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HOMESERVICE MANUALSSUBARU2014LEGACY 2.5I, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISBODY & FRAMESEATSSEAT SYSTEM - SEATSPOWER SEAT SYSTEMINSPECTIONSOME MOTORS DO NOT OPERATE (WITH MEMORY)
2014 Subaru Legacy 2.5i, Automatic CVT Trans

Some Motors Do Not Operate (With Memory)

2014 Subaru Legacy 2.5i, Automatic CVT TransSECTION Some Motors Do Not Operate (With Memory)
  • Slide operation failure
    Step Check Yes No
    1 CHECK OPERATION. 
    Check the slide motor rotation while moving the switch to slide forward and slide backward.    		 Does the motor operate at least 1 second when the switch is operated? Go to step 2  . Encoder defection. Replace the seat cushion frame assembly.
    2 CHECK SWITCH. 
    1. Disconnect the harness connector of power seat switch assembly.
    2. Measure the resistance between connector terminals when moving the switch to slide forward and slide backward. < Ref. to CHECK POWER SEAT SWITCH , INSPECTION, Power Seat System. >
    		 Is there any problem on the inspection result? Go to step 3  . Replace the power seat switch assembly.
    3 CHECK HARNESS. 
    1. Disconnect the power seat switch connector and slide motor connector.
    2. Measure the resistance between the power seat control module connector and power seat switch connector.

      Connector & terminal 

      (R388) No. 7 - (R369) No. 13: 

      (R388) No. 6 - (R369) No. 14: 

    		 Is the resistance less than 10 Ω? Go to step 4  . Check power seat harness.
    4 CHECK HARNESS. 
    1. Disconnect the slide motor connector.
    2. Measure the resistance between power seat control module connector and slide motor connector.

      Connector & terminal 

      (R389) No. 15 - (R370) No. 2: 

      (R389) No. 16 - (R370) No. 1: 

    		 Is the resistance less than 10 Ω? Go to step 5  . Check power seat harness.
    5 CHECK SLIDE MOTOR. 
    1. Connect the slide motor connector.
    2. Apply battery voltage to the power seat control module connector and check the motor rotation.

      Connector & terminal 

      (R389) No. 15 (+) - (R389) No. 16 (-): 

      (R389) No. 16 (+) - (R389) No. 15 (-): 

    		 Does the motor rotate normally? Replace the power seat control module. Slide motor problem. Replace the seat cushion frame assembly.
  • Malfunction of tilt operation
    Step Check Yes No
    1 CHECK OPERATION. 
    Check the tilt motor rotation while moving the switch to tilt up and tilt down.    		 Does the motor operate at least 1 second when the switch is operated? Go to step 2  . Encoder defection. Replace the seat cushion frame assembly.
    2 CHECK SWITCH. 
    1. Disconnect the harness connector of power seat switch assembly.
    2. Measure the resistance between connector terminals when moving the switch to tilt up and tilt down. < Ref. to CHECK POWER SEAT SWITCH , INSPECTION, Power Seat System. >
    		 Is there any problem on the inspection result? Go to step 3  . Replace the power seat switch assembly.
    3 CHECK HARNESS. 
    1. Disconnect the power seat switch connector and tilt motor connector.
    2. Measure the resistance between the power seat control module connector and power seat switch connector.

      Connector & terminal 

      (R388) No. 5 - (R369) No. 2: 

      (R388) No. 4 - (R369) No. 1: 

    		 Is the resistance less than 10 Ω? Go to step 4  . Check power seat harness.
    4 CHECK HARNESS. 
    1. Disconnect the tilt motor connector.
    2. Measure the resistance between power seat control module connector and tilt motor connector.

      Connector & terminal 

      (R389) No. 5 - (R372) No. 2: 

      (R389) No. 4 - (R372) No. 1: 

    		 Is the resistance less than 10 Ω? Go to step 5  . Check power seat harness.
    5 CHECK TILT MOTOR. 
    1. Connect the tilt motor connector.
    2. Apply battery voltage to the power seat control module connector and check the motor rotation.

      Connector & terminal 

      (R389) No. 5 (+) - (R389) No. 4 (-): 

      (R389) No. 4 (+) - (R389) No. 5 (-): 

    		 Does the motor rotate normally? Replace the power seat control module. Tilt motor problem. Replace the seat cushion frame assembly.
  • Malfunction of lifter operation
    Step Check Yes No
    1 CHECK OPERATION. 
    Check the lifter motor rotation while turning the switch to lifter up and lifter down.    		 Does the motor operate at least 1 second when the switch is operated? Go to step 2  . Encoder defection. Replace the seat cushion frame assembly.
    2 CHECK SWITCH. 
    1. Disconnect the harness connector of power seat switch assembly.
    2. Measure the resistance between connector terminals when moving the switch to lifter up and lifter down. < Ref. to CHECK POWER SEAT SWITCH , INSPECTION, Power Seat System. >
    		 Is there any problem on the inspection result? Go to step 3  . Replace the power seat switch assembly.
    3 CHECK HARNESS. 
    1. Disconnect the power seat switch connector and lifter motor connector.
    2. Measure the resistance between the power seat control module connector and power seat switch connector.

