Hyundai Elantra Owners and Service Manuals

Hyundai Elantra: Controller / Heater Control Unit

Components and components location
Component Location

1. Heater control unit


Components

[Connector A]
Pin No
Function
Pin No
Function
1
Mode control actuator (Feedback)
21
Mode control actuator (Vent)
2
Intake actuator (Feedback)
22
Mode control actuator (DEF)
3
Passenger's temperature control actuator
23
Intake actuator (FRE)
4
Driver's temperature control actuator
24
Intake actuator (REC)
5
DEF actuator feedback
25
Passenger's temperature control actuator (Cool)
6
Ionizer diagnosis
26
Passenger's temperature control actuator (Warm)
7
-
27
Driver's temperature control actuator (Cool)
8
Photo sensor (-) [LH]
28
Driver's temperature control actuator (Warm)
9
Photo sensor (-) [RH]
29
DEF actuator (Open)
10
-
30
DEF Driver's temperature control actuator (Coles)
11
Auto defoging sensor (SDA)
31
-
12
Auto defoging sensor (SCL)
32
-
13
Auto defoging sensor glass temperature
33
-
14
AMB sensor (+)
34
P_CAN Low
15
EVAP sensor (+)
35
P_CAN High
16
-
36
Clean signal
17
-
37
-
18
-
38
-
19
-
39
-
20
-
40
Ground

[Connector B]
Pin No
Function
Pin No
Function
1
Ground
13
Ground
2
Sensor ground
14
ECV (-) Ground
3
FET (Gate) (Power mosfet specifications)
15
ECV (+)
4
FET (Drain feedback) (Power mosfet specifications)
16
-
5
Blower motor (+) (Power mosfet specifications)
17
-
6
Blower INH (PWM specifications)
18
-
7
Blower IS (PWM specifications)
19
PTC relay (Gasoline PTC specifications)
8
Blower PWM IN (PWM specifications)
20
-
9
Sensor REF (+5V)
21
-
10
-
22
LIN BUS (PM Sensor)
11
-
23
IGN1
12
Battery
24
IGN2

Repair procedures
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the glove box.
(Refer to Body (Interior and Exterior) - "Glove Box")
3.
Separate the heater control unit connector (A) and then loosen the mounitng screw, remove the heater control unit.

4.
To install, reverse the removal procedure.
   
Make sure the connector are connected in properly.

    Heater & A/C Control Unit (DATC)

    C..

    Advanced Driver Assistance System (ADAS)

    ..

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    Categories

    Tire Rotation

    To equalize tread wear, HYUNDAI recommends that the tires be rotated according to the maintenance schedule or sooner if irregular wear develops.

    During rotation, check the tires for correct balance.

    When rotating tires, check for uneven wear and damage. Abnormal wear is usually caused by incorrect tire pressure, improper wheel alignment, out-ofbalance wheels, severe braking or severe cornering. Look for bumps or bulges in the tread or side of the tire. Replace the tire if you find any of these conditions. Replace the tire if fabric or cord is visible. After rotation, be sure to bring the front and rear tire pressures to specification and check lug nut tightness (proper torque is 79~94 lbf·ft [11~13 kgf·m]).

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