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Home >> Buick >> 2012 >> LaCrosse Hybrid >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid/EV Control System >> Diagnostic Information and Procedures >> DTC P0B09 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the auxiliary transmission fluid pump relay turns on and off/clicks when commanding the auxiliary transmission fluid pump relay ON and OFF with a scan tool.
    • If the relay does not click 

      Refer to Circuit/System Testing below.

    • If the relay clicks 

      All OK.

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