Kia Optima Hybrid: Cruise Control System / Schematic Diagrams
| System Block Diagram |
| Component part | Function | |
| ECU | Controls engine. | |
| MCU | Controls drive motor. | |
| ABS | Sends vehicle speed to HCU. | |
| HCU | Receives signals from sensor and control switches. | |
| Cluster (Cruise control indicator) | Illuminate when CRUISE main switch is ON (Built into cluster) | |
| Cruise Control switches | ON/OFF switch | Switch for automatic speed control power supply. |
| Resume/Accel switch | Controls automatic speed control functions by Resume/Accel switch (Set/Coast switch) | |
| Set/Coast switch | ||
| Cancel switches | Cancel switch | Sends cancel signals to HCU. |
| Brake-pedal switch | ||
| Transaxle range switch (TCU) | ||
Description and Operation
Cruise Control The cruise control system is engaged by the cruise "ON/OFF" main switch located on right of steering wheel column. The system has the capability to cruise, coast, accelerate and resume speed. ...
Troubleshooting
Trouble Symptom Charts Trouble Symptom 1 Trouble Symptom 2 Trouble symptomProbable causeRemedyThe set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) ...
Other information:
Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Intake Air Temperature Sensor (IATS) Description and Operation
Description Intake Air Temperature Sensor (IATS) is included inside Manifold Absolute Pressure Sensor and detects the intake air temperature. To calculate precise air quantity, correction of the air temperature is needed because air density varies according to the temperature. So the ECM uses not only ...
Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: High Mounted stop lamp Repair procedures
Removal 1. Disconnect the negative(-) battery terminal. 2. Remove the rear seat. (Refer to the BD group - "Rear seat") 3. Remove the package tray trim (A). (Refer to the BD group -"Interior trim") 4. Remove the soundproofing felt (A) to remove the wiring. 5. Remove the high mounted stop lamp after removing ...