| Components |

| 1. HECU module 2. Front wheel speed sensor 3. Rear wheel speed sensor 4. Yaw rate & Lateral G sensor 5. Steering angle sensor | 6. ABS Warning lamp 7. Parking brake/EBD warning lamp 8. ESC OFF lamp 9. ESC Function/Warning lamp |
Description of ESC Electronic Stability Control (ESC) recognizes critical driving conditions, such as panic reactions in dangerous situations, and stabilizes the vehicle by wheel-individual braking and engine control intervention.
Inspection 1. Ignition "ON" 2. Using the scan tool. 3. Emit intensive light toward photo sensor using a lamp, and check the output voltage change. 4. The voltage will rise with higher intensive light and reduce with lower intensive light.
Inspection 1. Ignition "OFF”. 2. Disconnect the connector of auto defog control actuator. 3. Verify that the auto defog control actuator operates to the defrost ON mode when connecting 12V to the terminal 3 and grounding terminal 7. 4.