Hyundai Sonata: Controller / Heater & A/C Control Unit (DATC) Components and Components Location
| Components |
| Pin NO | Function | Pin NO | Function |
| 1 | ILL+ (TAIL) | 21 | Detent OUT (+) |
| 2 | Sensor REF (+5V) | 22 | HTD (Rear defog indicator) |
| 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 | Photo sensor (-)_LH |
| 11 | Driver's temperature control actuator (Feedback) | 31 | Photo sensor (-)_RH |
| 12 | Passenger's temperature control actuator (Cool) | 32 | - |
| 13 | Passenger's temperature control actuator (Warm) | 33 | - |
| 14 | Passenger's temperature control actuator (Feedback) | 34 | - |
| 15 | No K-line | 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 | 17 | Ground |
| 2 | - | 18 | - |
| 3 | - | 19 | Driver's seat heat indicator (Low) |
| 4 | - | 20 | Driver's seat heat indicator (Mid) |
| 5 | - | 21 | Driver's seat heat indicator (High) |
| 6 | FET (Gate) | 22 | Passenger's seat heat indicator (Low) |
| 7 | FET Drain (Feedback) | 23 | Passenger's seat heat indicator (Mid) |
| 8 | - | 24 | Passenger's seat heat indicator (High) |
| 9 | - | 25 | Driver's seat cool indicator (Low) |
| 10 | Steering wheel heat switch | 26 | Driver's seat cool indicator (Mid) |
| 11 | Steering wheel heat indicator | 27 | Driver's seat cool indicator (High) |
| 12 | Blower motor (+) | 28 | Passenger's seat cool indicator (Low) |
| 13 | - | 29 | Passenger's seat cool indicator (Mid) |
| 14 | - | 30 | Passenger's seat cool indicator (High) |
| 15 | IGN1 | 31 | - |
| 16 | IGN2 | 32 | Battery (+) |
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 ...
Heater & A/C Control Unit (DATC) Repair procedures
Self Diagnosis
1.
Self-diagnosis process.
•
When operating the self-diagnostics, the below fault
(self-diagnostics code) will blink at 0.5 seconds interval on the
t ...
Other information:
Hyundai Sonata LF 2014-2019 Service Manual: Blower Motor Repair procedures
Inspection
1.
Connect the battery voltage and check the blower motor rotation.
2.
If the blower motor does not operate well, substitute with a known-good blower motor and check for proper operation.
3.
Replace the blower motor if it is proved that there is a problem with it.
Replacem ...
Hyundai Sonata LF 2014-2019 Service Manual: Crankshaft Damper Pulley Repair procedures
Removal and Installation
1.
Remove the drive belt.
(Refer to Timing System - "Dreve Belt")
2.
Remove the engineroom under cover.
3.
Remove the passenger side front tire.
4.
Remove the crankshaft damper pulley (A).
Tightening torque :
(47.0 ~ 50.9 N.m) + (38°~ 42°) [(4.8 ~ 5.2 ...