Kia Picanto: Controller / Heater & A/C Control Unit(Full Automatic)

Kia Picanto JA 2017-2024 Service & Repair Manual / Heating,Ventilation, Air Conditioning / Controller / Heater & A/C Control Unit(Full Automatic)

Components and components location

Components

Control Panel

Connector pin function

No.	Connector A	Connector B
1	Battery	PAB IGN1
2	ISG Battery (+)	PAB On signal
3	Illumination (+)	PAB Off signal
4	Sensor REF (+5V)	-
5	Mode control actuator Feedback	-
6	Temperature control actuator Feedback	-
7	Intake actuator Feedback	-
8	Evaporator sensor (+)	-
9	Ambient sensor (+)	-
10	Driver mode control actuator (Vent)	-
11	Driver mode control actuator (DEF)	Seat belt reminder
12	Temperature control actuator (Cool)	Rear left seat belt reminder
13	Temperature control actuator (Warm)	Rear center seat belt reminder
14	Intake actuator (FRE)	Rear right seat belt reminder
15	Intake actuator (REC)	-
16	HTD	Ground
17	Rear defog switch
18	-
19	-
20	Illumination (-)
21	IGN2
22	IGN1
23	Blower motor (+)
24	Photo sensor (-)
25	-
26	-
27	-
28	-
29	-
30	-
31	Detent out (-)
32	-
33	C_CAN (High)
34	C_CAN (Low)
35	FET (Drain Feedback)
36	FET (Gate)
37	ECV (+)
38	ECV (-)

Repair procedures

Self Diagnosis

1.	Self-diagnosis process

2.	How to read self-diagnostic code After the display panel flickers three times every 0.5 second, the corresponding fault code flickers on the setup temperature display panel every 0.5 second and will show two figures. Codes are displayed in numerical format

Fault code display

(1)	Continuance operation : DTC code is one.

(2)	Continuance operation : DTC code is more two.

(3)

STEP operation

A.	Nomal or one fault code is same as a continuance operation.

B.	DTC code os more two.

If fault codes are displayed during the check, Inspect malfunction causes by referring to fault codes.

Display	Fail description
00	Normal
11	In-car sensor open
12	In-car sensor short
13	Ambient sensor open
14	Ambient sensor short
17	Evaporator sensor open
18	Evaporator sensor short
19	Temp door potentiometer open/short- Drive
20	Temp door potentiometer fault- Drive
21	Mode door potentiometer open/short
22	Mode door potentiometer fault
25	Intake door potentiometer open
26	Intake door potentiometer short
45	APT CAN Signal Fault
47	RPM CAN Signal Fault
48	Vehicle speed Signal Fault
49	Engine coolant temperature CAN Signal Fault

Fail safe

NO.	Item	Fault	Fail Safe
1	In-car Sensor	Open or Short	Control with the value of 25°C(77.0°F)
2	Ambient temperature sensor	Open or Short	Control with the value of 20°C(67°F)
3	Evaporator temperature sensor	Open or Short	Control with the value of -2°C(28.4°F)
4	Water temperature sensor	Open or Short	Control with the value of -2°C(28.4°F)
5	Temperature control actuator	Open or Short	If temperature setting 17°C-24.5°C, fix at maximum cooling position. If temperature setting 25°C-32°C, fix at maximum heating position.
6	Mode control actuator	Open or Short	Fix vent position, while selecting vent mode. Fix defrost position, while selecting all except vent mode.
7	Intake control actuator	Open or Short	Fix fresh position, while selecting fresh mode.
7	Intake control actuator	Open or Short	Fix recirculation position, while selecting recirculation mode.
9	ECV	Open	CF_Fatc_EcvFlt = 01H (fault) ECV OFF, A/C Output OFF, Torque 0Nm
10	VS (Vehicle Speed)	FFh or NO reception	VS-TCU (From TCU2)
11	VS TCU (Vehicle Speed Calculated by TCU)	FFh or NO reception	Control with the value of 0 Kph
12	N (Engine Speed)	NO reception	Control with the value of 650 RPM
13	F_N_ENG	FFh or NO reception	Control with the value of 650 RPM
14	TPS (Throttle Position Signal)	FFh or NO reception	0%
15	Temp _ ENG	FFh or NO reception	Control with the value of - 2 °C(28.4°F)
16	R _ TqAcnApvC (Max Torque Limitation of A/C Compressor)	FFh or NO reception	0 Nm (ECV OFF)
17	R _ PAcnC (APT Sensor Output Value)	FFh or NO reception	0 hPa (ECV OFF)
18	RLY _ AC	NO reception	Comp OFF (ECV OFF)

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the floor console assembly. (Refer to Body - "Floor Console Assembly")

3.	Remove the heater & A/C control unit (A)

4.	Disconnect the heater & A/C control unit connectors (A).

5.	Install in the reverse order of removal.

Heater & A/C Control Unit(Manual)

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