Warning Lamp Comes "ON" Steady

Circuit Description
When the ignition switch is first turned to the RUN position, the GAUGES fuse applies battery voltage to the AIR BAG warning lamp. The AIR BAG warning lamp is connected to the supplemental RESTRAINT INDICATOR, terminal 7. The SIR fuse applies battery voltage to the Air Bag Indicator Control, terminal 10. The supplemental restraint sensing and diagnostic module (SDM) flashes the AIR BAG warning lamp 7 times. If IGNITION is outside of the normal operating voltage range (8.2 - 17.1 volts), the AIR BAG warning lamp turns ON solid with no DTCs set.

Diagnostic Aids
In order to disable the shorting bar from terminal 6 to terminal 7 inside the 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.

Step 1:

Steps 2 - 5:

Steps 6 - 8:

Steps 9 - 13:

Steps 14 - 17:

Steps 18 - 23:

Steps 24 - 29:

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 fora 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 supplemental restraint IP module switch.
21. This test inspects for a disconnected SDM.
27. This test inspects for an open in the IGNITION 1 circuit.