Front Power Seat Control System: Inspection

WARNING: This page is about a different car, the 2005 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: Identifying Front Power Seat Switch LH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard: Slide switch

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

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

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

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: Identifying Front Power Seat Switch RH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard: Slide switch

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

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: Identifying Power Seat Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

TESTER CONNECTION SPECIFIED CONDITION

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

Check operation of the slide motor.

Check if the motor rotates smoothly when the battery is connected to the slide motor connector terminals.

Fig 4: Identifying Slide Motor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

MEASUREMENT CONDITION (1 OF 5)

Measurement Condition	Operational Direction
Battery positive (+) --> 2 Battery negative (-) --> 1	Clockwise
Battery positive (+) --> 1 Battery negative (-) --> 2	Counterclockwise

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

Only on the driver side:

Check operation of the vertical motor.

Check if the motor rotates smoothly when the battery is connected to the vertical motor connector terminals.

Fig 5: Identifying Front Vertical Motor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

MEASUREMENT CONDITION (2 OF 5)

Measurement Condition	Operational Direction
Battery positive (+) --> 2 Battery negative (-) --> 1	Clockwise
Battery positive (+) --> 1 Battery negative (-) --> 2	Counterclockwise

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

Only on the driver side:

Check operation of the rear vertical motor.

Check if the motor rotates smoothly when the battery is connected to the rear vertical motor connector terminals.

Fig 6: Identifying Rear Vertical Motor

Standard:

MEASUREMENT CONDITION (3 OF 5)

Measurement Condition	Operational Direction
Battery positive (+) --> 2 Battery negative (-) --> 1	Clockwise
Battery positive (+) --> 1 Battery negative (-) --> 2	Counterclockwise

If the result is not as specified, replace the rear vertical motor.

Check operation of the reclining motor.

Check if the motor rotates smoothly when the battery is connected to the reclining motor connector terminals.

Fig 7: Identifying Reclining Motor

Standard:

MEASUREMENT CONDITION (4 OF 5)

Measurement Condition	Operational Direction
Battery positive (+) --> 2 Battery negative (-) --> 1	Clockwise
Battery positive (+) --> 1 Battery negative (-) --> 2	Counterclockwise

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

INSPECT LUMBAR SUPPORT ADJUSTER ASSY

Only on the driver side:

Check operation of the lumbar support adjuster motor.

Check if the motor rotates smoothly when the battery is connected to the lumbar support adjuster motor connector terminals.

Fig 8: Identifying Lumbar Support Adjuster Motor

Standard:

MEASUREMENT CONDITION (5 OF 5)

Measurement Condition	Operational Direction
Battery positive (+) --> 1 Battery negative (-) --> 2	Clockwise
Battery positive (+) --> 2 Battery negative (-) --> 1	Counterclockwise

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