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Circuit/System Verification

WARNING: This page is about a different car, the 2008 Pontiac G8. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine running measure and record the voltage at the battery terminals. Verify that the battery voltage is 12.6-15.5 V
  2. Engine running, observe the scan tool EBCM Battery Voltage Signal parameter. The reading should be between 12.6 and 15.5 V
    • If not within the specified range, replace the EBCM.
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