FRONT POWER SEAT CONTROL SYSTEM (w/ Memory) PROBLEM SYMPTOMS TABLE
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 |
|---|---|---|
| Front Power Seat does not Operate with Front Power Seat Switch | Position control ECU and switch assembly | |
| Wire harness or connector | - | |
| One or more Power Seat Motors do not Operate | Separate type front seat cushion assembly | |
| Position control ECU and switch assembly | - | |
| Wire harness or connector | - | |
| Power Seat Position is not Memorized | Position control ECU and switch assembly | |
| Outer mirror control ECU assembly LH | - | |
| Main body ECU (driver side junction block assembly) | - | |
| Seat memory switch | - | |
| Wire harness or connector | - | |
| Power Seat does not Return to Memorized Position | SFI system | |
| Lighting system (int) | - | |
| Position control ECU and switch assembly | - | |
| Main body ECU (driver side junction block assembly) | - | |
| Outer mirror control ECU assembly LH | - | |
| Wireless Transmitter Memory Function does not Operate | Power door lock control system | |
| Lighting system (int) | - | |
| Smart entry and start system (for start function)* | - | |
| Position control ECU and switch assembly | - | |
| Main body ECU (driver side junction block assembly) | - | |
| Certification ECU (smart key ECU assembly)* | - | |
| Wireless-linked Return Function does not Operate | Wireless door lock control system (w/ smart entry and start system) | |
| Wireless door lock control system (w/o smart entry and start system) | - | |
| Lighting system (int) | - | |
| Smart entry and start system (for entry function)* | - | |
| Main body ECU (driver side junction block assembly) | - | |
| Position control ECU and switch assembly | - | |
| Certification ECU (smart key ECU assembly)* | - | |
| Power Seat Power Easy Access System Function does not Operate | Position control ECU and switch assembly | |
| Main body ECU (driver side junction block assembly) | - | |
| Front seat inner belt assembly LH | - | |
| Wire harness or connector | - | |
| Only Lumbar Support Adjustment Function does not Operate | Front lumbar power seat switch | |
| Lumbar support adjuster assembly | ||
| Wire harness or connector | - |
-
*: w/ Smart Entry and Start System