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Components And Components Location: Components

WARNING: This page is about a different car, the 2018 Kia Forte5 and 2018 Kia Forte. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Heater & A/C Control Unit (Manual) With Connector End View
G12166777Courtesy of KIA MOTORS AMERICA, INC.

Connector Pin Function 

Connector No. Description
A 1 Ground
2 Middle - High
3 Middle - Low
4 High
5 Common
6 Low
B 1 Battery (+)
2 IGN 2
3 IGN 1
4 HTD
5 Rear defog switch
6 Mode actuator feedback
7 Temperature control actuator feedback
8 Intake actuator feedback
9 Mode control actuator (Vent)
10 Mode control actuator (Defrost)
11 Temperature control actuator (Cool)
12 Temperature control actuator (Warm)
13 Intake actuator (Fresh)
14 Intake actuator (Recirculation)
15 Sensor signal
16 Ground
17 Illumination (+) (Tail)
18 Sensor REF (+5V)
19 Detent OUT (+)
20 Max blower ON signal
21 Evaporator temperature sensor (+)
22 Ambient temperature sensor (+)
23 PTC relay (PTC only)
24 ECV (+) (ECV only)
25 ECV (-) - ground (ECV only)
26 -
27 C_CAN (High)
28 C_CAN (Low)
29 -
30 Blower ON signal to common
31 Ground
32 Illumination (-) (Rheostat)