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Circuit/System Verification

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that no hybrid powertrain control module (HPCM) DTCs are set due to high battery voltage.
  2. Engine running, observe the scan tool ACCM High Battery Voltage parameter. The reading should be between 225 V and 380 V.
    • If greater than the specified range, replace the ACCM.
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