Toyota CH-R Service Manual: Inspection




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

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


Battery Connection

Operational Direction

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 2

Seatback moves forward

Battery positive (+) → Terminal 2

Battery negative (-) → Terminal 1

Seatback moves backward

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


Component without harness connected

(Lumbar Support Adjuster Assembly)

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