Rear Height Will Not Go Up &/Or Down (Other Functions Operate Normally)

1) At inoperative seat, use test light to backprobe between seat adjuster switch connector C2 terminal "A" (Yellow/White wire) and battery voltage. If test light glows, go to next step. If test light does not glow, replace seat adjuster switch.

2) Backprobe between seat adjuster switch connector C2 terminal "B" (Red/White wire) and battery voltage. If test light glows, go to next step. If test light does not glow, replace seat adjuster switch.

3) Backprobe between seat adjuster switch connector C2 terminal "A" (Yellow/White wire) and ground. Move rear height switch to up position. If test light glows, go to next step. If test light does not glow, replace seat adjuster switch.

4) Backprobe between seat adjuster switch connector C2 terminal "B" (Red/White wire) and ground. Move rear height switch to down position. If test light glows, go to next step. If test light does not glow, replace seat adjuster switch.

5) Check for open in Yellow/White or Red/White wire between seat adjuster switch and rear height motor. If circuits are okay, replace rear height motor.