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Home >> Toyota >> 2012 >> Sienna SE >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Seats >> Auto Access Seat System (Diagnostic Codes & Symptom Tests) >> Auto Access Seat System >> DTC 25: Up-down Pulse Abnormal >> Description

DTC 25: Up-down Pulse Abnormal: Description

When the No. 2 power seat switch assembly (ingress and egress switch) has been operated, the position control ECU assembly outputs driving voltage to drive the access seat cylinder assembly (up-down motor). When the access seat cylinder assembly (up-down motor) is driven, its pulse sensor sends the seat position information via pulse signal to the position control ECU assembly. Based on this signal, the position control ECU assembly stores the seat up-down position.

DTC No. DTC Detection Condition Trouble Area
25 When the access seat cylinder assembly (up-down motor) is activated, 0.3 seconds pass without any edges in the pulse signal, and this occurs 7 times
  • A/A SEAT fuse
  • Power lift motor relay (raise relay)
  • Power lift motor relay (lower relay)
  • Access seat cylinder assembly (up-down motor)
  • Harness or connector
  • Position control ECU assembly