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

Parts Location

PARTS LOCATION

ILLUSTRATION

*1

INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - P/SEAT FUSE

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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

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	-