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Home › Chevrolet › 2020 › Impala LT › Repair and Diagnosis › Body & Frame › Body, Cab Control Systems › Vehicle Access System › Diagnostic Information and Procedures › DTC B2730 › Component Testing

Component Testing

  1. Ignition/Vehicle - Off
  2. Disconnect the appropriate electrical connector:
    • S58B Rear Compartment Lid Unlatch Switch - Interior
    • S48A Multifunction Switch - Instrument Panel
  3. Test for infinite resistance between the test points:
    • S58B Rear Compartment Lid Unlatch Switch - Interior: Signal terminal 1 & Ground terminal 2 - Not Pressed
    • S48A Multifunction Switch - Instrument Panel: Signal terminal 7 & Ground terminal 2 - Not Pressed
    • If less than infinite resistance 

      Replace the component: S58B Rear Compartment Lid Unlatch Switch - Interior/S48A Multifunction Switch - Instrument Panel

    • Go to next step: If infinite resistance 
  4. Test for less than 3 ohms between the test points:
    • S58B Rear Compartment Lid Unlatch Switch - Interior: Signal terminal 1 & Ground terminal 2 - Pressed
    • S48A Multifunction Switch - Instrument Panel: Signal terminal 7 & Ground terminal 2 - Pressed
    • If 3 ohms or greater 

      Replace the component: S58B Rear Compartment Lid Unlatch Switch - Interior/S48A Multifunction Switch - Instrument Panel

    • Go to next step: If less than 3 ohms 
  5. All OK.
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