Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: 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 auxiliary battery is connected to the slide motor connector terminals.

OK:

Auxiliary Battery Connection

Operational Direction

Auxiliary battery positive (+) → Terminal 4

Auxiliary battery negative (-) → Terminal 3

Seat cushion moves forward

Auxiliary battery positive (+) → Terminal 3

Auxiliary battery negative (-) → Terminal 4

Seat cushion moves backward

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

*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 auxiliary battery is connected to the front vertical motor connector terminals.

OK:

Auxiliary Battery Connection

Operational Direction

Auxiliary battery positive (+) → Terminal 3

Auxiliary battery negative (-) → Terminal 1

Seat cushion moves upward

Auxiliary battery positive (+) → Terminal 1

Auxiliary battery negative (-) → Terminal 3

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 auxiliary battery is connected to the lifter motor connector terminals.

OK:

Auxiliary Battery Connection

Operational Direction

Auxiliary battery positive (+) → Terminal 3

Auxiliary battery negative (-) → Terminal 1

Seat cushion moves upward

Auxiliary battery positive (+) → Terminal 1

Auxiliary battery negative (-) → Terminal 3

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 auxiliary battery is connected to the reclining motor connector terminals.

OK:

Auxiliary Battery Connection

Operational Direction

Auxiliary battery positive (+) → Terminal 3

Auxiliary battery negative (-) → Terminal 1

Seatback moves forward

Auxiliary battery positive (+) → Terminal 1

Auxiliary battery negative (-) → Terminal 3

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. INSPECT FRONT SEAT ADJUSTER ASSEMBLY RH

(a) Check the operation of the slide motor.

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

OK:

Auxiliary Battery Connection

Operational Direction

Auxiliary battery positive (+) → Terminal 3

Auxiliary battery negative (-) → Terminal 4

Seat cushion moves forward

Auxiliary battery positive (+) → Terminal 4

Auxiliary battery negative (-) → Terminal 3

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 auxiliary battery is connected to the front vertical motor connector terminals.

OK:

Auxiliary Battery Connection

Operational Direction

Auxiliary battery positive (+) → Terminal 1

Auxiliary battery negative (-) → Terminal 3

Seat cushion moves upward

Auxiliary battery positive (+) → Terminal 3

Auxiliary battery negative (-) → Terminal 1

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 auxiliary battery is connected to the lifter motor connector terminals.

OK:

Auxiliary Battery Connection

Operational Direction

Auxiliary battery positive (+) → Terminal 3

Auxiliary battery negative (-) → Terminal 1

Seat cushion moves upward

Auxiliary battery positive (+) → Terminal 1

Auxiliary battery negative (-) → Terminal 3

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))

4. INSPECT FRONT SEATBACK FRAME SUB-ASSEMBLY RH

(a) Check the operation of the reclining motor.

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

OK:

Auxiliary Battery Connection

Operational Direction

Auxiliary battery positive (+) → Terminal 3

Auxiliary battery negative (-) → Terminal 1

Seatback moves forward

Auxiliary battery positive (+) → Terminal 1

Auxiliary battery negative (-) → Terminal 3

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))

    Disassembly

    Installation

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Telematics System(for Gasoline Model): Lost Communication with Body Control Module "B" (U0142,U0155,U0163)
    DESCRIPTION These DTCs are stored when a malfunction occurs in the CAN communication circuit. HINT: If CAN communication system DTCs are stored, they may also be stored for other systems. DTC No. Detection Item DTC Detection Condition Trouble Area U0142 Lost Communication with Body Control Module "B ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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