Kia Niro: Heater & A/C Control Unit / Components and components location

Components
[AUDIO Type]

Connector Pin Function
No.
Connector A
Connector B
1
Battery
Passenger side mode control actuator Feedback
2
-
Passenger side temperature control actuator (Cool)
3
Illumination (+) (Tail)
Passenger side temperature control actuator (Warm)
4
Sensor REF (5V)
Auto defogging actuator Feedback
5
Driver side mode control actuator Feedback
Auto defogging actuator (Open)
6
Driver side temperature control actuator Feedback
Auto defogging actuator (Close)
7
Intake actuator Feedback
SBR
8
Evaporator sensor (+)
Rear Left SBR
9
Ambient sensor (-)
Rear Center SBR
10
Driver side mode control actuator (Vent)
Rear Right SBR
11
Driver side mode control actuator (DEF)
PAB IGN1
12
Driver side control actuator (Cool)
-
13
Driver side control actuator (Warm)
PAB Signal (On)
14
Intake actuator (FRE)
ADS signal
15
Intake actuator (REC)
PAB SIGNAL (Off)
16
HTD
Passenger Side Mode Control Actuator (Vent)
17
Rear Defogging Switch
Passenger Side Mode Control Actuator (DEF)
18
Clean signal
Passenger Side Mode Control Actuator Feedback
19
Cluster Ionizer Diagnosis
Duct Sensor (+) - Vent
20
Illumination (-) (Rheo)
Duct Sensor (+) - Floor
21
IGN2
Hazard indicator blink
22
IGN1
-
23
Blower PWM
-
24
Left photo sensor (-)
Ground
25
Right photo sensor (-)

26
Blower Relay
27
-
28
PTC Relay 2 (PTC only)
29
PTC Relay 1 (PTC only)
30
-
31
DETENT Output (-)
32
Hazard signal (Audio only)
33
P_CAN (+)
34
P_CAN (-)
35
Climate CAN (+)
36
Climate CAN (-)
37
Interlock (+) (ECOMP)
38
Interlock (-) (ECOMP)
39
Sensor ground
40
Ground

[AVN Type]

Connector Pin Function
No.
Connector A
Connector B
1
Battery
Passenger side mode control actuator Feedback
2
-
Passenger side temperature control actuator (Cool)
3
Illumination (+) (Tail)
Passenger side temperature control actuator (Warm)
4
Sensor REF (5V)
Auto defogging actuator Feedback
5
Driver side mode control actuator Feedback
Auto defogging actuator (Open)
6
Driver side temperature control actuator Feedback
Auto defogging actuator (Close)
7
Intake actuator Feedback
SBR
8
Evaporator sensor (+)
Rear Left SBR
9
Ambient sensor (-)
Rear Center SBR
10
Driver side mode control actuator (Vent)
Rear Right SBR
11
Driver side mode control actuator (DEF)
PAB IGN1
12
Driver side control actuator (Cool)
-
13
Driver side control actuator (Warm)
PAB Signal (On)
14
Intake actuator (FRE)
ADS signal
15
Intake actuator (REC)
PAB SIGNAL (Off)
16
HTD
Passenger Side Mode Control Actuator (Vent)
17
Rear Defogging Switch
Passenger Side Mode Control Actuator (DEF)
18
Clean signal
Passenger Side Mode Control Actuator Feedback
19
Cluster Ionizer Diagnosis
Duct Sensor (+) - Vent
20
Illumination (-) (Rheo)
Duct Sensor (+) - Floor
21
IGN2
Hazard indicator blink
22
IGN1
-
23
Blower PWM
-
24
Left photo sensor (-)
Ground
25
Right photo sensor (-)

26
Blower Relay
27
-
28
PTC Relay 2 (PTC only)
29
PTC Relay 1 (PTC only)
30
-
31
DETENT Output (-)
32
Hazard signal (Audio only)
33
P_CAN (+)
34
P_CAN (-)
35
Climate CAN (+)
36
Climate CAN (-)
37
Interlock (+) (ECOMP)
38
Interlock (-) (ECOMP)
39
Sensor ground
40
Ground

Heater & A/C Control Unit
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Repair procedures
Self Diagnosis 1. Self-diagnosis process.    • ...

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