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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Power Door Lock System) >> Diagnostic Information and Procedures >> DTC B3140, B3145, B3150, or B3155 >> Component Testing

Component Testing

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S13 Door Lock Switch - Test

  1. Ignition/Vehicle - Off
  2. Disconnect the appropriate electrical connector: S13 Door Lock Switch
  3. Test for infinite resistance between the test points:
    • Signal terminal 2 & Ground terminal 4 - Lock Switch - Not Pressed
    • Signal terminal 3 & Ground terminal 4 - Unlock Switch - Not Pressed
    • If less than infinite resistance 

      Replace the component:S13 Door Lock Switch

    • Go to next step: If infinite resistance 
  4. Test for less than 3 ohms between the test points:Signal terminal 2 & Ground terminal 4 - Lock Switch - Pressed
    • If 3 ohms or greater 

      Replace the component:S13 Door Lock Switch

    • Go to next step: If less than 3 ohms 
  5. Test for less than 3 ohms between the test points:Signal terminal 3 & Ground terminal 4 - Unlock Switch - Pressed
    • If 3 ohms or greater 

      Replace the component:S13 Door Lock Switch

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