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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Diagnostic Information and Procedures >> Airbag Indicator Malfunction (Passenger) >> Circuit/System Testing

Circuit/System Testing

NOTE:

When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.

  • Passenger air bag disable on/off indicator.
  • Passenger air bag disable on/off indicator wiring harness.
  1. Ignition OFF, disconnect the harness connector at the S48C Multifunction Switch 1 - Instrument Panel.
  2. Test for less than 10Ω between the ground circuit terminal 1 and ground.
    • If 10Ω or greater 
    1. Test for less than 2Ω in the ground circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, repair the open/high resistance in the ground connection.
    • If less than 10Ω 
  3. Ignition ON, command the Passenger Air Bag Off Indictor OFF with a scan tool.
  4. Verify a test lamp does not illuminate between the control circuit terminal 2 and ground.
    • If the test lamp illuminates 
    1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.
    2. Test for less than 1V between the control circuit and ground.
      • If 1V or greater, repair the short to voltage on the circuit.
      • If less than 1V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
    • If the test lamp does not illuminate 
  5. Command the Passenger Air Bag Off indicator ON with a scan tool.
  6. Verify a test lamp illuminates between the control circuit terminal 2 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
    2. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
    3. Test for less than 2Ω in each control circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
    • If the test lamp illuminates 
  7. Command the Passenger Air Bag On Indicator OFF with a scan tool.
  8. Verify a test lamp does not illuminate between the control circuit terminal 3 and ground.
    • If the test lamp illuminates 
    1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.
    2. Test for less than 1V between the control circuit and ground.
      • If 1V or greater, repair the short to voltage on the circuit.
      • If less than 1V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
    • If the test lamp does not illuminate 
  9. Command the Passenger Air Bag On Indicator ON with a scan tool.
  10. Verify a test lamp illuminates between the control circuit terminal 3 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
    2. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
    3. Test for less than 2Ω in each control circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
    • If the test lamp illuminates 
  11. Test or replace the S48C Multifunction Switch 1 - Instrument Panel.
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