Diagnosis With Air Bag Warning Lamp

ON BOARD DIAGNOSTIC (OBD) SYSTEM


Diagnosis with Air Bag Warning Lamp


SELF DIAGNOSIS FUNCTION
There are two self diagnosis functions with air bag warning lamp per the following items.
- USER MODE
- DIAGNOSIS MODE

CHANGE DIAGNOSIS MODE
- Diagnosis mode changes from user mode to diagnosis mode when changing operation is performed.
- In user mode, when SRS air bag warning lamp is not blinking, changing to diagnosis mode by ignition switch operation is not possible.
- In diagnosis mode, when repair is complete and system is normal, the mode changes to user mode when ignition switch is turned from OFF to ON.

PROCEDURE TO CHANGE DIAGNOSIS MODE
1. Turn ignition switch from OFF to ON.
2. SRS air bag lamp turns ON for 7 second and turns OFF, then turn ignition switch OFF within 1second after the lamp turns OFF.
3. After turning ignition switch OFF, wait for 3 seconds or more.
4. Repeat operation 1 to 3 for 2 times so that operation 1 to 3 is repeated for 3times in total.
5. Turn ignition switch from OFF to ON. Diagnosis mode changes.

USER MODE
In USER MODE, air bag warning lamp on combination meter blinks when a malfunction is detected and warns the customer (driver).

How to Read Air Bag Warning Lamp
1. Turn the ignition switch from OFF to ON, and check that the air bag warning lamp blinks.
2. Compare the air bag warning lamp blinking pattern with the examples.

Air Bag Warning Lamp Examples






DIAGNOSIS MODE
The diagnosis mode can only be switched when a malfunction is detected in the user mode. Malfunctioning system is indicated according to blinking pattern of air bag warning lamp.

How to Read Air Bag Warning Lamp
1. Follow the procedures of "PROCEDURE TO CHANGE DIAGNOSIS MODE", and switch to the diagnosis mode.
2. Turn ignition switch ON. Check the blinking pattern of air bag warning lamp.
There are 2 blinking patterns for the air bag warning lamp as per the following items.
- Front air bag system: 3 second blink followed by a 0.5 second blink repeated.
- Side air bag system: Two 1.5 second blinks followed by a 0.5 second blink repeated.











How to Erase Self-diagnostic Result
After a malfunction is repaired, turn the ignition switch OFF for one second or more, then turn ignition switch
ON. The diagnosis mode returns to the user mode. At that time the self-diagnostic result is cleared.

EXAMPLE OF AIR BAG WARNING LAMP OPERATION IN THE DIAGNOSIS MODE

System Normal
When system is normal.






Single System Malfunction
- Front air bag system
When air bag diagnosis sensor unit system (Item display 1) is malfunctioning.





- Side air bag system
When curtain air bag module LH system (Item display 1) is malfunctioning.






Multiple Systems Malfunction
- Front air bag system
When driver air bag module (Item display 1) and air bag diagnosis sensor unit system (Item display 2) are malfunctioning.





- Side air bag system
When satellite sensor LH (Item display1) and curtain air bag module LH system (Item display 2) are malfunctioning.





- Front air bag system and side air bag system
When driver air bag module (Item display 1) and satellite sensor RH (Item display2) are malfunctioning.