Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of the problem symptom. 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 the system before inspecting the suspected areas below.
FRONT POWER SEAT CONTROL SYSTEM (DRIVER SEAT)
| Symptom | Suspected Area | Reference |
|---|---|---|
| Power seat does not operate (manual or memorized position). | 1. Driver side ECU power source circuit | Refer to Driver Side ECU Power Source Circuit |
| 2. Front power seat switch LH (Position control ECU) | Refer to INSPECTION | |
| One of the power seat functions does not operate (manual or memorized position). | 1. Driver side power seat motor circuit | Refer to Driver Side Power Seat Motor Circuit |
| 2. Front power seat switch LH (Position control ECU) | Refer to INSPECTION | |
| One or all manual seat functions do not operate (memorized positions OK). | Front power seat switch LH (Position control ECU) | Refer to INSPECTION |
| Memory function does not operate. | 1. Driver side seat memory switch circuit | Refer to Driver Side Seat Memory Switch Circuit |
| 2. Multiplex communication system | Refer to DIAGNOSTIC TROUBLE CODE CHART | |
| 3. Front power seat switch LH (Position control ECU) | Refer to INSPECTION | |
| No memory functions operate or all memory functions operate briefly and then stop (manual functions OK). | 1. Driver side ECU power source circuit | Refer to INSPECTION |
| 2. Front power seat switch LH (Position control ECU) | Refer to INSPECTION | |
| One memory function does not operate or operates briefly and then stops (manual functions OK). | 1. Front seat frame with adjuster LH (Power seat motor) | Refer to INSPECTION |
| 2. Front power seat switch LH (Position control ECU) | Refer to INSPECTION | |
| Wireless transmitter memory function does not operate. | 1. Perform the operation check. | Refer to OPERATION CHECK |
| 2. Check the wireless door lock operation. | Refer to OPERATION CHECK | |
| 3. Driver side seat memory switch circuit | Refer to Driver Side Seat Memory Switch Circuit | |
| 4. Multiplex communication system | Refer to DIAGNOSTIC TROUBLE CODE CHART | |
| 5. Front power seat switch LH (Position control ECU) | Refer to INSPECTION | |
| Wireless-linked return function does not operate. | 1. Perform the operation check. | Refer to OPERATION CHECK |
| 2. Check the wireless door lock operation. | Refer to OPERATION CHECK | |
| 3. Driver side seat memory switch circuit | Refer to Driver Side Seat Memory Switch Circuit | |
| 4. Drive side power seat motor circuit | Refer to Driver Side Power Seat Motor Circuit | |
| 5. Multiplex communication system | Refer to DIAGNOSTIC TROUBLE CODE CHART | |
| 6. Front power seat switch LH (Position control ECU) | Refer to INSPECTION |
FRONT POWER SEAT CONTROL SYSTEM (FRONT PASSENGER SEAT)
| Symptom | Suspected Area | Reference |
|---|---|---|
| Power seat does not operate (manual or memorized position). | 1. Front passenger side ECU power source circuit | Refer to Front Passenger Side ECU Power Source Circuit |
| 2. Front power seat switch RH (Position control ECU) | Refer to INSPECTION | |
| One of the power seat functions does not operate (manual or memorized position). | 1. Front passenger side power seat motor circuit | Refer to Front Passenger Side Power Seat Motor Circuit |
| 2. Front power seat switch RH (Position control ECU) | Refer to INSPECTION | |
| One or all manual seat functions do not operate (memorized positions OK). | Front power seat switch RH (Position control ECU) | Refer to INSPECTION |
| Memory function does not operate. | 1. Front passenger side seat memory switch circuit | Refer to Front Passenger Side Seat Memory Switch Circuit |
| 2. Multiplex communication system | Refer to DIAGNOSTIC TROUBLE CODE CHART | |
| 3. Front power seat switch RH (Position control ECU) | Refer to INSPECTION | |
| No memory functions operate or all memory functions operate briefly and then stop (manual functions OK). | 1. Front passenger side ECU power source circuit | Refer to Front Passenger Side ECU Power Source Circuit |
| 2. Front power seat switch RH (Position control ECU) | Refer to INSPECTION | |
| One memory function does not operate briefly and then stops (manual functions OK). | Front seat frame with adjuster RH (Power seat motor) | Refer to INSPECTION |