WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic table.
3. Tests the pump motor circuits of the BPMV for a short to the housing of the BPMV.