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Circuit/System Verification

WARNING: This page is about a different car, the 2012 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that DTC P0A2C is not set.
  2. Vehicle ON, observe the scan tool ECM engine coolant temperature (ECT) and Transmission Fluid Temperature parameters in freeze frame data. The readings should be below 125°C (257°F).
    • If the ECT was above 125°C (257°F) when the DTC set, go to Engine Overheating and correct that concern first.
  3. Vehicle ON, observe the scan tool motor 1 temperature and motor 2 temperature parameters in freeze frame data. The reading should be above 200°C (392°F). If greater than the specified value, refer to Automatic Transmission Overheating . If the transmission tests normal, replace M15A drive motor 1 generator.
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