      Connector & terminal 

      (R388) No. 3 - (R369) No. 5: 

      (R388) No. 2 - (R369) No. 6: 

    		 Is the resistance less than 10 Ω? Go to step 4  . Check power seat harness.
    4 CHECK HARNESS. 
    1. Disconnect the lifter motor connector.
    2. Measure the resistance between power seat control module connector and lifter motor connector.

      Connector & terminal 

      (R389) No. 2 - (R371) No. 2: 

      (R389) No. 1 - (R371) No. 1: 

    		 Is the resistance less than 10 Ω? Go to step 5  . Check power seat harness.
    5 CHECK LIFTER MOTOR. 
    1. Connect the lifter motor connector.
    2. Apply battery voltage to the power seat control module connector and check the motor rotation.

      Connector & terminal 

      (R389) No. 2 (+) - (R389) No. 1 (-): 

      (R389) No. 1 (+) - (R389) No. 2 (-): 

    		 Does the motor rotate normally? Replace the power seat control module. Lifter motor problem. Replace the seat cushion frame assembly.
  • Malfunction of reclining operation
    Step Check Yes No
    1 CHECK OPERATION. 
    Check the reclining motor rotation while moving the switch to reclining forward and reclining backward.    		 Does the motor operate at least 1 second when the switch is operated? Go to step 2  . Encoder defection. Replace the backrest frame assembly.
    2 CHECK SWITCH. 
    1. Disconnect the harness connector of power seat switch assembly.
    2. Measure the resistance between connector terminals when moving the switch to reclining forward and reclining backward. < Ref. to CHECK POWER SEAT SWITCH , INSPECTION, Power Seat System. >
    		 Is there any problem on the inspection result? Go to step 3  . Replace the power seat switch assembly.
    3 CHECK HARNESS. 
    1. Disconnect the power seat switch connector and reclining motor connector.
    2. Measure the resistance between the power seat control module connector and power seat switch connector.

      Connector & terminal 

      (R388) No. 9 - (R369) No. 4: 

      (R388) No. 8 - (R369) No. 3: 

    		 Is the resistance less than 10 Ω? Go to step 4  . Check power seat harness.
    4 CHECK HARNESS. 
    1. Disconnect the slide motor connector.
    2. Measure the resistance between power seat control module connector and reclining motor connector.

      Connector & terminal 

      (R389) No. 6 - (R375) No. 1: 

      (R389) No. 7 - (R375) No. 2: 

    		 Is the resistance less than 10 Ω? Go to step 5  . Check power seat harness.
    5 CHECK RECLINING MOTOR. 
    1. Connect the slide motor connector.
    2. Apply battery voltage to the power seat control module connector and check the motor rotation.

      Connector & terminal 

      (R389) No. 6 (+) - (R389) No. 7 (-): 

      (R389) No. 7 (+) - (R389) No. 6 (-): 

    		 Does the motor rotate normally? Replace the power seat control module. Reclining motor problem. Replace the backrest frame assembly.
  • Malfunction of lumbar operation
    Step Check Yes No
    1 CHECK SWITCH. 
    1. Disconnect the connector of lumbar switch assembly.
    2. Measure the resistance between connector terminals when moving the switch to lumbar forward and lumbar backward. < Ref. to CHECK LUMBAR SWITCH , INSPECTION, Power Seat System. >
    		 Is there any problem on the inspection result? Go to step 2  . Replace the lumbar switch assembly.
    2 CHECK HARNESS. 
    1. Disconnect the lumbar switch connector and lumbar motor connector.
    2. Measure the resistance between lumbar switch connector and lumbar motor connector.

      Connector & terminal 

      (R376) No. 4 - (R379) No. 1: 

      (R376) No. 3 - (R379) No. 2: 

    		 Is the resistance less than 10 Ω? Go to step 3  . Check power seat harness.
    3 CHECK LUMBAR MOTOR. 
    1. Connect the lumbar switch connector and lumbar motor connector.
    2. Apply 12 V voltage to the lumbar motor and check the motor rotation.

      Connector & terminal 

      (R376) No. 4 (+) - (R376) No. 3 (-): 

      (R376) No. 3 (+) - (R376) No. 4 (-): 

    		 Does the motor rotate normally? Check for temporary poor contact or mechanical trouble in lumbar mechanism. Lumbar motor problem. Replace the backrest frame assembly.
RENDER: 1.0x

NO RELATED

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