Hyundai Sonata: Heater & A/C Control Unit (DATC) Components and Components Location - Controller - Heating, Ventilation and Air ConditioningHyundai Sonata: Heater & A/C Control Unit (DATC) Components and Components Location

Components

Connector [A]
Pin NO
Function
Pin NO
Function
1
ILL+ (TAIL)
21
Detent OUT (+)
2
Sensor REF (+5V)
22
HTD (Rear defog indicator)
3
Mode control actuator (Vent)
23
Rear defog switch
4
Mode control actuator (Defrost)
24
C_CAN High
5
Mode control actuator (Feedback)
25
C_CAN Low
6
Intake actuator (Fresh)
26
ECV+
7
Intake actuator (Recirculation)
27
ECV- (Ground)
8
Intake actuator (Feedback)
28
AMB Sensor (+)
9
Driver's temperature control actuator (Cool)
29
EVAP Sensor (+)
10
Driver's temperature control actuator (Warm)
30
Photo sensor (-)_LH
11
Driver's temperature control actuator (Feedback)
31
Photo sensor (-)_RH
12
Passenger's temperature control actuator (Cool)
32
-
13
Passenger's temperature control actuator (Warm)
33
-
14
Passenger's temperature control actuator (Feedback)
34
-
15
No K-line
35
-
16
Driver's seat heat switch
36
-
17
Passenger's seat heat switch
37
-
18
Driver's cool switch
38
-
19
Passenger's cool switch
39
-
20
ILL- (RHEO)
40
Sensor ground

Connector [B]
Pin NO
Function
Pin NO
Function
1
Ground
17
Ground
2
-
18
-
3
-
19
Driver's seat heat indicator (Low)
4
-
20
Driver's seat heat indicator (Mid)
5
-
21
Driver's seat heat indicator (High)
6
FET (Gate)
22
Passenger's seat heat indicator (Low)
7
FET Drain (Feedback)
23
Passenger's seat heat indicator (Mid)
8
-
24
Passenger's seat heat indicator (High)
9
-
25
Driver's seat cool indicator (Low)
10
Steering wheel heat switch
26
Driver's seat cool indicator (Mid)
11
Steering wheel heat indicator
27
Driver's seat cool indicator (High)
12
Blower motor (+)
28
Passenger's seat cool indicator (Low)
13
-
29
Passenger's seat cool indicator (Mid)
14
-
30
Passenger's seat cool indicator (High)
15
IGN1
31
-
16
IGN2
32
Battery (+)

    Heater & A/C Control Unit (Manual) Repair procedures
    Replacement 1. Disconnect the negative (-) battery terminal. 2. Using a screwdriver or remover, remove the center fascia panel (A). 3. Disconnect the A/C & heater controller connectors ...

    Heater & A/C Control Unit (DATC) Repair procedures
    Self Diagnosis 1. Self-diagnosis process.     • When operating the self-diagnostics, the below fault (self-diagnostics code) will blink at 0.5 seconds interval on the t ...

    See also:

    Description and Operation
    Warning Lamp Activation Warning Lamp Behavior after Ignition On As soon as the operating voltage is applied to the SRSCM ignition input, the SRSCM activates the warning lamp for a LED lamp c ...

    Specifications
    Specification Ignition System Ignition Coil ItemSpecification Primary Coil Resistance (?)0.56 ± 10% [20°C (68°F)]Secondary Coil Resistance (k?)2.0 ± 15% [20°C (68°F)] Spark Plug ...

    Seat Belt Buckle Switch (BS). Description and Operation
    Description The SRSCM shall monitor the status of the driver and front passenger seat belt buckle. The SRSCM provides one pin each for the driver and front passenger seat belt buckle status ...