AIR BAG Warning Lamp Does Not Come On

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 that is connected to the Air Bag Indicator Control, terminal 7. The AIR BAG 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 7 times. When measurements are requested in this table, use the J 39200 DMM with the correct terminal adapter from the J 35616-A Connector Test Adapter Kit. When an inspection for proper connection is requested, refer to Testing for Electrical Intermittents. When a wire, connector or terminal repair is requested, use the J 38125-B Terminal Repair kit and refer to Wiring Repairs.

Test Description
The numbers below refer to the step numbers on the diagnostic table:
2. This test determines whether the malfunction is in the Inflatable Restraint Sensing and Diagnostic Module (SDM) circuitry or in the instrument cluster power feed circuitry.
3. This test determines whether voltage is present in the warning lamp circuit.
4. This test isolates circuit 358 and inspects for a short in circuit 358 to B+.
6. This test determines if the malfunction is in the instrument cluster connector.
8. This test determines if the open is due to a bad bulb.
10. This test isolates an open in the warning lamp circuitry.
13. This test inspects whether power is available to the instrument cluster power feed circuit.
14. This test inspects for a short from the instrument cluster power feed circuit to ground.
15. This test determines whether the short to ground is due to a short in the wiring or internal to the instrument cluster.
19. This test determines if the malfunction is in the instrument cluster connector.
21. This test determines whether the malfunction is due to an open power feed circuit from the GAUGES Fuse.