AIR BAG Warning Lamp Does Not Come On

Diagnostic Chart (Part 1 Of 3):

Diagnostic Chart ( Part 2 Of 3):

Diagnostic Chart ( Part 3 Of 3):

Wiring Diagram:

CIRCUIT DESCRIPTION
The ignition switch supplies Ignition 1 voltage to the inflatable restraint Sensing and Diagnostic Module (SDM) at terminal A1 using the AIR BAG fuse. The ignition switch also supplies Ignition 1 voltage to the AIR BAG warning indicator using the IG fuse. The AIR BAG warning indicator is connected to the AIR BAG indicator control terminal A9 of the SDM. When the ignition switch is first turned to the ON position, the SDM responds by flashing the AIR BAG warning indicator seven 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 Intermittent and Poor Connections in Wiring Systems. When a wire, connector or terminal repair is requested, use the J 38125-B Terminal Repair Kit and refer to Wiring Repairs in Wiring Systems.

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table:
2. This step checks to see if the malfunction is in the inflatable restraint sensing and diagnostic module (SDM) circuitry or in the instrument cluster power feed circuitry.
3. This step checks to see if voltage is present in the AIR BAG warning indicator control circuit.
4. This step checks to see if there is a short to B+ in the AIR BAG warning indicator control circuit.
6. This step checks to see if the instrument cluster wiring harness connector C1 is damaged or corroded.
8. This step checks to see if the open is due to a bad bulb.
10. This step checks to see if there is an open or a high resistance condition in AIR BAG warning indicator control circuit.
13. This step checks to see if power is available to the instrument cluster power feed circuit.
15. This step determines if there is a short to ground in the instrument cluster power feed circuit or if there is a malfunctioning instrument cluster.
19. This step checks to see if the instrument cluster wiring harness connector C1 is damaged or corroded.
21. This step determines if there is an open or a high resistance condition in the instrument cluster power feed circuit or if there is an open or a high resistance condition in the power feed circuit to the IG fuse.