Air Bag Diagnosis Sensor Unit Functions

Air bag diagnosis sensor unit has the following functions.

• Detects a collision and supplies the energy for deploying air bag and seat belt pre-tensioner.
• Detects and records electrical malfunction in air bag system and seat belt pre-tensioner system, and turns air bag warning lamp ON.
• Detects and records the deployment of air bag and seat belt pre-tensioner, and turns ON air bag warning lamp.
• Indicates malfunctioning portion via the number of blinks from the air bag warning lamp in the diagnosis mode.
• Indicates the malfunction record via CONSULT.
• Transmits collision detection signal to BCM and other ECU when a collision is detected (collision detection output function).