One Mirror Does Not Operate In Left/Right Positions: (Roadmaster)
- On left mirror, backprobe with test light between power mirror switch connector terminals "B" (Light Blue wire) and "D" (White wire). On right mirror, backprobe with test light between power mirror switch connector terminals "G" (Red/White wire) and "B" (Light Blue wire). Move power mirror switch to left position. If test light glows, go to next step. If test light does not glow, check for poor connections at power mirror switch. If connections are okay, replace power mirror switch.
- On left mirror, backprobe with test light between left power mirror connector terminals "B" (White wire) and "A" (Light Blue wire). On right mirror, backprobe with test light between right power mirror connector terminals "B" (Red/White wire) and "A" (Light Blue wire). Move power mirror switch to left position. If test light glows, check for poor connections at inoperative power mirror connector. If connections are okay, replace power mirror drive unit power pack. If test light does not glow, repair open in White, Red/White or Light Blue wire between power mirror switch and inoperative power mirror.