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AIR BAG Warning Lamp Comes On Steady

AIR BAG Warning Lamp Comes On Steady (Part 1 Of 3):




AIR BAG Warning Lamp Comes On Steady (Part 2 Of 3):




AIR BAG Warning Lamp Comes On Steady (part 3 Of 3):




Wiring Diagram:





CIRCUIT DESCRIPTION
When the ignition switch is first turned to the ON position, the IG-COIL Fuse applies battery voltage to the AIR BAG warning lamp that is connected to the AIR BAG INDICATOR, terminal 7. The AIR BAG fuse applies battery voltage to the IGNITION 1 input, terminal 8. 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 to 17.1 volts), then 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 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 J 39200 Digital Multimeter with the correct terminal adapter from J 35616-A Connector Test Adapter Kit. When a check for proper connection is requested, refer to Intermittents and Poor Connections. When a wire, connector or terminal repair is requested, use J 38125-B Terminal Repair Kit and refer to Wiring Repair. Intermittents and Poor Connections

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table.
2. This test checks for sufficient IGNITION 1 voltage applied to the SDM.
3. This test checks for excessive IGNITION 1 voltage applied to the SDM.
4. This test checks for a correctly installed CPA.
6. This test determines if the SDM is turning the AIR BAG warning lamp ON.
7. This test checks for a damaged shorting bar.
9. This test determines whether the malfunction is a short to ground in the ORN wire.
10. This test checks for a short between the ORN wire and the BLK wire.
14. This test checks for an open AIR BAG Fuse. An open AIR BAG Fuse would cause the AIR BAG warning lamp to come ON steady.
15. This test determines if a short to ground caused the AIR BAG Fuse to open.
16. This test determines if the short to ground is due to a short in the wiring or internal to the SDM.
20. This test checks for a disconnected SDM.
26. This test checks for an open in the IGNITION 1 circuit.