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: Rear Glass Defogger Switch Repair procedures
Inspection
1.
The body electrocal system can be quickly diagnosed failed parts with vehicle diagnostic system(GDS).
The diagnostic system(GDS) provides the following information.
(1)
Self diagnosis : Checking the failure code (DTC) and display
(2)
Current data : Checking the system input/ ...
Hyundai Sonata LF 2014-2019 Service Manual: Occupant Classification Sensor (OCS) Description and Operation
Description
In order to make normal activation of airbag system, SRSCM
detects DTC(s) for the Occupant Classification System (OCS). If the seat
is occupied, OCS detects passenger presences status and send signal to
SRSCM via CAN.
SRSCM recognizes the signal as 2(two) different
classifica ...