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Hyundai Equus: Heater & A/C Control Unit Components and Components Location
| Component |

| Connector Pin Function |
| Pin No. | Connector A Function |
| 1 | Ground |
| 2 | Rheostat (Illumination -) |
| 3 | Rear Defog Switch |
| 4 | - |
| 5 | Detent Out (+) |
| 6 | HTD |
| 7 | Illumination + (Tail) |
| 8 | - |
| 9 | Ground |
| 10 | - |
| 11 | Climate CAN High |
| 12 | Climate CAN Low |
| 13 | - |
| 14 | Ignition 1 |
| 15 | Battery |
| 16 | Ignition 2 |
Controller
Heater & A/C Control Unit Repair proceduresWarning Messages
Shift to "P" or "N" to start engine
This warning message illuminates if you try to start the engine with the
shift lever not in the P (Park) or N (Neutral) position.
...
Repair procedures
Removal
•
Put on gloves to protect your hands.
•
Use seat covers to avoid damaging any surfaces.
1.
Remove the roof side molding.
...
Refrigerant label
The refrigerant label is located on the underside of the hood.
The label contains the following information:
Type of refrigerant
Amount of refrigerant
...