Hyundai Elantra: Controller / Heater & A/C Control Unit (Manual)
Components and components location
[This illustration shows the LHD type. RHD type is symmetrical.] |

[Connector A]
Pin No
|
Function
|
Pin No
|
Function
|
1
| Low (Register specifications)
| 4
| Middle Low (Register specifications)
|
2
| Common (Register specifications)
| 5
| Middle High (Register specifications)
|
3
| Ground (Register specifications)
| 6
| High (Register specifications)
|
[Connector B]
Pin No
|
Function
|
Pin No
|
Function
|
1
| Battery (+)
| 21
| IGN2
|
2
| ISG B+
| 22
| IGN1
|
3
| ILL+ (TAIL)
| 23
| Blower IS (PWM specifications)
|
4
| Sensor REF (+5V)
| 24
| -
|
5
| Mode control actuator (Feedback)
| 25
| -
|
6
| Temperature control actuator (Feedback)
| 26
| -
|
7
| Intake actuator (Feedback)
| 27
| Blower Max. On signal (Register specifications)
|
8
| EVAP sensor (+)
| 28
| -
|
9
| AMB sensor (+)
| 29
| PTC relay
|
10
| Mode control actuator (Vent)
| 30
| -
|
11
| Mode control actuator (DEF)
| 31
| -
|
12
| Temperature control actuator (Cool)
| 32
| -
|
13
| Temperature control actuator (Warm)
| 33
| P_CAN High
|
14
| Intake actuator (FRE)
| 34
| P_CAN Low
|
15
| Intake actuator (REC)
| 35
| Blower INH (PWM specifications)
|
16
| HDT
| 36
| Blower PWM (In) (PWM specifications)
|
17
| -
| 37
| ECV (+)
|
18
| -
| 38
| ECV (-)
|
19
| Blower signal (On) (Register specifications)
| 39
| Sensor ground
|
20
| ILL- (RHEO)
| 40
| Ground
|
Repair procedures
1. | Disconnect the negative (-) battery terminal. |
2. | Remove the crash pad lower panel. (Refer to Body (Interior and Exterior) - "Crash Pad Lower Panel") |
3. | Remove the steering column shroud upper panel (A). 
|
4. | Remove the gear knob & boots (A) pull both of it up. 
|
5. | Using a screwdriver or remover, remove the floor console side garnish (A). 
|
6. | Remove the parking brake cover (A). 
|
7. | Using a screwdriver or remover, remove the console upper cover (A). 
|
8. | Using a screwdriver or remover, remove the crash pad garnish [CTR] (A). 
|
9. | After loosening the mounting screws, remove the A/C & heater controller unit (A). 
|
10. | Disconnect the A/C & heater controller connectors (A). 
|
11. | To install, reverse the removal procedure. •
| Make sure the connector are connected in properly. |
•
| Replace any damaged clips (or pin-type retainers). |
|
|
Components and components location
Components[This illustration shows the LHD type. RHD type is symmetrical.][Connector A]
Pin No
Function
Pin No
Function
1Battery9IGN22ILL+ (TAIL)10ISG Battery (+)3-11IGN14LIN BUS12HTD5-13-6-14-7-15-8RHEO (ILL-)16Ground
Repair procedures
Self Diag..
Other information:
Components and components location
Components1. BSD Indicator2. Side repeater lamp
Repair procedures
Inspection1.Disconnect the negative (-) battery terminal.2.Remove the front door trim.(Refer to Body - "Front door trim")3.Disconnect the power door mirror connector from the harness4.Check that the mirror operates properly as shown in the below table.Removal1.Disconnect (-) battery ter..
AdjustmentGlass Adjustment
•
Check the glass run channel for damage or deterioration, and replace it if necessary.1.Remove the front door trim.(Refer to Front Door - "Front Door Trim")2.Separate the mounting plug hole (A) from the front door module.3.After loosening the glass mounting bolts, adjust the spacing of the glass (A) by moving the glass from sid..