Flow of Diagnosis
POWER SEAT1. Verify customer concern by operating the power seat system.
2. Visually inspect the components of the power seat system.
VISUAL INSPECTION CHART
Mechanical
^ Damaged air tubes/hoses
^ Improper air hose routing
^ Damaged lumbar Support bags
^ Damaged lumbar support switch
Electrical
^ Blown fuse: 50 A POWER SEAT
^ Loose or corroded connectors
^ Damaged wiring
^ Damaged switches
^ Damaged motors
3. Check the wiring harness for obvious signs of shorts, opens, bad connections or damage.
4. If one of the power seat positions (slide, tilt, lift) does not work, check for opens/damage in the pigtail circuit wires coming off the seat back control switch that lead to the seat regulator motors.
5. Check the lumbar support system for disconnected, kinked, or damaged air tubes/hoses. Also, look for leaking/damaged lumbar support bags.
6. If an obvious cause for malfunction can be found, correct the cause of the malfunction (if possible) before proceeding further.
7. If the fault is not visually evident, determine the symptom and proceed to the symptom chart. Symptom Related Diagnostic Procedures