Test B: All Power Seat Functions Inoperative
- Perform PRELIMINARY CHECKS
and POWER SEATS SYSTEM CHECK
under TROUBLESHOOTING. Go to next step.
- Attempt to operate seat in all directions. If seat moves properly in all directions, check for intermittent and poor terminal contact. If seat does not move properly in all directions, go to next step.
- Using a test light connected to ground, backprobe power seat switch terminal "F" (Orange wire) or "A" (Orange wire) if equipped with power lumbar. See Fig 1
and Fig 2
. If test light illuminates, go to next step. If test light does not illuminate, repair poor connection or open in Orange wire between power seat switch and DEFOG/SEATS circuit breaker 12 (30-amp) in instrument panel fuse block. See WIRING DIAGRAMS
. Instrument panel fuse block is located on left end of instrument panel.
- Backprobe between power seat switch terminals "F" (Orange wire) and "C" (Black wire) or "A" (Orange wire) and "D" (Black wire) if equipped with power lumbar. If test light does not illuminate, repair open in Black wire between power seat switch and ground. See WIRING DIAGRAMS
. If test light illuminates, check for poor connections at power seat switch. If connections are okay, replace power seat switch. See POWER SEAT SWITCHES
under REMOVAL & INSTALLATION.
Courtesy of GENERAL MOTORS CORP.
Courtesy of GENERAL MOTORS CORP.