When the ignition switch is turned to ON, the sensing and diagnostic module (SDM) will perform a turn-on test to diagnose critical malfunctions within the SDM itself.

If the SDM has been used 5 times for 5 explosions of belt pretensioners or side air bags, the SDM should also be replaced.

The count of the belt pretensioner and side air bag explosion is over 5 in the SDM.

Caution: Refer to Sensing and Diagnostic Module Voltage after Ignition is Turned Off Caution in the Preface section.

Caution: Refer to Sensing and Diagnostic Module Handling Caution in the Preface section.