Test C: One Mirror Does Not Operate Left & Right
Remove power mirror trim panel of inoperative mirror. Disconnect mirror motor connector. Connect a test light between terminals "A" and "B" of mirror motor connector. See Figure . Select inoperative mirror with mirror select switch. Move mirror adjustment switch to right position, then to left position. If test light is on, replace inoperative mirror motor. See POWER MIRROR MOTOR under REMOVAL & INSTALLATION. If test light is off, check Red/White wire (left mirror) or White wire (right mirror) for open or poor connections. If wire is good, replace power mirror switch. See POWER MIRROR SWITCH under REMOVAL & INSTALLATION.