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

1) Using test light, backprobe between Yellow wire terminal at inoperative seat adjuster motor assembly connector C1 and ground. Move power seat switch to rear height up position. If test light glows, go to next step. If test light does not glow, check for poor connection or open in Yellow wire. If circuit is okay, replace power seat switch.

2) Backprobe between Light Blue wire terminal at inoperative seat adjuster motor assembly connector C1 and ground. Move power seat switch to rear height down position. If test light glows, go to next step. If test light does not glow, check for poor connection or open in Light Blue wire. If circuit is okay, replace power seat switch.

3) Backprobe between Yellow and Light Blue wire terminals at inoperative seat adjuster motor assembly connector C1. Move power seat switch to rear height down, then rear height up positions. If test light glows in both positions, check for poor connections at rear height motor. If connections are okay, replace rear height motor. If test light does not glow in both positions, replace power seat switch.