Service and Repair
3. When the engine is cool, drain the coolant from the radiator.

WARNING:
- Do not remove the radiator cap when the engine is hot; the coolant is under pressure and could severely scald you.
- Keep hands away from the radiator fan. The fan may start automatically without warning and run for up to 30 minutes, even after the engine is turned off.

CAUTION: Radiator coolant will damage paint. Quickly rinse any spilled coolant off pained surfaces.

4. Disconnect the heater hoses at the heater. Coolant will run out when the hoses are disconnected, drain it into a clean drip pan.





5. Disconnect the heater valve cable from the heater valve.





6. Release the clamps, then disconnect the heater hoses.





7a. Remove all refrigerant from the A/C system with a refrigerant recovery system.
7b. Remove the A/C suction line bolt and the receiver line bolt, then remove the suction line and receiver line.





8. Remove the nuts and evaporator seal plate.





9. Remove the ducts and disconnect the connectors, then remove the heater-evaporator mounting nuts and bolts.
10. Disconnect the air-mix control motor connector and max cool motor connector. Then remove the heater-evaporator assembly.

HEATER-EVAPORATOR UNIT OVERHAUL





1. Remove the heater core cover, remove the clamps from the inlet and outlet lines, then lift out the heater core.

2. Remove the upper half of the housing, then remove the evaporator.

3. Remove the expansion valve.

4. Assemble the heater-evaporator unit in the reverse order of disassembly. Hold the expansion valve capillary tube down against the suction line, and wrap it with tape to hold it there.

CAUTION: After reinstalling the heater-evaporator follow the sequence described in the cooling system air bleed procedure. If you don't, you may leave air in the system which could damage the engine.