Test 11: All Lumbar Functions Inoperative
NOTE:
This diagnostic procedure is for vehicles with lumbar support in both front seats. After repairs, perform lumbar support system check. See SYSTEM CHECKS
under TROUBLE SHOOTING. For vehicles with memory seat functions, see appropriate wiring diagram in MEMORY SYSTEMS article.
- Using test light connected to ground, backprobe lumbar switch connector terminal "E" (Orange wire). See Fig 1 . If test light comes on, go to next step. If test light does not come on, go to step 5 .
- Check for open in Red wire between splice S311 and splice 352. See WIRING DIAGRAMS . If circuit is okay, go to next step. If circuit is not okay, go to step 6 .
- Check for open in Black wire between splice S313 and splice 351. See WIRING DIAGRAMS . If circuit is okay, go to next step. If circuit is not okay, go to step 6 .
- Replace lumbar switch. See POWER SWITCHES under REMOVAL & INSTALLATION.
- Repair open in Orange wire between lumbar switch connector terminal "E" and splice S330. See WIRING DIAGRAMS .
- Repair suspect wiring as necessary.