Front Power Seat Control System: Inspection

WARNING: This page is about a different car, the 2004 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT FRONT POWER SEAT SWITCH LH

Check the resistance between the terminals when each switch is operated.

Fig 1: Inspecting Front Power Seat Switch LH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

SLIDE SWITCH

Tester Connection	Switch Condition	Specified Condition
1-9	FRONT	Below 1 Ω
4-6	FRONT	Below 1 Ω
4-6	OFF	Below 1 Ω
4-9	OFF	Below 1 Ω
1-6	REAR	Below 1 Ω
4-9	REAR	Below 1 Ω

FRONT VERTICAL SWITCH

Tester Connection	Switch Condition	Specified Condition
1-10	UP	Below 1 Ω
4-5	UP	Below 1 Ω
4-5	OFF	Below 1 Ω
4-10	OFF	Below 1 Ω
1-5	DOWN	Below 1 Ω
4-10	DOWN	Below 1 Ω

REAR VERTICAL SWITCH

Tester Connection	Switch Condition	Specified Condition
1-7	UP	Below 1 Ω
4-8	UP	Below 1 Ω
4-7	OFF	Below 1 Ω
4-8	OFF	Below 1 Ω
1-8	DOWN	Below 1 Ω
4-7	DOWN	Below 1 Ω

RECLINING SWITCH

Tester Connection	Switch Condition	Specified Condition
1-3	FRONT	Below 1 Ω
2-4	FRONT	Below 1 Ω
2-4	OFF	Below 1 Ω
3-4	OFF	Below 1 Ω
1-2	REAR	Below 1 Ω
3-4	REAR	Below 1 Ω

If the result is not as specified, replace the switch.

INSPECT FRONT POWER SEAT SWITCH RH

Check the resistance between the terminals when each switch is operated.

Fig 2: Inspecting Front Power Seat Switch RH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

SLIDE SWITCH

Tester Connection	Switch Condition	Specified Condition
1-9	FRONT	Below 1 Ω
4-6	FRONT	Below 1 Ω
4-6	OFF	Below 1 Ω
4-9	OFF	Below 1 Ω
1-6	REAR	Below 1 Ω
4-9	REAR	Below 1 Ω

RECLINING SWITCH

Tester Connection	Switch Condition	Specified Condition
1-3	FRONT	Below 1 Ω
2-4	FRONT	Below 1 Ω
2-4	OFF	Below 1 Ω
3-4	OFF	Below 1 Ω
1-2	REAR	Below 1 Ω
3-4	REAR	Below 1 Ω

If the result is not as specified, replace the switch.

INSPECT POWER SEAT SWITCH ASSY (LUMBAR SUPPORT)

Only on the driver side:

Check the resistance between the terminals when the switch is operated.

Fig 3: Inspecting Power Seat Switch Assy (Lumbar Support)

STANDARD

Tester Connection	Switch Condition	Specified Condition
1-2	HOLD	Below 1 Ω
3-4	HOLD	Below 1 Ω
1-2	OFF	Below 1 Ω
4-5	OFF	Below 1 Ω
1-3	RELEASE	Below 1 Ω
4-5	RELEASE	Below 1 Ω

If the result is not as specified, replace the switch assy.

INSPECT FRONT SEAT ADJUSTER ASSY
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.
    
    Fig 4: Checking Operation Of Slide Motor
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  Fig 5: Standard
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the slide motor.
2. Only on the driver side:
  Check operation of the vertical motor.
  1. Check if the motor rotates smoothly when the battery is connected to the vertical motor connector terminals.
    
    Fig 6: Checking Operation Of Vertical Motor (Front)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  Fig 7: Standard
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the vertical motor.
3. Only on the driver side:
  Check operation of the rear vertical motor.
  1. Check if the motor rotates smoothly when the battery is connected to the rear vertical motor connector terminals.
    
    Fig 8: Checking Operation Of Vertical Motor (Rear)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  Fig 9: Standard
  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.
    
    Fig 10: Checking Operation Of Reclining Motor
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  Fig 11: Standard
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the reclining motor.
INSPECT LUMBAR SUPPORT ADJUSTER ASSY
1. Only on the driver side:
  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.
    
    Fig 12: Inspecting Lumbar Support Adjuster Assy
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  Fig 13: Standard
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the adjuster motor.