Toyota Tundra Service Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY LH (w/ Seat Position Memory System)

(a) Check the operation of the lumbar support adjuster assembly LH.

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

OK:

Tester Connection

Switch Condition

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Hold

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Release

If the result is not as specified, replace the lumbar support adjuster assembly LH.

Text in Illustration

*a

Component without wire harness connected

(Lumbar Support Adjuster Assembly LH)

2. INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY LH (w/o Seat Position Memory System)

(a) Check the operation of the lumbar support adjuster assembly LH.

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

OK:

Tester Connection

Switch Condition

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Hold

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Release

If the result is not as specified, replace the lumbar support adjuster assembly LH.

Text in Illustration

*a

Component without wire harness connected

(Lumbar Support Adjuster Assembly LH)

3. INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY RH

(a) Check the operation of the lumbar support adjuster assembly RH.

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

OK:

Tester Connection

Switch Condition

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Hold

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Release

If the result is not as specified, replace the lumbar support adjuster assembly RH.

Text in Illustration

*a

Component without wire harness connected

(Lumbar Support Adjuster Assembly RH)

    Components

    Installation

    See More:

    Toyota Tundra Service Manual > Power Mirror Control System(w/ Memory): Data List / Active Test
    DATA LIST / ACTIVE TEST 1. READ DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals ma ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2025 Copyright www.ttundra.com
    0.0342