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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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