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Home › Buick › 2018 › Enclave Base › Repair and Diagnosis › Transmission › Automatic Trans › Electronic Transmission Range Select › Diagnostic Information and Procedures › DTC B2A00 › Component Testing

Component Testing

  1. Ignition OFF, disconnect the harness connector at the A23D Door Latch Assembly-Driver.
  2. Test for infinite resistance between the signal terminal and ground terminal listed below with the switch in the open position.
    • Signal terminal 2 and ground terminal 3 (LHD)
    • Signal terminal 4 and ground terminal 3 (RHD)
    • If less than infinite resistance 

      Replace the A23D Door Latch Assembly-Driver.

    • Go to next step: If infinite resistance 
  3. Test for less than 5 Ω between the signal terminal and ground terminal listed below with the switch in the closed position.
    • Signal terminal 2 and ground terminal 3 (LHD)
    • Signal terminal 4 and ground terminal 3 (RHD)
    • If 5 Ω or greater 

      Replace the A23D Door Latch Assembly-Driver.

    • Go to next step: If less than 5 Ω 
  4. All OK
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