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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B067F or B0680 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
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 S48A Multifunction Switch - Instrument Panel.
  2. Test for less than 10 Ω between the ground circuit terminal 1 and ground.
    • If 10 Ω or greater 

      Repair the open/high resistance in the circuit.

    • Go to next step: If less than 10 Ω 
  3. Ignition ON, with a scan tool, command the passenger air bag OFF indictor OFF.
  4. Test for less than 11 V between the control circuit terminal 2 and ground.
    • If 11 V or greater 
    1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.
    2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
    • Go to next step: If less than 11 V 
  5. With a scan tool, command the passenger air bag OFF indicator ON.
  6. Test for greater than 4 V between the control circuit terminal 2 and ground.
    • If 4 V or less 
    1. Ignition OF, 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 2 Ω in each control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
    • Go to next step: If greater than 4 V 
  7. With a scan tool, command the passenger air bag ON indicator OFF.
  8. Test for less than 11 V between the control circuit terminal 3 and ground.
    • If 11 V or greater 
    1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.
    2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
    • Go to next step: If less than 11 V 
  9. With a scan tool, command the passenger air bag ON indicator ON.
  10. Test for greater than 4 V between the control circuit terminal 3 and ground.
    • If 4 V or less 
    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 2 Ω in each control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
    • Go to next step: If greater than 4 V 
  11. Replace the S48A Multifunction Switch - Instrument Panel.
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