Toyota CH-R Service Manual: Front Power Seat Control System

Toyota CH-R Service Manual / Seat / Front Power Seat Control System

Parts Location

PARTS LOCATION

ILLUSTRATION

*1

INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

- P/SEAT FUSE

-

-

ILLUSTRATION

*1

LUMBAR SUPPORT ADJUSTER ASSEMBLY LH

*2

FRONT LUMBAR POWER SEAT SWITCH

System Diagram

SYSTEM DIAGRAM

Operation Check

OPERATION CHECK

CHECK POWER SEAT FUNCTION

(a) Check the basic functions.

*a

Lumbar Support Adjustment Function

(1) Operate the front lumber power seat switch and check the lumbar support adjustment function operates properly:

CHECK LUMBAR SUPPORT ADJUSTMENT MOTOR

(a) Check the PTC operation inside the lumbar support adjustment motor.

NOTICE:

The inspection should be performed with the seat installed to the vehicle.

(1) Operate the front lumbar power seat switch and move the lumbar support to either the foremost or rearmost position. Keep the seat in that position for approximately 60 seconds.

(2) Operate the front lumbar power seat switch again and continue to try to move the lumbar support in the same direction as in the previous step. Measure the time until the current is shut off (motor operation sound stops).

Standard:

4 to 90 seconds

(3) After the current is shut off, release the front lumbar power seat switch and wait for approximately 60 seconds.

(4) Operate the front lumbar power seat switch and move the lumbar support in the opposite direction. Check that the motor operates.

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Front Power Seat Control System

Symptom

Suspected Area

Link

Lumbar support adjustment function does not operate

Front lumbar power seat switch

Lumbar support adjuster assembly LH

Wire harness or connector

-

    Seat
    ...

    Front Seat Assembly
    ...

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