Body Electrical System
Description and Operation
In this manual: Body Electrical System
2steps
~12min
1/5difficulty
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Description
eCall: When a collision occurs or a user request is detected, the vehicle status center is notified of the call via the wireless network so that the center can provide the necessary emergency assistance.
| 1. Emergency Call 2. Wireless Communication Network |
3. Public Safety Answering Point (PSAP) 4. Emergency Rescue Service |
eCall Function
- Automatic Notification Function: Detects airbag deployment signal and automatically notifies the call center of the accident.
- Accident occurred (condition: ignition "ON")
- Collision Signal: Sent from the Airbag Control Unit (ACU) to the eCall module.
- Call: The emergency call is made to the most appropriate Public Safety Answering Point (PSAP).
- Transmit MSD: After the call is connected, the Minimum Set of Data (MSD) is transmitted using in-band modem communication (technology that transmits data over the voice channel of a telephone line).
- Connect to a call center operator, who will then provide emergency assistance service.
- Manual Notification Function: The driver can manually notify the call center of the accident by pressing the SOS button.
- The driver decides to press the SOS button.
- Call: The emergency call is placed to the most appropriate PSAP.
- Transmit MSD: After the call is connected, the MSD is transmitted using in-band modem communication (technology that transmits data over the voice channel of a telephone line).
- Connect to a call center operator, who will then provide emergency assistance service.

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