The mode selection button controls the direction of the air flow through the ventilation system.
The air flow outlet port is converted as follows:
Refer to the illustration in the
Audio Remote Control Schematic Diagrams
Circuit Diagram
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Heater Unit Repair procedures
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Recover the refrigerant with a recovery/ recycling/ charging station.
3.
When the engine is cool, drain the engine coolant f ...