Kia Rio: Heater & A/C Control Unit (MANUAL) Components
Connector pin function
| Connector |
Pin No |
Function |
Connector |
Pin No |
Function |
| A |
1 |
Ground |
B |
18 |
Intake Actuator Feedback |
| 2 |
Middle High |
19 |
Temperature Actuator Feedback |
||
| 3 |
Middle Low |
20 |
Vref (5V) |
||
| 4 |
High |
21 |
- |
||
| 5 |
Low |
22 |
- |
||
| 6 |
- |
23 |
Rear Defrost Switch (Low) |
||
| B |
1 |
Mode Actuator (Vent) |
24 |
HTD (Rear Defrost Indicator) |
|
| 2 |
Mode Actuator (Defog) |
25 |
Detent Out (+) |
||
| 3 |
Intake Actuator (Fresh) |
26 |
- |
||
| 4 |
Intake Actuator (Recirculation) |
27 |
Evaporator Temperature Sensor |
||
| 5 |
Temperature Actuator (Cool) |
28 |
Ambient Temperature Sensor |
||
| 6 |
Temperature Actuator (Warm) |
29 |
- |
||
| 7 |
PTC On Signal |
30 |
- |
||
| 8 |
PTC Relay #2 |
31 |
ECV IN |
||
| 9 |
PTC Relay #3 |
32 |
ECV OUT |
||
| 10 |
Seat Warmer Signal (Low) - Driver |
C |
1 |
IGN 2 |
|
| 11 |
Seat Warmer Signal (High) - Driver |
2 |
Rheostat (ILL-) |
||
| 12 |
- |
3 |
Sensor Ground |
||
| 13 |
CAN (Low) |
4 |
Battery (+) |
||
| 14 |
CAN (High) |
5 |
Tail Lamp (+) |
||
| 15 |
Blower Feedback |
6 |
Blower Common Signal (-) |
||
| 16 |
Ground |
7 |
IGN 1 |
||
| 17 |
Mode Actuator Feedback |
8 |
Ground |
Controller
...
See also:
Evaporator Temperature Sensor Description
The evaporator temperature sensor will detect the evaporator core temperature
and interrupt compressor relay power in order to prevent evaporator freezing
by excessive cooling.
...
Component Location
1. Instrument cluster assembly
2. Seat belt switch
3. Vehicle speed sensor
4. Engine coolant temperature sender
5. Oil pressure switch
6. Brake fluid level warning switch
...
In car sensor (FATC only) Description
The In-car air temperature sensor is built in the heater & A/C control
unit.
The sensor contains a thermistor which measures the temperature of the
inside. The signal decided by the r ...
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