Air Bag Warning Lamp Comes On Steady

Circuit Description
When the ignition switch is first turned to RUN, the GAUGES Fuse applies battery voltage to the AIR BAG warning lamp that is connected to INFLATABLE RESTRAINT INDICATOR, terminal 7. The SIR Fuse applies battery voltage to the IGNITION 1 input, terminal 10. The inflatable restraint Sensing and Diagnostic Module (SDM) responds by flashing the AIR BAG warning lamp seven times. If IGNITION 1 is outside of the normal operating voltage range (8.2 volts-17.1 volts), the AIR BAG warning lamp will come ON solid with no DTCs set.

Diagnostic Aids
In order to disable the shorting bar from terminal 6 to terminal 7 inside the inflatable restraint Sensing and Diagnostic Module (SDM) harness connector, the following two conditions must be met:
^ The SDM harness connector must be properly connected to the SDM.
^ The Connector Position Assurance (CPA) must be properly installed in the SDM harness connector.

When measurements are requested in this table, use the J 39200 Digital Multimeter with the correct terminal adapter from the J 35616-A Connector Test Adapter Kit. When an inspection for proper connection is requested, refer to Intermittents and Poor Connections. When a wire, connector or terminal repair is requested, use the J 38125-B Terminal Repair kit. Refer to Wiring Repair. Intermittent Problems SIR Wiring Repair

Test Description
The numbers below refer to the step numbers on the diagnostic table:
2. This test inspects for sufficient IGNITION 1 voltage applied to the SDM.
3. This test inspects for excessive IGNITION 1 voltage applied to the SDM.
4. This test inspects for a properly installed CPA.
6. This test determines if the SDM is turning on the AIR BAG warning lamp.
7. This test inspects for a damaged shorting bar.
9. This test determines whether the malfunction is a short to ground in CKT 358.
12. An open SIR Fuse would cause the AIR BAG warning lamp to come on steady.
13. This test inspects whether a short to ground caused the SIR Fuse to open.
14. This test determines whether the short to ground is due to a short in the wiring or internal to the SDM.
16. This test determines whether the short to ground is due to a short in the wiring or internal to the inflatable restraint Instrument Panel (IP) module switch.
21. This test inspects for a disconnected SDM.
27. This test inspects for an open in the IGNITION 1 circuit.