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Power Seat Adjuster Mechanical Diagnosis

Power Seat Adjuster Mechanical Diagnosis


Condition Possible Cause Correction
Horizontal Operation of Seat Not Smooth but Jerky-Apparent Hard Operation
• Check for debris under seat in track.

• The adjuster horizontal actuator is damaged.



• Remove debris.

• Replace the adjuster assembly.


Horizontal Chuck or Looseness
• The horizontal actuator is improperly adjusted to the rack.

• The top plate subassembly is loose.

• Drive screw for adjuster is worn.



• Replace the adjuster assembly.

• Replace the adjuster assembly.

• Replace the adjuster assembly.


One Adjuster Will Not Operate Horizontally
• The horizontal drive cable is disconnected or damaged.

• The horizontal actuator is inoperative.



• Inspect the drive cables, they must be straight to be engaged. Replace if necessary.

• Replace the adjuster assembly.


One Adjuster Will not Operate Vertically
• The vertical drive cable is disconnected or damaged.

• The vertical actuator subassembly is inoperative.



• Inspect the vertical drive cables, replace if damaged.

• Replace the adjuster assembly.


Both Adjusters Will Not Operate Horizontally and/or Vertically
• The actuator is damaged or inoperative.

• The wiring harness is damaged.



• Replace the adjuster assembly

• Replace the wiring harness.


Vertical Chuck or Looseness The vertical actuator is inoperative. Replace the adjuster assembly.