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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 >> Component Testing
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Component Testing

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.

Driver Door Lock Switch

  1. Ignition OFF, disconnect the harness connector at the S13D Door Lock Switch-Driver.
  2. Test for infinite resistance between the signal terminal D and the ground terminal B with the switch in the open position.
    • If less than infinite resistance 

      Replace the S13D Door Lock Switch-Driver.

    • If infinite resistance 
  3. Test for infinite resistance between the signal terminal E and the ground terminal B with the switch in the open position.
    • If less than infinite resistance 

      Replace the S13D Door Lock Switch-Driver

    • If infinite resistance 
  4. Test for less than 2 Ω between the signal terminal D and the ground terminal B with the switch in the Lock position.
    • If 2 Ω or greater 

      Replace the S13D Door Lock Switch-Driver.

    • If less than 2 Ω 
  5. Test for less than 2 Ω between the signal terminal E and the ground terminal B with the switch in the Unlock position.
    • If 2 Ω or greater 

      Replace the S13D Door Lock Switch-Driver.

    • If less than 2 Ω 
  6. All OK

Passenger Door Lock Switch

  1. Ignition OFF, disconnect the harness connector at the S13P Door Lock Switch-Passenger.
  2. Test for infinite resistance between the signal terminal D and the ground terminal B with the switch in the open position.
    • If less than infinite resistance 

      Replace the S13P Door Lock Switch-Passenger.

    • If infinite resistance 
  3. Test for infinite resistance between the signal terminal E and the ground terminal B with the switch in the open position.
    • If less than infinite resistance 

      Replace the S13P Door Lock Switch-Passenger

    • If infinite resistance 
  4. Test for less than 2 Ω between the signal terminal E and the ground terminal B with the switch in the Lock position.
    • If 2 Ω or greater 

      Replace the S13P Door Lock Switch-Passenger.

    • If less than 2 Ω 
  5. Test for less than 2 Ω between the signal terminal D and the ground terminal B with the switch in the Unlock position.
    • If 2 Ω or greater 

      Replace the S13P Door Lock Switch-Passenger.

    • If less than 2 Ω 
  6. All OK
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