Front Power Seat Control System - Diagnosis: Inspection

Passenger's seat:
INSPECT POWER SEAT SWITCH
1. Measure the resistance between the terminals when each switch is operated.
  Standard:
  
  Slide switch
  
  Fig 1: Terminals Resistance Reference Chart (Slide Switch)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Front vertical switch
  
  Fig 2: Terminals Resistance Reference Chart (Front Vertical Switch)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Lifter switch
  
  Fig 3: Terminals Resistance Reference Chart (Lifter Switch)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Reclining switch
  
  Fig 4: Terminals Resistance Reference Chart (Reclining Switch)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 5: Inspecting Power Seat Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Headrest switch
  
  Fig 6: Terminals Resistance Reference Chart (Headrest Switch)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the switch.
INSPECT DRIVING POSITION MEMORY SWITCH
1. Measure the resistance between the terminals when the switch is operated.
  Standard:
  
  Fig 7: Terminals Resistance Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the switch.
  
  Fig 8: Inspecting Driving Position Memory Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Driver's seat:
INSPECT LUMBAR SUPPORT SWITCH
1. Measure the resistance between the terminals when the switch is operated.
  Standard:
  
  Upper side control
  
  Fig 9: Terminals Resistance Reference Chart (Upper Side Control)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 10: Inspecting Lumbar Support Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Lower side control
  
  Fig 11: Terminals Resistance Reference Chart (Lower Side Control)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the switch.
Passenger's seat:
INSPECT LUMBAR SUPPORT SWITCH
1. Measure the resistance between the terminals when the switch is operated.
  Standard:
  
  Fig 12: Terminals Resistance Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 13: Inspecting Lumbar Support Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the switch.
Driver's seat:
INSPECT POWER SEAT CUSHION SWITCH
1. Measure the resistance between the terminals when the switch is operated.
2. Remove the power seat cushion switch.
3. Measure the resistance.
  Standard:
  
  Fig 14: Terminals Resistance Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 15: Inspecting Power Seat Cushion Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the switch.
Passenger's seat:
INSPECT POWER SEAT SWITCH SUB
1. Measure the resistance between the terminals when the switch is operated.
  Standard:
  
  Reclining switch
  
  Fig 16: Terminals Resistance Reference Chart (Reclining Switch)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Slide switch
  
  Fig 17: Terminals Resistance Reference Chart (Slide Switch)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 18: Inspecting Power Seat Switch Sub
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the switch.
INSPECT POWER SEAT MOTOR
1. Check operation of the slide motor.
  1. Check if the motor rotates smoothly when the battery is connected to the slide motor connector terminals.
  OK: Go to next step.
  
  Fig 19: Measurement Condition Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 20: Inspecting Power Seat Motor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the slide motor.
2. Check operation of the vertical motor.
  1. Check if the motor rotates smoothly when the battery is connected to the vertical motor connector terminals.
  OK: Go to next step.
  
  Fig 21: Measurement Condition Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 22: Checking Vertical Motor Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the vertical motor.
3. Check operation of the lifter motor.
  1. Check if the motor rotates smoothly when the battery is connected to the lifter motor connector terminals.
  OK: Go to next step.
  
  Fig 23: Measurement Condition Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 24: Checking Lifter Motor Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the lifter motor.
4. Check operation of the reclining motor.
  1. Check if the motor rotates smoothly when the battery is connected to the reclining motor connector terminals.
  OK: Go to next step.
  
  Fig 25: Measurement Condition Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 26: Checking Reclining Motor Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the reclining motor.
5. Check operation of the cushion slide motor.
  1. Check if the motor rotates smoothly when the battery is connected to the cushion slide motor connector terminals.
  OK: Go to next step.
  
  Fig 27: Measurement Condition Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 28: Checking Cushion Slide Motor Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the cushion slide motor.
INSPECT POWER SEAT MOTOR (LUMBAR SUPPORT)
1. Check operation of the lumbar support adjuster motor.
  1. Check if the motor rotates smoothly when the battery is connected to the lumbar support adjuster motor connector terminals.
OK: Go to next step.

Fig 29: Measurement Condition Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 30: Inspecting Power Seat Motor (Lumbar Support)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, replace the adjuster motor.
INSPECT POWER SEAT MOTOR (HEADREST)
1. Check operation of the headrest motor.
  1. Check if the motor rotates smoothly when the battery is connected to the headrest motor connector terminals.
OK: Go to next step.

Fig 31: Measurement Condition Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 32: Inspecting Power Seat Motor (Headrest)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, replace the headrest motor.