Some Motors Do Not Operate (Without Memory Function)

1. Disconnect the power seat switch connector.
2. Measure the resistance between connector terminals when moving the switch to slide forward and slide backward. Ref. to SEATS>Power Seat System>INSPECTION>CHECK POWER SEAT SWITCH .

Is the inspection result normal?

Yes:  Go to  2

No:  Replace the power seat switch assembly.

1. Disconnect the slide motor connector.
2. Measure the resistance between power seat switch connector and slide motor connector.

   Connector & terminal 

   Driver's seat

   (R202) No. 5 - (R200) No. 8:

   (R202) No. 1 - (R200) No. 7:

   Passenger's seat

   (R192) No. 5 - (R190) No. 8:

   (R192) No. 1 - (R190) No. 7:

Is the resistance less than 10 Ω?

Yes:  Go to  3

No:  Check power seat harness.

1. Connect the power seat switch connector and slide motor connector.
2. Apply 12 V to the slide motor and check the motor rotation.

   Connector & terminal 

   Driver's seat

   (R202) No. 5 (+) - (R202) No. 1 (-):

   (R202) No. 1 (+) - (R202) No. 5 (-):

   Passenger's seat

   (R192) No. 5 (+) - (R192) No. 1 (-):

   (R192) No. 1 (+) - (R192) No. 5 (-):

Does the motor rotate normally?

Yes:  Check for temporary poor contact or mechanical trouble in slide rail.

No:  Slide motor problem. Replace the seat cushion frame assembly.

1. Disconnect the power seat switch connector.
2. Measure the resistance between connector terminals when moving the switch to tilt up and tilt down. Ref. to SEATS>Power Seat System>INSPECTION>CHECK POWER SEAT SWITCH .

Is the inspection result normal?

Yes:  Go to  2

No:  Replace the power seat switch assembly.

1. Disconnect the tilt motor connector.
2. Measure the resistance between power seat switch connector and tilt motor connector.

   Connector & terminal 

   Driver's seat

   (R203) No. 4 - (R200) No. 2:

   (R203) No. 6 - (R200) No. 3:

Is the resistance less than 10 Ω?

Yes:  Go to  3

No:  Check power seat harness.

1. Connect the power seat switch connector and tilt motor connector.
2. Apply 12 V to the tilt motor and check the motor rotation.

   Connector & terminal 

   Driver's seat

   (R203) No. 4 (+) - (R203) No. 6 (-):

   (R203) No. 6 (+) - (R203) No. 4 (-):

Does the motor rotate normally?

Yes:  Check for temporary poor contact or mechanical trouble in tilt mechanism.

No:  Tilt motor problem. Replace the seat cushion frame assembly.

1. Disconnect the power seat switch connector.
2. Measure the resistance between connector terminals when moving the switch to lifter up and lifter down. Ref. to SEATS>Power Seat System>INSPECTION>CHECK POWER SEAT SWITCH .

Is the inspection result normal?

Yes:  Go to  2

No:  Replace the power seat switch assembly.

1. Disconnect the lifter motor connector.
2. Measure the resistance between power seat switch connector and lifter motor connector.

   Connector & terminal 

   Driver's seat

   (R204) No. 6 - (R200) No. 6:

   (R204) No. 4 - (R200) No. 9:

Is the resistance less than 10 Ω?

Yes:  Go to  3

No:  Check power seat harness.

1. Connect the power seat switch connector and lifter motor connector.
2. Apply 12 V to the lifter motor and check the motor rotation.

   Connector & terminal 

   Driver's seat

   (R204) No. 6 (+) - (R204) No. 4 (-):

   (R204) No. 4 (+) - (R204) No. 6 (-):

Does the motor rotate normally?

Yes:  Check for temporary poor contact or mechanical trouble in lifter mechanism.

No:  Lifter motor problem. Replace the seat cushion frame assembly.

1. Disconnect the power seat switch connector.
2. Measure the resistance between connector terminals when moving the switch to reclining forward and reclining backward. Ref. to SEATS>Power Seat System>INSPECTION>CHECK POWER SEAT SWITCH .

Is the inspection result normal?

Yes:  Go to  2

No:  Replace the power seat switch assembly.

1. Disconnect the reclining motor connector.
2. Measure the resistance between power seat switch connector and reclining motor connector.

   Connector & terminal 

   Driver's seat

   (R201) No. 6 - (R200) No. 10:

   (R201) No. 4 - (R200) No. 5:

   Passenger's seat

   (R191) No. 6 - (R190) No. 10:

   (R191) No. 4 - (R190) No. 5:

Is the resistance less than 10 Ω?

Yes:  Go to  3

No:  Check power seat harness.

1. Connect the power seat switch connector and reclining motor connector.
2. Apply 12 V to the reclining motor and check the motor rotation.

   Connector & terminal 

   Driver's seat

   (R201) No. 6 (+) - (R201) No. 4 (-):

   (R201) No. 4 (+) - (R201) No. 6 (-):

   Passenger's seat

   (R191) No. 6 (+) - (R191) No. 4 (-):

   (R191) No. 4 (+) - (R191) No. 6 (-):

Does the motor rotate normally?

Yes:  Check for temporary poor contact or mechanical trouble in reclining hinge.

No:  Reclining motor problem. Replace the backrest frame assembly.

1. Disconnect the lumbar switch connector.
2. Measure the resistance between connector terminals when moving the switch to lumbar forward and lumbar backward. Ref. to SEATS>Power Seat System>INSPECTION>CHECK LUMBAR SWITCH .

Is the inspection result normal?

Yes:  Go to  2

No:  Replace the lumbar switch assembly.

1. Disconnect the lumbar motor connector.
2. Measure the resistance between lumbar switch connector and lumbar motor connector.

   Connector & terminal 

   Driver's seat

   (R198) No. 1 - (R195) No. 4:

   (R198) No. 2 - (R195) No. 3:

Is the resistance less than 10 Ω?

Yes:  Go to  3

No:  Check power seat harness.

1. Connect the lumbar switch connector and lumbar motor connector.
2. Apply 12 V to the lumbar motor and check the motor rotation.

   Connector & terminal 

   Driver's seat

   (R198) No. 1 (+) - (R198) No. 2 (-):

   (R198) No. 2 (+) - (R198) No. 1 (-):

Does the motor rotate normally?

Yes:  Check for temporary poor contact or mechanical trouble in lumbar mechanism.

No:  Lumbar motor problem. Replace the backrest frame assembly.