Hyundai Sonata: Controller / Heater & A/C Control Unit (Manual) Components and Components Location
| Components |
| Pin NO | Function | Pin NO | Function |
| 1 | ILL+ (TAIL) | 21 | Detent OUT (+) |
| 2 | Sensor REF (+5V) | 22 | HTD |
| 3 | Mode control actuator (Vent) | 23 | Rear defog switch |
| 4 | Mode control actuator (Defrost) | 24 | C_CAN High |
| 5 | Mode control actuator (Feedback) | 25 | C_CAN Low |
| 6 | Intake actuator (Fresh) | 26 | ECV+ |
| 7 | Intake actuator (Recirculation) | 27 | ECV- (Ground) |
| 8 | Intake actuator (Feedback) | 28 | AMB Sensor (+) |
| 9 | Driver's temperature control actuator (Cool) | 29 | EVAP Sensor (+) |
| 10 | Driver's temperature control actuator (Warm) | 30 | Blower MAX signal |
| 11 | Driver's temperature control actuator (Feedback) | 31 | Blower ON signal |
| 12 | Driver's seat heat indicator (Low) | 32 | - |
| 13 | Driver's seat heat indicator (Mid) | 33 | - |
| 14 | Driver's seat heat indicator (High) | 34 | - |
| 15 | Passenger's seat heat indicator (Low) | 35 | - |
| 16 | Driver's seat heat switch | 36 | - |
| 17 | Passenger's seat heat switch | 37 | - |
| 18 | Driver's cool switch | 38 | - |
| 19 | Passenger's cool switch | 39 | - |
| 20 | ILL- (RHEO) | 40 | Sensor ground |
| Pin NO | Function | Pin NO | Function |
| 1 | Ground | 9 | Ground |
| 2 | Driver's seat vent indicator (Low) | 10 | - |
| 3 | Driver's seat vent indicator (Mid) | 11 | - |
| 4 | Driver's seat vent indicator (High) | 12 | Passenger's seat heat indicator (Mid) |
| 5 | Passenger's seat vent indicator (Low) | 13 | Passenger's seat heat indicator (High) |
| 6 | Passenger's seat vent indicator (Mid) | 14 | - |
| 7 | Passenger's seat vent indicator (High) | 15 | IGN1 |
| 8 | IGN2 | 16 | Battery (+) |
| Pin NO | Function | Pin NO | Function |
| 1 | Low | 4 | Middle Low |
| 2 | Common | 5 | Middle High |
| 3 | Ground | 6 | High |
Controller
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Heater & A/C Control Unit (Manual) Repair procedures
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Using a screwdriver or remover, remove the center fascia panel (A).
3.
Disconnect the A/C & heater controller connectors ...
Other information:
Hyundai Sonata LF 2014-2019 Service Manual: Height Adjust Repair procedures
Replacement
1.
Remove the front seat belt upper anchor.
(Refer to Front Seat Belt - "Front Seat Belt Retractor")
2.
After loosening the mounting bolts, then remove the height adjust (A).
Tightening torque :
39.2 ~ 53.9 N.m (4.0 ~ 5.5kgf.m, 28.9 ~ 39.8 lb-ft)
3.
Install in the rev ...
Hyundai Sonata LF 2014-2019 Service Manual: Emergency Fastening Device (EFD) Repair procedures
Removal
1.
Disconnect the battery negative cable and wait for at least 3 minutes before beginning work.
2.
Remove the front seat.
(Refer to Body - "Front Seat Assembly")
3.
Remove the rear seat.
(Refer to Body - "Rear Seat Assembly")
4.
Remove the front anchor seat belt (A).
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