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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 82 (Supplemental Restraint System) >> Diagnostic Information and Procedures >> DTC B0017 or B0024 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Refer to:SIR Service Precautions 
  • Inspect the terminals of the following components and connectors for damage or corrosion and repair or replace as necessary:
    • F114 Knee Air Bag
    • K36 Inflatable Restraint Sensing and Diagnostic Module
    • Inline Harness Connector
  • The connector position assurance (CPA) should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly.
  • If the condition is intermittent, wiggle the related wiring harnesses and connectors, with the ignition/vehicle on or engine running, while monitoring the scan tool circuit status parameters for the component. The parameters will display if there is a condition with the circuit or a connection.
  • If the condition is intermittent or cannot be duplicated, disconnect the connectors and add dielectric grease or lubricant (Nyogel 760G or equivalent, meeting GM specification 9986087). This procedure will correct the high resistance condition due to terminal fretting corrosion.
    • F114 Knee Air Bag & Harness Connector
    • K36 Inflatable Restraint Sensing and Diagnostic Module & Harness Connector
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify the appropriate scan tool parameter:Deployment Loop 1 - 20 Resistance = 2.1 to 4.0 ohms
    • If not between 2.1 and 4.0 ohms 

      Refer to:Circuit/System Testing

    • Go to next step: If between 2.1 and 4.0 ohms 
  3. Verify the appropriate scan tool parameter:Deployment Loop 1 - 20 Resistance = The value should not spike or drop out.

    Perform the action while monitoring the parameter:

    • Wiggle the harness and connector:F114 Knee Air Bag
    • Wiggle the harness and connector:K36 Inflatable Restraint Sensing and Diagnostic Module
    • Wiggle the harness and connector:Inline Harness Connector
    • If the value spikes or drops out 
    1. Ignition/Vehicle & All vehicle systems - Off
    2. Verify the condition does not exist with the component and repair as necessary:
        NOTE:

        Apply dielectric grease or lubricant (Nyogel 760G or equivalent, meeting GM specification 9986087) to each connector terminal.

      • F114 Knee Air Bag @ Wiring Harness Connector - Corrosion/Defective/Loose/Poor Connection/Visible Damage
      • K36 Inflatable Restraint Sensing and Diagnostic Module @ Wiring Harness Connector - Corrosion/Defective/Loose/Poor Connection/Visible Damage
      • Inline Harness Connector - Corrosion/Defective/Loose/Poor Connection/Visible Damage
    • Go to next step: If the value does not spike or drop out 
  4. All OK.
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