Left Lumbar Support Does Not Move Manually In One Direction
NOTE:
After repair or component replacement is completed, perform POWER SEAT/MIRROR MEMORY SYSTEM CHECK under TROUBLE SHOOTING to verify system is functioning properly.
- Perform POWER SEAT/MIRROR MEMORY SYSTEM CHECK under TROUBLE SHOOTING. Go to next step.
- Operate left lumbar switch in inoperative position. Using test light, backprobe between lumbar switch connector terminal "E" (Black wire) and inoperative terminal as follows:
- Lumbar in - terminal "B" (Dark Blue wire).
- Lumbar out - terminal "C" (Yellow wire).
- Lumbar down - terminal "A" (Yellow/Black wire).
- Lumbar up - terminal "F" (White wire).
If test light illuminates, go to next step. If test light does not illuminate, go to step 4).
- Check for open in appropriate wire. Repair as necessary. See WIRING DIAGRAMS . If circuits are okay, go to step 5).
- Replace left lumbar switch.
- Disconnect inoperative lumbar motor connector. Connect fused jumper (20-amp) between battery voltage and either lumbar connector terminal. Connect second fused jumper (20-amp) between ground and other lumbar connector terminal. If motor operates, go to next step. If motor does not operate, replace lumbar motor.
- Repair open or short to ground in Pink, Dark Blue, Purple or Tan wire between left lumbar motor and memory Seat Module (MSM). See WIRING DIAGRAMS .