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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 proceduresInput Speed Sensor Schematic Diagrams
Circuit Diagram
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Brake Switch Repair procedures
Removal
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the lower crash pad.
(Refer to the Body - "Crash Pad")
3.
Disconnect the stop lamp switch con ...
Description and Operation
Description
In the state of IGN1 ON, when the multi function switch
module detects auto light switch on, tail lamp relay output and head
lamp low relay output are controlled according to the ve ...