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. - Disconnect the harness connector of power seat switch assembly.
- 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. - Disconnect the power seat switch connector and slide motor connector.
- 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. - Disconnect the slide motor connector.
- 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. - Connect the slide motor connector.
- 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. - Disconnect the harness connector of power seat switch assembly.
- 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. - Disconnect the power seat switch connector and tilt motor connector.
- 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. - Disconnect the tilt motor connector.
- 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. - Connect the tilt motor connector.
- 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. - Disconnect the harness connector of power seat switch assembly.
- 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. - Disconnect the power seat switch connector and lifter motor connector.
- 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. - Disconnect the lifter motor connector.
- 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. - Connect the lifter motor connector.
- 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. - Disconnect the harness connector of power seat switch assembly.
- 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. - Disconnect the power seat switch connector and reclining motor connector.
- 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. - Disconnect the slide motor connector.
- 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. - Connect the slide motor connector.
- 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. - Disconnect the connector of lumbar switch assembly.
- 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. - Disconnect the lumbar switch connector and lumbar motor connector.
- 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. - Connect the lumbar switch connector and lumbar motor connector.
- 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.