Symptom Related Diagnostic Procedures

Circuit Description
The AIRBAG indicator will stay on if the sensing and diagnostic module (SDM) connector is not securely attached to the SDM. There is a shorting bar in the SDM connector which completes the circuit between the indicator lamp circuit and ground. The shorting bar is disengaged when the connector is properly attached.

When the ignition switch is first turned ON, Ignition 1 voltage is applied to the instrument fuse for the indicator lamp and also to the AIRBAG fuse for the SDM input terminal 10. If Ignition 1 voltage is outside the range of 8.2 - 16 volts, the AIRBAG indicator will come on and stay on with no DTCs set.

A short to ground between the SDM and the indicator lamp can also cause the AIRBAG indicator to stay on.

Test Description
The number below refers to Step 8 on the diagnostic table.

8. Refer to the caution below.

Steps 1 - 10:

AIRBAG Warning Lamp Stays On with Ignition Switch ON

CAUTION: The sensing and diagnostic module (SDM) can maintain sufficient voltage to deploy the airbags for 10 minutes after the ignition is OFF and the fuse has been removed If the airbags are not disconnected, do not begin service until 10 minutes have passed after disconnecting power to the SDM. Otherwise, injury could result.