Purpose
The air bag system warning light notifies the driver of a malfunction in the SRS air bag system.
Function
If a malfunction occurs in the SRS air bag system, the air bag system warning light illuminates or flashes.

Construction
LEDs (light-emitting diode) have been adopted for the air bag system warning light.
The air bag system warning light is built into the instrument cluster.
Operation
When the ignition is switched ON, the instrument cluster illuminates the air bag system warning light for a specified period to indicate that the SRS air bag system is performing initialization diagnostics. If there is no malfunction in the SRS air bag system, the indicator light turns off.
If the SAS control module detects a malfunction in the SRS air bag system, it sends a warning signal to the instrument cluster via CAN communication. The instrument cluster illuminates or flashes the air bag system warning light based on the warning signal it receives to display the DTC.
If there is a malfunction in the SRS air bag system, the air bag system warning light displays DTCs according to the following patterns:

If there are several malfunctions in the SRS air bag system, the DTC of the highest priority ranking is displayed first.
Fail-safe
Function not equipped.
Air Bag System Warning Alarm [Two Step Deployment Control System]
Air Bag System Warning Light [Two Step Deployment Control System]Brakes
Abbreviations
AAS
Active Adaptive Shift
ABS
Antilock Brake System
ABDC
After Bottom Dead Center
ACC
Accessories
AFS
Adaptive Front Lighting System
...
Ion Sensor
Purpose/Function
Detects ion generation in the combustion chamber for detecting pre-ignition.
Detects ions which occur due to fuel combustion as current by applying bias
voltage to the spark plug, which is amplified in the ignition coil internal
circuit and input to the PCM.
...
Headlight Auto Leveling System
Outline
Automatically adjusts the headlight optical axis in response to changes in
load and passenger conditions to prevent blinding of oncoming vehicles from
headlight glare and to assure a range of visibility.
The AFS control module performs headlight auto leveling system fail ...