B1017

Circuit Description
When you first turn the ignition switch to the RUN position, the Inflatable Restraint Sensing and Diagnostic Module (SDM) performs tests in order to diagnose critical malfunctions within itself. Next the SDM measures Ignition Positive Voltage in order to ensure they are within the normal voltage range. Then the SDM proceeds with the Deployment Loop Continuity test. During the Deployment Loop Continuity test, the SDM measures the voltage difference between Passenger High and Passenger Low.

Conditions for Setting the DTC
^ The voltage difference between Passenger High terminal 1 and Passenger Low terminal 4 is more than or equal to 400 millivolts.
^ The malfunction must be present for at least 500 milliseconds during one of the following tests:
- Deployment Loop Continuity
If the malfunction is detected in this test, the Resistance Measurement test will not be 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 MIL/DTC
^ Current DTC
The voltage difference between Passenger High terminal 1 and Passenger Low terminal 4 is less than 400 millivolts for 500 milliseconds.
^ History DTC
- You issue a scan tool Clear DTCs command.
- 250 ignition cycles have passed since the last malfunction.

Diagnostic Aids
The following conditions may cause an intermittent condition:
^ A poor connection at the Inflatable Restraint Instrument Panel (IP) module harness connector terminals A and B
^ A poor connection at the SDM terminals 1 and 4
^ An open in circuit 1403 (WHT/BLK)
^ An open in circuit 1404 (DK GRN/WHT)

When measurements are requested in this table, use the J 39200 Digital Multimeter with the correct terminal adapter from the J 35616-A Connector Test Adapter Kit. When an inspection for proper connection is requested, refer to Intermittents and Poor Connections Diagnosis in Wiring Systems. When a wire, connector or terminal repair is requested, use the J 38125-B Terminal Repair Kit. Refer to Wiring Repairs in Wiring Systems.

Test Description
The numbers below refer to the step numbers on the diagnostic table:
2. This test determines the deployment loop voltage difference measured by the Inflatable Restraint Sensing and Diagnostic Module (SDM).
3. This test checks for proper contact or corrosion of the yellow 2-way connector.
10. This test isolates the malfunction to one side of the Inflatable Restraint IP module yellow 2-way connector.
12. This test checks for proper contact or corrosion of the SDM harness connector.
17. This test determines whether the malfunction is in circuit 1403 (WHT/BLK).
19. This test determines whether the malfunction is in circuit 1404 (DK GRN/WHT).