Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| All functions do not operate | Front power seat switch LH | |
| Wire harness or connector | - | |
| Only slide function does not operate | Front power seat switch LH | |
| Slide motor (front seat frame with adjuster assembly LH)*1 | ||
| Slide motor (separate type front seat cushion spring assembly)*2 | ||
| Wire harness or connector | - | |
| Only front vertical function does not operate | Front power seat switch LH | |
| Front vertical motor (front seat frame with adjuster assembly LH)*1 | ||
| Front vertical motor (separate type front seat cushion spring assembly)*2 | ||
| Wire harness or connector | - | |
| Only lifter function does not operate | Front power seat switch LH | |
| Lifter motor (front seat frame with adjuster assembly LH)*1 | ||
| Lifter motor (separate type front seat cushion spring assembly)*2 | ||
| Wire harness or connector | - | |
| Only reclining function does not operate | Front power seat switch LH | |
| Reclining motor (front seat back frame sub-assembly LH)*1 | ||
| Reclining motor (separate type front seat back spring assembly)*2 | ||
| Wire harness or connector | - | |
| Only lumbar support adjustment function does not operate | Lumbar front power seat switch | |
| Front power seat switch LH | ||
| Lumbar support adjuster assembly*1 | ||
| Lumbar support adjuster assembly (separate type front seat back spring assembly)*2 | ||
| Wire harness or connector | - |
*1: for TMMK Made
*2: for SIA Made
| Symptom | Suspected Area | See page |
|---|---|---|
| All functions do not operate | Front power seat switch RH | |
| Wire harness or connector | - | |
| Only slide function does not operate | Front power seat switch RH | |
| Slide motor (front seat frame with adjuster assembly RH)*1 | ||
| Slide motor (separate type front seat cushion spring assembly)*2 | ||
| Wire harness or connector | - | |
| Only reclining function does not operate | Front power seat switch RH | |
| Reclining motor (front seat back frame sub-assembly RH)*1 | ||
| Reclining motor (separate type front seat back spring assembly)*2 | ||
| Wire harness or connector | - |
*1: for TMMK Made
*2: for SIA Made