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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 B0083-B0088 >> Circuit/System Testing

Circuit/System Testing

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.
  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the appropriate electrical connector:
    • B59 Front Impact Sensor
    • B63 Side Impact Sensor
  3. Test for less than 10 ohms between the test points:Low Reference terminal 2 & Ground
    • If 10 ohms or greater 
    1. Disconnect the electrical connector:K36 Inflatable Restraint Sensing and Diagnostic Module
    2. Test for less than 2 ohms between the test points:Low Reference terminal 2 @ Component harness & The other end of the circuit @ Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component:K36 Inflatable Restraint Sensing and Diagnostic Module
    • Go to next step: If less than 10 ohms 
  4. Test for less than 1 V between the test points:Signal circuit terminal 1 & Ground
    • If 1 V or greater 
    1. Disconnect the electrical connector:K36 Inflatable Restraint Sensing and Diagnostic Module
    2. Test for less than 1 V between the test points:Signal circuit terminal 1 @ Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component:K36 Inflatable Restraint Sensing and Diagnostic Module
    • Go to next step: If less than 1 V 
  5. Connect a DMM between the test points:Signal circuit terminal 1 & Ground & Set - (min/max)
  6. Ignition - On / Vehicle - In Service Mode

    Verify the DMM displays between 4 and 9 V.

    • If less than 4 V 
    1. Disconnect the electrical connector:K36 Inflatable Restraint Sensing and Diagnostic Module
    2. Test for infinite resistance between the test points:Signal circuit terminal 1 & Low Reference terminal 2
      • If less than infinite resistance - Repair the short between the circuits.
      • Go to next step: If infinite resistance
    3. Test for infinite resistance between the test points:Signal circuit terminal 1 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    4. Test for less than 2 ohms between the test points:Signal circuit terminal 1 @ Component harness & The other end of the circuit @ Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component:K36 Inflatable Restraint Sensing and Diagnostic Module
    • If greater than 9 V 
    1. Disconnect the electrical connector:K36 Inflatable Restraint Sensing and Diagnostic Module
    2. Ignition - On / Vehicle - In Service Mode
    3. Test for less than 1 V between the test points:Signal circuit terminal 1 @ Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component:K36 Inflatable Restraint Sensing and Diagnostic Module
    • Go to next step: If between 4 and 9 V 
  7. Connect all electrical connectors.
  8. Ignition - On / Vehicle - In Service Mode
  9. Clear the DTCs.
  10. Operate the vehicle within the Conditions for Running the DTC.
  11. Verify the DTC does not set.
    • If the DTC sets 

      Replace the appropriate component:

    • B59 Front Impact Sensor
    • B63 Side Impact Sensor
    • Go to next step: If the DTC does not set 
  12. All OK.
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