Self-diagnostic System

A self-diagnostic circuit is built into the SRS unit; when the ignition switch is turned to ON (II), the SRS indicator comes on and goes off after about 6 seconds if the system is operating normally. If the indicator does not come on, or if it does not go off after 6 seconds, or comes on while driving, it indicates a problem in the system. The system must be inspected and repaired as soon as possible.

For better serviceability, the SRS unit memory stores DTCs related to the cause of the malfunction, the SRS unit is connected to the data link connector (DLC). This information can be read with the HDS when it is connected to the DLC (see DTC (DIAGNOSTIC TROUBLE CODES)  ).