Table B Air Bag Warning Lamp Comes On Steady

When measurements are requested in this table, use J 39200 DVM 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 in Diagrams. When a wire, connector or terminal repair is requested, use J 38125-A TERMINAL REPAIR KIT and refer to WIRING REPAIR.

CIRCUIT DESCRIPTION

When the ignition switch is first turned to RUN, the ION 1 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 (8.2-17.1 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 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.

TABLE TEST DESCRIPTION

Number(s) below refer to step number(s) 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 on the AIR BAG warning lamp.
7. This test checks for a damaged shorting bar.
9. This test determines whether the malfunction is a short-to-ground in CKT 358.
10. This test checks for a short between CKT 358 and CKT 1751.
14. An open SIR Fuse would cause the AIR BAG warning lamp to come ON steady.
15. This checks whether a short-to-ground caused the SIR Fuse to open.
16. This test determines whether 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.