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Home >> Buick >> 2018 >> Enclave Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC B3140, B3145, B3150, or B3155: Unlock Switch Circuit, Lock Switch Circuit >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia Limited, 2017 Chevrolet Traverse, and 2017 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the scan tool Driver Door Lock Sw. parameter changes from Inactive to Active when pushing the appropriate switch on the S13D Door Lock Switch-Driver.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Driver Door Lock Switch Malfunction.

    • If the parameter changes 
  3. Verify the scan tool Driver Door Unlock Sw. parameter changes from Inactive to Active when pushing the appropriate switch on the S13D Door Lock Switch-Driver.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Driver Door Lock Switch Malfunction.

    • If the parameter changes 
  4. Verify the scan tool Psgr. Door Lock Sw. parameter changes from Inactive to Active when pushing the appropriate switch on the S13P Door Lock Switch-Passenger.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Passenger Door Lock Switch Malfunction.

    • If the parameter changes 
  5. Verify the scan tool Psgr. Door Unlock Sw. parameter changes from Inactive to Active when pushing the appropriate switch on the S13P Door Lock Switch-Passenger.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Passenger Door Lock Switch Malfunction.

    • If the parameter changes 
  6. All OK.
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