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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC B3140 or B3150: Driver Door Unlock/Lock Switch Circuit >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

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 3 - Switch - Not Pressed
    • Signal terminal 4 & Ground terminal 3 - Switch - Not Pressed
    • If less than infinite resistance 

      Replace the component: S13 Door Lock Switch

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

      Replace the component: S13 Door Lock Switch

    • If less than 3 ohms 
  5. Test for less than 3 ohms between the test points: Signal terminal 2 & Ground terminal 3 - Unlock Switch - Pressed
    • If 3 ohms or greater 

      Replace the component: S13 Door Lock Switch

    • If less than 3 ohms 
  6. All OK.
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