Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON
Engine running, accessories OFF
Test for 12.6 - 15.0 V between the battery positive terminal and negative terminal.
- If not within 12.6 - 15.0 V
  Refer to Charging System Test .
- Go to next step: If within 12.6 - 15.0 V
Verify the scan tool BCM Battery Voltage parameter is within a value of 2 V of the battery terminal voltage.
- If not within a value of 2 V
  Refer to Circuit/System Testing below..
- Go to next step: If within a value of 2 V
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify the DTC does not set.
- If the DTC sets
  Refer to Circuit/System Testing below..
- Go to next step: If the DTC does not set
All OK.