B1209 INFINITI – Frontal Collision Detection

B1209 INFINITI Possible Symptoms

Air Bag Warning Light ON

B1209 INFINITI Possible Causes

Faulty Air Bag Diagnosis Sensor Unit (ACU),Air Bag Diagnosis Sensor Unit (ACU) harness is open or shorted,Air Bag Diagnosis Sensor Unit (ACU) circuit poor electrical connection

B1209 INFINITI Description

Detects component damage resulting from a front collision, blinks or illuminates the air bag warning lamp to inform the driver. The air bag and seat belt pre-tensioners for driver and front seat passenger are operated by the decision of the Air Bag Diagnosis Sensor Unit (ACU) out signal transmitted because of the frontal collision. The Frontal Collision Detection consists of crash zone sensor, Air Bag Diagnosis Sensor Unit (ACU), air bags and seat belt pre-tensioners for driver and front passenger.