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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0014, B0021, B0031 or B0038: Seat Side Air Bag Deployment Loops >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF/Vehicle OFF, disconnect the scan tool and then disconnect the appropriate F106 Seat Side Air Bag harness connector.
  2. Test for greater than 25 Ω between the control circuit terminals 1 and 2.
    • If 25 Ω or less 
    1. Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
    2. Test for infinite resistance between the two control circuits.
      NOTE: Some connectors may be equipped with shorting bars as a safety component to prevent accidental inflator deployment. When testing on a connector with shorting bars, the shorting bars must be disabled to ensure accurate test results. Insert an appropriate pick from EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow accurate test results. Take care not to damage the connector, shorting bar or terminal when depressing the shorting bar.
      • If less than infinite resistance, repair the short between the two circuits.
      • If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
    • If greater than 25 Ω 
  3. Ignition ON/Vehicle in Service Mode.
  4. Test for less than 11 V between the control circuit terminals listed below and ground:
    • Control circuit terminal 1
    • Control circuit terminal 2
    • If 11 V or greater 
    1. Ignition OFF/Vehicle OFF, disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module, Ignition ON/Vehicle in Service Mode.
    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.
    • If less than 11 V 
  5. Ignition OFF/Vehicle OFF.
  6. Test for greater than 25 Ω between the control circuit terminals listed below and ground:
    • Control circuit terminal 1
    • Control circuit terminal 2
    • If 25 Ω or less 
    1. Disconnect the X2 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.
      • If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
    • If greater than 25 Ω 
  7. Ignition OFF/Vehicle OFF, install a 3 A fused jumper wire between the control circuit terminals 1 and 2. Ignition ON/Vehicle in Service Mode.
  8. Verify the scan tool Deployment Loop Resistance parameter is less than 2 Ω.
    • If 2 Ω or greater 
    1. Ignition OFF/Vehicle OFF, disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
    2. 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.
    • If less than 2 Ω 
  9. Ignition OFF/Vehicle OFF, connect the harness connector at the F106 Seat Side Air Bag, press in the CPA (if equipped) until an audible and/or tactile click is heard.
  10. Ignition ON/Vehicle in Service Mode, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.
  11. Verify DTC B0014, B0021, B0031 or B0038 is not set.
    • If DTC B0014, B0021, B0031 or B0038 is set 

      Replace the appropriate F106 Seat Side Air Bag.

    • If DTC B0014, B0021, B0031 or B0038 is not set 
  12. All OK.
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