Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Inspection

Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual / Vehicle Interior / Seat / Front Seat Assembly / Inspection

INSPECTION

PROCEDURE

1. INSPECT FRONT SEAT ADJUSTER ASSEMBLY LH

(a) Check the operation of the slide motor.

(1) Check that the seat cushion moves smoothly when the battery is connected to the slide motor connector terminals.

OK:

w/ Memory

Battery Connection

Operational Direction

Battery positive (+) → Terminal 4

Battery negative (-) → Terminal 1

Seat cushion moves forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 4

Seat cushion moves backward
w/o Memory

Battery Connection

Operational Direction

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seat cushion moves forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seat cushion moves backward

If the result is not as specified, replace the front seat adjuster assembly LH.

*A

w/ Memory

*B

w/o Memory

*a

Component without harness connected

(Slide Motor (Front Seat Adjuster Assembly LH)

(b) Check the operation of the front vertical motor.

(1) Check that the seat cushion moves smoothly when the battery is connected to the front vertical motor connector terminals.

OK:

Battery Connection

Operational Direction

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seat cushion moves upward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seat cushion moves downward

If the result is not as specified, replace the front seat adjuster assembly LH.

*a

Component without harness connected

(Front Vertical Motor (Front Seat Adjuster Assembly LH)

(c) Check the operation of the lifter motor.

(1) Check that the seat cushion moves smoothly when the battery is connected to the lifter motor connector terminals.

OK:

Battery Connection

Operational Direction

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seat cushion moves upward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seat cushion moves downward

If the result is not as specified, replace the front seat adjuster assembly LH.

*a

Component without harness connected

(Lifter Motor (Front Seat Adjuster Assembly LH)

2. INSPECT FRONT SEATBACK FRAME SUB-ASSEMBLY LH

(a) Check the operation of the reclining motor.

(1) Check that the seatback moves smoothly when the battery is connected to the reclining motor connector terminals.

OK:

Battery Connection

Operational Direction

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seatback moves forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seatback moves backward

If the result is not as specified, replace the front seatback frame sub-assembly LH.

*a

Component without harness connected

(Reclining Motor (Front Seatback Frame Sub-assembly LH))

3. INSTALL FRONT SEAT VERTICAL ADJUSTER ASSEMBLY LH

(a) Check the operation of the cushion length motor.

(1) Check that the seatback moves smoothly when the battery is connected to the cushion length motor connector terminals.

OK:

Battery Connection

Operational Direction

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seat cushion moves forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seat cushion moves backward

If the result is not as specified, replace the front seat vertical adjuster assembly LH.

*a

Component without harness connected

(Cushion Length Motor (Front Seat Vertical Adjuster Assembly LH))

4. INSPECT FRONT SEAT ADJUSTER ASSEMBLY RH

(a) Check the operation of the slide motor.

(1) Check that the front seat cushion moves smoothly when the battery is connected to the slide motor connector terminals.

OK:

Battery Connection

Operational Direction

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seat cushion moves forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seat cushion moves backward

If the result is not as specified, replace the front seat adjuster assembly RH.

*a

Component without harness connected

(Slide Motor (Front Seat Adjuster Assembly RH))

(b) Check the operation of the front vertical motor.

(1) Check that the seat cushion moves smoothly when the battery is connected to the front vertical motor connector terminals.

OK:

Battery Connection

Operational Direction

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seat cushion moves upward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seat cushion moves downward

If the result is not as specified, replace the front seat adjuster assembly RH.

*a

Component without harness connected

(Front Vertical Motor (Front Seat Adjuster Assembly RH)

(c) Check the operation of the lifter motor.

(1) Check that the seat cushion moves smoothly when the battery is connected to the lifter motor connector terminals.

OK:

Battery Connection

Operational Direction

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seat cushion moves upward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seat cushion moves downward

If the result is not as specified, replace the front seat adjuster assembly RH.

*a

Component without harness connected

(Lifter Motor (Front Seat Adjuster Assembly RH)

5. INSPECT FRONT SEATBACK FRAME SUB-ASSEMBLY RH

(a) Check the operation of the reclining motor.

(1) Check that the front seatback moves smoothly when the battery is connected to the reclining motor connector terminals.

OK:

Battery Connection

Operational Direction

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seatback moves forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seatback moves backward

If the result is not as specified, replace the front seatback frame sub-assembly RH.

*a

Component without harness connected

(Reclining Motor (Front Seatback Frame Sub-assembly RH))

6. INSTALL FRONT SEAT VERTICAL ADJUSTER ASSEMBLY RH

(a) Check the operation of the cushion length motor.

(1) Check that the seatback moves smoothly when the battery is connected to the cushion length motor connector terminals.

OK:

Battery Connection

Operational Direction

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seat cushion moves forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seat cushion moves backward

If the result is not as specified, replace the front seat vertical adjuster assembly RH.

*a

Component without harness connected

(Cushion Length Motor (Front Seat Vertical Adjuster Assembly RH))
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