Heating, Ventilation, and Air Conditioning

Heater & Air Conditioning Control Unit (DATC) Components and Component Locations

~3min read

Components

Gasoline Connector Pin Function
Connector Pin No. Function Connector Pin No. Function
A 1 Rear Light (+) A 29 Humidity (PWM)
2 REF Sensor (+5V) 30 Photo Sensor (-) - Left
3 C-CAN (High) 31 -
4 C-CAN (Low) 32 Photo Sensor (-) - Right
5 Mode Actuator (Vent) 33 ECV +
6 Mode Actuator (Defog Blow) 34 ECV - (Ground)
7 Mode Actuator Feedback 35 FET (Gate)
8 Intake Actuator (Fresh) 36 Duct Sensor (+) - Vent
9 Intake Actuator (Recirculation) 37 Duct Sensor (+) - Floor
10 Intake Actuator Feedback 38 -
11 K-Line 39 -
12 HTD (Rear Defrost Indicator) 40 -
13 Rear Defogger Switch B 1 Ground
14 Temperature Actuator (Cool) - Driver 2 Sensor Ground
15 Temperature Actuator (Warm) - Driver 3 FET (Drain Feedback)
16 Temperature Door Actuator Feedback - Driver 4 Ionizer Diagnosis
17 - 5 Clean Signal
18 - 6 ION SIGNAL
19 - 7 Ignition 1
20 Rheostat (ILL-) 8 Ignition 2
21 Lock Outside (+) 9 Ground
22 - 10 -
23 PTC Relay 11 Temperature Sensor Feedback - Passenger
24 - 12 Temperature Sensor (Cool) - Passenger
25 - 13 Temperature Sensor (Warm) - Passenger
26 - 14 Blower Motor (+)
27 Ambient Temperature Sensor (+) 15 -
28 Evaporator Temperature Sensor (+) 16 Battery

Diesel Connector Pin Function
Connector Pin No. Function Connector Pin No. Function
A 1 Rear Light (+) A 29 Humidity (PWM)
2 REF Sensor (+5V) 30 Photo Sensor (-) - Left
3 C-CAN (High) 31 -
4 C-CAN (Low) 32 Photo Sensor (-) - Right
5 Mode Actuator (Vent) 33 ECV +
6 Mode Actuator (Defog Blow) 34 ECV - (Ground)
7 Mode Actuator Feedback 35 FET (Gate)
8 Intake Actuator (Fresh) 36 Duct Sensor (+) - Vent
9 Intake Actuator (Recirculation) 37 Duct Sensor (+) - Floor
10 Intake Actuator Feedback 38 -
11 K-Line 39 -
12 HTD (Rear Defrost Indicator) 40 -
13 Rear Defogger Switch B 1 Ground
14 Temperature Actuator (Cool) - Driver 2 Sensor Ground
15 Temperature Actuator (Warm) - Driver 3 FET (Drain Feedback)
16 Temperature Door Actuator Feedback - Driver 4 Ionizer Diagnosis
17 - 5 Clean Signal
18 - 6 ION SIGNAL
19 - 7 Ignition 1
20 Rheostat (ILL-) 8 Ignition 2
21 Lock Outside (+) 9 Ground
22 - 10 -
23 PTC Relay 2 11 Temperature Sensor Feedback - Passenger
24 PTC Relay 3 12 Temperature Sensor (Cool) - Passenger
25 PTC ON Signal 13 Temperature Sensor (Warm) - Passenger
26 - 14 Blower Motor (+)
27 Ambient Temperature Sensor (+) 15 -
28 Evaporator Temperature Sensor (+) 16 Battery

Test yourself

A quick Kia Cee'd quiz: every answer comes with an explanation and a link to the manual page.