Left Power Mirror Does Not Move Left & Right

Connect test light between Light Blue and White wires at power mirror switch connector. Move power mirror switch left and right. If test light does not illuminate in one or both positions, replace power mirror switch. If test light illuminates in both positions, go to next step.
Connect test light between Light Blue and White wires at power mirror connector. Move power mirror switch to left and right. If test light does not illuminate, service and repair open circuit in Light Blue or White wires between power mirror switch connector and power mirror connector.