SRS Air Bag Warning Lamp

SRS Air Bag Warning Light

DESIGN/PURPOSE

The warning light warns the driver that SRS air bag system is not normal.

BULB CHECK

For 7 seconds after the ignition switch is turned ON.

SYSTEM DIAGRAM

note	1: For DTCs of the SRS air bag system, refer to DTC Index. 2: For occupant detection system control unit, malfunction signal includes the zero point reset not yet performed.

SIGNAL PATH

When a malfunction is detected, air bag diagnosis sensor unit transmits the warning signal to combination meter.
Combination meter turns SRS air bag warning light ON, according to the received signal.

LIGHTING CONDITION

When a malfunction of the following part or status is detected.

Deployment of air bag
Air bag diagnosis sensor unit
Combination meter
Circuit between air bag diagnosis sensor unit and combination meter
Battery voltage not normal (approximately 9 V or less, or 16 V or more)
Each air bag module main unit
Each seat belt pre-tensioner main unit
Crash zone sensor main unit
Each satellite sensor
Circuit between each air bag module and air bag diagnosis sensor unit
Circuit between each seat belt pre-tensioner and air bag diagnosis sensor unit
Circuit between crash zone sensor and air bag diagnosis sensor unit
Circuit between each satellite sensor and air bag diagnosis sensor unit
Occupant detection system control unit (Includes the zero point reset not yet performed.)

note	For the relation between warning light and DTC, refer to DTC Index.

SHUTOFF CONDITION

When Being Turned ON Due to Deployment of Air Bag

Replace air bag diagnosis sensor unit.

When Turned ON Due to a Malfunction of SRS Air Bag Warning Light Circuit

Repair SRS air bag warning light circuit system.

When Turned ON Due to a Malfunction of Air Bag Module or Air Bag Module Circuit

Repair the malfunctioning part. Erase self-diagnosis result memory.

When Turned ON Due to a Malfunction of Occupant Detection System Control Unit

TIMING CHART