Hyundai Elantra (CN7): Cylinder Head Assembly / Vacuum Pump
Repair procedures
| Removal |
| 1. | Disconnect the battery negative terminal. |
| 2. | Remove the air duct and air cleaner assembly. (Refer to Intake and Exhaust System - "Air Cleaner") |
| 3. | Remove the battery and battery tray. (Refer to Engine Electrical System - "Battery") |
| 4. | Disconnect the brake vacuum hose (A).
|
| 5. | Disconnect the fuel hose (A) and PCSV hose (B).
|
| 6. | Remove the main wiring protector (A) after disconnecting the connector (B).
|
| 7. | Disconnect the intercooler inlet hose (A).
|
| 8. | Remove the intercooler pipe (A).
|
| 9. | Remove the vaccum pump (A).
|
| 10. | Install in the reverse order of removal. |
Repair procedures Removal • Use Fender cover to avoid damaging painted surfaces.• To avoid damaging the cylinder head, wait until the engine coolant temperature drops below normal temperature before removing it.
Other information:
Hyundai Elantra (CN7) 2021-2026 Service Manual: Ambient Temperature Sensor
Description and operation DescriptionThe ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperature.
Hyundai Elantra (CN7) 2021-2026 Service Manual: Heater Control Unit
Components and components location Component Location1. Heater control unitComponents[Connector A] Pin No Function Pin No Function 1Mode control actuator (Feedback)21Mode control actuator (Vent)2Intake actuator (Feedback)22Mode control actu
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