B1024

When measurements are requested in this table, use J 39200 DMM 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 Diagram Information 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 you first turn the ignition switch to the ON position, the inflatable restraint Sensing and Diagnostic Module (SDM) performs tests to diagnose critical malfunctions within itself. Upon passing these tests IGNITION 1, 23 VLR and deployment loop voltages are measured to make sure they are within their respective normal voltage ranges. The SDM monitors the voltages at DRIVER SIDE LOW terminal 10 and PASSENGER SIDE LOW terminal 3 to detect shorts to ground in the inflator module circuits.

CONDITIONS FOR SETTING THE DTC
^ The driver deployment loop is not open.
^ The passenger deployment loop is not open.
^ The passenger deployment loop is not shorted to voltage.
^ The voltage at PASSENGER SIDE LOW terminal 3 is more than 1.5 volts.
^ The voltage at DRIVER SIDE LOW terminal 10 is less than 1.5 volts for 500 milliseconds.

The following tests check for this DTC. These tests occur when IGNITION 1 is within the normal operating voltage range.
^ POWER-ON-When the malfunction is detected in this test, the RESISTANCE MEASUREMENT test will not he performed.
^ CONTINUOUS MONITORING

ACTION TAKEN WHEN THE DTC SETS
^ The SDM sets a diagnostic trouble code.
^ The SDM turns ON the AIR BAG warning lamp.

CONDITIONS FOR CLEARING THE DTC
^ Current DTC.
The voltage at DRIVER SIDE LOW terminal 10 is more than 1.5 volts for 500 milliseconds.
^ History DTC.
- You issue a scan tool CLEAR CODES command.
- Once 250 malfunction free ignition cycles have occurred.

DIAGNOSTIC AIDS
A short-to-ground in the inflatable restraint steering wheel module circuit can cause an intermittent condition. Moving wires while monitoring DRIVER SENSELO may help locate the fault. Inspect CKTs G/R and G carefully for cutting or chafing. The diagnostic table directs the technician to note the entry value of DRIVER SENSELO. Comparing the value of DRIVER SENSELO can be helpful in determining if an intermittent condition exists.

DTC TABLE TEST DESCRIPTION
Numbers below refer to step numbers on the diagnostic table.
2. This test determines the DRIVER SIDE LOW voltage measured by the inflatable restraint Sensing and Diagnostic Module (SDM).
3. This test isolates the malfunction to one side of the inflatable restraint steering wheel module coil yellow 2-way connector located near the base of the steering column.
4. This test determines whether the malfunction is in the inflatable restraint steering wheel module coil or the inflatable restraint steering wheel module.
7. This test determines whether the malfunction is in CKT G/R.
9. This test determines whether the malfunction is in CKT G.