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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Diagnostic Information and Procedures >> DTC B0016, B0018, B0023 or B0025: Left/Right Roof Rail Air Bag Deployment Loop >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF. Scan tool disconnected. Disconnect the harness connector at the appropriate F105 Roof Rail Air Bag. It may take up to 2 min for all vehicle systems to power down.
  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.
  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. Disconnect the X2 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.
    • If less than 11 V 
  5. Ignition 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. Install a 3 A fused jumper wire between the control circuit terminals 1 and 2. Ignition ON.
  8. Verify the scan tool Deployment Loop Resistance parameter is less than 2 Ω.
    • If 2 Ω or greater 
    1. Ignition 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, connect the harness connector at the F105 Roof Rail Air Bag, press in the CPA (if equipped) until an audible and/or tactile click is heard.
  10. Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.
  11. Verify DTC B0016 or B0023 is not set.
    • If DTC B0016 or B0023 is set 

      Test or replace the F105 Roof Rail Air Bag.

    • If DTC B0016 or B0023 is not set 
  12. All OK.
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