Left Power Mirror Does Not Operate In Left/Right Positions

Disconnect left power mirror connector. Connect test light between left power mirror harness connector terminal "B" (Yellow wire) and ground. Move power mirror switch to right position. If test light illuminates, go to next step. If test light does not illuminate, check for open in Yellow wire between left power mirror and power mirror switch. If circuit is okay, replace power mirror switch.
Connect test light between left power mirror harness connector terminal "A" (Light Blue wire) and ground. Move power mirror switch to left position. If test light illuminates, replace left power mirror. If test light does not illuminate, check for open in Light Blue wire between left power mirror and power mirror switch. If circuit is okay, replace power mirror switch.