Toyota Tundra Service Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT FRONT SEATBACK FRAME SUB-ASSEMBLY LH (w/o Seat Position Memory System)

(a) Check the operation of the reclining motor LH.

(1) Apply battery voltage to the reclining motor LH connector, and check that the reclining motor LH operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Backward

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

Text in Illustration

*1

Terminal 1

*2

Terminal 2

*a

Component without wire harness connected

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

2. INSPECT FRONT SEATBACK FRAME SUB-ASSEMBLY LH (w/ Seat Position Memory System)

(a) Check the operation of the reclining motor LH.

(1) Apply battery voltage to the reclining motor LH connector, and check that the reclining motor LH operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Backward

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

Text in Illustration

*1

Terminal 1

*2

Terminal 2

*a

Component without wire harness connected

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

3. INSPECT FRONT SEAT CUSHION FRAME SUB-ASSEMBLY LH (w/o Seat Position Memory System)

(a) Check the operation of the slide motor LH.

(1) Apply battery voltage to the slide motor LH connector, and check that the slide motor LH operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 4

Battery negative (-) → Terminal 3

Forward

Battery positive (+) → Terminal 3

Battery negative (-) → Terminal 4

Backward

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

Text in Illustration

*a

Component without wire harness connected

(Front Seat Cushion Frame Sub-assembly LH (Slide Motor LH))

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

(1) Apply battery voltage to the front vertical motor LH connector, and check that the front vertical motor LH operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Upward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Downward

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

Text in Illustration

*1

Terminal 1

*2

Terminal 2

*a

Component without wire harness connected

(Front Seat Cushion Frame Sub-assembly LH (Front Vertical Motor LH))

(c) Check the operation of the lifter motor LH.

(1) Apply battery voltage to the lifter motor LH connector, and check that the lifter motor LH operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Upward

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Downward

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

Text in Illustration

*a

Component without wire harness connected

(Front Seat Cushion Frame Sub-assembly LH (Lifter Motor LH))

4. INSPECT FRONT SEAT CUSHION FRAME SUB-ASSEMBLY LH (w/ Seat Position Memory System)

(a) Check the operation of the slide motor LH.

(1) Apply battery voltage to the slide motor LH connector, and check that the slide motor LH operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 4

Battery negative (-) → Terminal 3

Forward

Battery positive (+) → Terminal 3

Battery negative (-) → Terminal 4

Backward

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

Text in Illustration

*a

Component without wire harness connected

(Front Seat Cushion Frame Sub-assembly LH (Slide Motor LH))

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

(1) Apply battery voltage to the front vertical motor LH connector, and check that the front vertical motor LH operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Upward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Downward

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

Text in Illustration

*1

Terminal 1

*2

Terminal 2

*a

Component without wire harness connected

(Front Seat Cushion Frame Sub-assembly LH (Front Vertical Motor LH))

(c) Check the operation of the lifter motor LH.

(1) Apply battery voltage to the lifter motor LH connector, and check that the lifter motor LH operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Upward

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Downward

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

Text in Illustration

*a

Component without wire harness connected

(Front Seat Cushion Frame Sub-assembly LH (Lifter Motor LH))

5. INSPECT FRONT SEAT CUSHION PANEL SUB-ASSEMBLY (w/ Leg Support Adjustment Switch)

(a) Check the operation of the leg support adjustment motor.

(1) Apply battery voltage to the leg support adjustment motor connector, and check that the leg support adjustment motor operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Backward

If the result is not as specified, replace the front seat cushion panel sub-assembly.

Text in Illustration

*a

Component without wire harness connected

(Front Seat Cushion Panel Sub-assembly (Leg Support Adjustment Motor))

6. INSPECT FRONT SEATBACK FRAME SUB-ASSEMBLY RH

(a) Check the operation of the reclining motor RH.

(1) Apply battery voltage to the reclining motor RH connector, and check that the reclining motor RH operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Forward

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Backward

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

Text in Illustration

*1

Terminal 1

*2

Terminal 2

*a

Component without wire harness connected

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

7. INSPECT FRONT SEAT CUSHION FRAME SUB-ASSEMBLY RH

(a) Check the operation of the slide motor RH.

(1) Apply battery voltage to the slide motor RH connector, and check that the slide motor RH operates smoothly as follows.

OK:

Condition

Switch Condition

Battery positive (+) → Terminal 4

Battery negative (-) → Terminal 3

Forward

Battery positive (+) → Terminal 3

Battery negative (-) → Terminal 4

Backward

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

Text in Illustration

*a

Component without wire harness connected

(Front Seat Cushion Frame Sub-assembly RH (Slide Motor RH))

    Components

    Installation

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