Power Seat Switch: Description and Operation
LUMBAR SWITCHBattery positive voltage (B+) is supplied at all times to the driver and passenger seat lumbar switches from the PWR SEAT Circuit Breaker located in the rear fuse block. Battery positive voltage (B+) is supplied at all times to the LR and RR passenger lumbar switches from the RR LUM/ANT Fuse located in the rear fuse block. All four lumbar switches are grounded through the switch ground circuits and G 302. The lumbar switches provide both power and ground to the selected lumbar motors.
Battery positive voltage is supplied at all times to the lumbar switch from the MEM Fuse located in the rear fuse block. When the lumbar switches are pressed they send a 12 V signal to the MSM. The MSM commands the lumbar motors to move in response to the switch signals.