AIR BAG Indicator Does Not Come ON

CIRCUIT DESCRIPTION
The ignition switch supplies ignition 1 voltage to the inflatable restraint sensing and diagnostic module (SDM) using the AIR BAG fuse. The ignition switch also supplies battery voltage to the AIR BAG indicator using the IG fuse. The AIR BAG indicator is connected to the AIR BAG indicator output of the SDM. When the ignition switch is first turned to the ON position, the SDM responds by flashing the AIR BAG indicator seven times. If the ignition 1 voltage is outside of the normal operating voltage range (9.0 - 16.0 volts) for more than 25 ms, the AIR BAG indicator will turn ON with no DTCs set.

DIAGNOSTIC AIDS
Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with a reappearance of the malfunction. If an intermittent malfunction exists, refer to Diagnostic Aids for Circuit Testing and Wiring Repair procedures..

TEST DESCRIPTION

Steps 1 - 7:

The number(s) below refer to the step number(s) on the diagnostic table.
3. Tests for proper operation of the Air Bag Indicator Control circuitry. With the SDM connector disconnected, the shorting bar connects the Air Bag Indicator Control circuit to ground and should illuminate the indicator.