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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 53 (Hybrid/EV Controls) >> Diagnostic Information and Procedures >> DTC P0AB9 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Vehicle ON. Operate the hood release to open the hood. Under normal operation, the engine should start and run.
  2. Verify the engine starts and runs for at least 20 seconds.
    • If the engine fails to start and run for at least 20 seconds 

      Diagnose the engine and transmission systems. Perform Line Pressure Check. Refer to Line Pressure Check .

    • Go to next step: If the engine starts and runs for at least 20 seconds 
  3. Verify DTC P0AB9 is not set.
    • If the DTC is set 
    1. Verify the T6 Power Inverter Module has the latest calibration in Calibration Information.
      • If the T6 Power Inverter Module does not have the latest calibration, program the T6 power inverter module.
      • If the T6 Power Inverter Module has the latest calibration, replace the T6 Power Inverter Module.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the T6 Power Inverter Module.
      • Go to next step: If the DTC does not set.
    3. All OK
    • Go to next step: If the DTC is not set 
  4. All OK
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