Hyundai Elantra: Controller / Heater & A/C Control Unit (DATC) Components and Components Location
| Components |
| Connector | Pin NO | Function | Connector | Pin NO | Function |
| A | 1 | Battery (+) | A | 21 | IGN1 |
| 2 | IGN2 | 22 | ILL+ (TAIL) | ||
| 3 | ISG B+ | 23 | Sensor ground REF (+5V) | ||
| 4 | Mode control actuator (Vent) | 24 | C_CAN High | ||
| 5 | Mode control actuator (Def) | 25 | C_CAN Low | ||
| 6 | Mode control actuator (Feedback) | 26 | HTD (Rear defog indicator) | ||
| 7 | Intake actuator (Fresh) | 27 | - | ||
| 8 | Intake actuator (Recirculation) | 28 | - | ||
| 9 | Intake actuator (Feedback) | 29 | Passenger's temperature control actuator (Cool) | ||
| 10 | Defogging actuator (On) | 30 | Passenger's temperature control actuator (Warm) | ||
| 11 | Defogging actuator (Off) | 31 | Passenger's temperature control actuator (Feedback) | ||
| 12 | Defogging actuator (Feedback) | 32 | PTC Relay 2 | ||
| 13 | Rear defog switch | 33 | PTC Relay 3 | ||
| 14 | Hazard switch | 34 | PTC on signal | ||
| 15 | Driver's temperature control actuator (Cool) | 35 | Detent out (-) | ||
| 16 | Driver'st emperature control actuator (Warm) | 36 | - | ||
| 17 | Driver's temperature control actuator (Feedback) | 37 | ECV + | ||
| 18 | - | 38 | ECV - (Ground) | ||
| 19 | Sensor ground | 39 | ILL- (RHEO) | ||
| 20 | Ground | 40 | Ground |
| Connector | Pin NO | Function | Connector | Pin NO | Function |
| B | 1 | Blower motor (+) | B | 9 | PAB IGN1 |
| 2 | FET Drain (Feedback) | 10 | Clean signal | ||
| 3 | FET (Gate) | 11 | Ionizer diagnosis | ||
| 4 | SBR | 12 | AMB sensor (+) | ||
| 5 | Rear SBR (LH) | 13 | EVAP sensor (+) | ||
| 6 | Rear SBR (Center) | 14 | Auto defogging sensor signal | ||
| 7 | Rear SBR (RH) | 15 | Photo sensor (-)_LH | ||
| 8 | PAB Off signal | 16 | Photo sensor (-)_RH |
Heater & A/C Control Unit (Manual) Repair procedures
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the glove box upper cover assembly.
(Refer to Body - "Glove Box Upper Cover Assembly")
3.
Loosen the mounting screw ...
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 Elantra AD (2016-2020) Service Manual: General Safety Information and Caution
Instructions
When Handling Refrigerant
1.
R-134a liquid refrigerant is highly volatile. A drop on the
skin of your hand could result in localized frostbite. When handling the
refrigerant, be sure to wear gloves.
2.
It is standard practice to wear goggles or glasses to protect
your ey ...
Hyundai Elantra AD (2016-2020) Service Manual: Components and Components Location
Components Location
1. Engine Control Module (ECM)2. Manifold Absolute Pressure Sensor (MAPS)3. Intake Air Temperature Sensor (IATS)4. Engine Coolant Temperature Sensor (ECTS)5. Throttle Position Sensor (TPS) [integrated into ETC Module]6. Crankshaft Position Sensor (CKPS)7. Camshaft Position S ...
