What is the test for ineffective counsel in a personal injury action?

We presume that counsel's conduct fell within the "wide range of reasonable professional assistance." (People v. Maury (2003) 30 Cal.4th 342, 389.) Our review is limited to the record on appeal and we must reject a claim of ineffective assistance "if the record sheds no light on why counsel acted or failed to act in the manner challenged unless (1) counsel was asked for and failed to provide a satisfactory explanation or (2) there simply could be no satisfactory explanation." (People v. Burgener (2003) 29 Cal.4th 833, 880.)