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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 >> Circuit/System Testing

Circuit/System 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.
  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: S13D Door Lock Switch - Driver & S13P Door Lock Switch - Passenger
  3. Ignition - On/Vehicle - In Service Mode
  4. Verify the scan tool parameter: Driver Door Lock Switch = Inactive
    • If not the specified state 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: X6 & X7 @ K9 Body Control Module
    3. Test for infinite resistance between the test points:
      • S13D Door Lock Switch - Driver: Signal circuit terminal 2 @ Component harness & Ground
      • S13D Door Lock Switch - Driver: Signal circuit terminal 4 @ Component harness & Ground
      • S13P Door Lock Switch - Passenger: Signal circuit terminal 2 @ Component harness & Ground
      • S13P Door Lock Switch - Passenger: Signal circuit terminal 4 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: K9 Body Control Module
    • If the specified state 
  5. Ignition/Vehicle - Off
  6. Connect the electrical connector: S13D Door Lock Switch - Driver
  7. Ignition - On/Vehicle - In Service Mode
  8. Operate the component: S13D Door Lock Switch - Driver - Lock & Unlock

    Verify the scan tool parameter: Driver Door Lock Switch = Lock & Unlock

    • If not the specified state 

      Test or replace the component: S13D Door Lock Switch - Driver

    • If the specified state 
  9. Ignition/Vehicle - Off
  10. Connect the electrical connector: S13P Door Lock Switch - Passenger
  11. Ignition - On/Vehicle - In Service Mode
  12. Operate the component: S13P Door Lock Switch - Passenger - Lock & Unlock

    Verify the scan tool parameter: Passenger Door Lock Switch = Lock & Unlock

    • If not the specified state 

      Test or replace the component: S13P Door Lock Switch - Passenger

    • If the specified state 
  13. All OK.