SRS Air Bag Diagnosis: Introduction

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

The SRS system is controlled by the SRS-ECU. The SRS-ECU judges how severe a collision is by detecting signals from the left and right side impact sensors, front air bag analog G-sensor and front air bag safing G-sensor and side-airbag safing G-sensor. If the impact is over a predetermined level, the SRS-ECU sends an ignition signal. At this time, if the safing G-sensor is on, the SRS air bags will inflate. The SRS warning light in the combination meter alerts a malfunction of the SRS system. If the following symptoms occur even when the vehicle has not been in a collision, there may be a malfunction in the SRS system.

The SRS warning light does not go off within approximately seven seconds after the ignition switch has been turned to the "ON" position.
The SRS warning light does not illuminate when the ignition switch is turned to the "ON" position.

Refer to the POST-COLLISION DIAGNOSIS when inspecting and servicing the vehicle that has been in a collision (Refer to POST-COLLISION DIAGNOSIS ).