Some Motors Do Not Operate

Slide operation failure
1. CHECK SWITCH.
  1. Disconnect the connector of power seat switch assembly.
  2. Measure the resistance between connector terminals when moving the switch to slide forward and slide backward. Refer 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.
2. CHECK HARNESS.
  1. Disconnect the power seat switch connector and slide motor connector.
  2. Measure the resistance between power seat switch connector and slide motor connector.
    Connector & terminal
    
    (R200) No. 8 - (R202) No. 5:
    
    (R200) No. 7 - (R202) No. 1:
    
    Is the resistance less than 10 Ω?
    
    Yes: Go to 3.
    
    No: Check power seat harness.
3. CHECK SLIDE MOTOR.
  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
    
    (R202) No. 5 (+) - (R202) No. 1 (-):
    
    (R202) No. 1 (+) - (R202) 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.

Malfunction of tilt operation
1. CHECK SWITCH.
  1. Disconnect the connector of power seat switch assembly.
    2. Measure the resistance between connector terminals when moving the switch to tilt up and tilt down. Refer 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.
2. CHECK HARNESS.
  1. Disconnect the power seat switch connector and tilt motor connector.
  2. Measure the resistance between power seat switch connector and tilt motor connector.
    Connector & terminal
    
    (R200) No. 3 - (R203) No. 4:
    
    (R200) No. 2 - (R203) No. 6:
    
    Is the resistance less than 10 Ω?
    
    Yes: Go to 3.
    
    No: Check power seat harness.
3. CHECK TILT MOTOR.
  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
    
    (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.

Malfunction of lifter operation
1. CHECK SWITCH.
  1. Disconnect the connector of power seat switch assembly.
  2. Measure the resistance between connector terminals when moving the switch to lifter up and lifter down. Refer 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.
2. CHECK HARNESS.
  1. Disconnect the power seat switch connector and lifter motor connector.
  2. Measure the resistance between power seat switch connector and lifter motor connector.
    Connector & terminal
    
    (R200) No. 6 - (R204) No. 6:
    
    (R200) No. 9 - (R204) No. 4:
    
    Is the resistance less than 10 Ω?
    
    Yes: Go to 3.
    
    No: Check power seat harness.
3. CHECK LIFTER MOTOR.
  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
    
    (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.

Malfunction of reclining operation
1. CHECK SWITCH.
  1. Disconnect the connector of power seat switch assembly.
  2. Measure the resistance between connector terminals when moving the switch to reclining forward and reclining backward. Refer 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.
2. CHECK HARNESS.
  1. Disconnect the power seat switch connector and reclining motor connector.
  2. Measure the resistance between power seat switch connector and reclining motor connector.
    Connector & terminal
    
    (R200) No. 10 - (R201) No. 6:
    
    (R200) No. 5 - (R201) No. 4:
    
    Is the resistance less than 10 Ω?
    
    Yes: Go to 3.
    
    No: Check power seat harness.
3. CHECK RECLINING MOTOR.
  1. Connect the power seat switch connector and reclining motor connector.
  2. Apply 12 V voltage to the reclining motor and check the motor rotation.
    Connector & terminal
    
    (R201) No. 6 (+) - (R201) No. 4 (-):
    
    (R201) No. 4 (+) - (R201) 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.

Malfunction of lumbar operation
1. CHECK SWITCH.
  1. Disconnect the lumbar switch connector.
  2. Measure the resistance between connector terminals when moving the switch to lumbar forward and lumbar backward. Refer to SEATS>POWER SEAT SYSTEM>INSPECTION>CHECK LUMBAR SWITCH .
    Is the inspection result normal?
    
    Yes: Go to 2.
    
    No: Replace the lumbar switch assembly.
2. CHECK HARNESS.
  1. Disconnect the lumbar motor connector.
  2. Measure the resistance between lumbar switch connector and lumbar motor connector.
    Connector & terminal
    
    (R196) No. 2 - (R195) No. 3:
    
    (R196) No. 1 - (R195) No. 4:
    
    Is the resistance less than 10 Ω?
    
    Yes: Go to 3.
    
    No: Check power seat harness.
3. CHECK LUMBAR MOTOR.
  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
    
    (R195) No. 4 (+) - (R195) No. 3 (-):
    
    (R195) No. 3 (+) - (R195) No. 4 (-):
    
    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.