Problem Symptoms Table
HINT
- 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
Front Power Seat Control System (Driver Seat)
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Power Seat does not Operate (Manual or Memorized Position) | Driver side ECU power source circuit | DRIVER SIDE ECU POWER SOURCE CIRCUIT |
| Front power seat switch LH (Position control ECU) | - | |
| One of the Power Seat Functions does not Operate (Manual or Memorized Position) | Driver side power seat motor circuit | DRIVER SIDE POWER SEAT MOTOR CIRCUIT |
| Front power seat switch LH (Position control ECU) | - | |
| One or All Manual Seat Functions do not Operate (Memorized Positions OK) | Front power seat switch LH (Position control ECU) | POWER SEAT SWITCH |
| Memory Function does not Operate | Driver side seat memory switch circuit | DRIVER SIDE SEAT MEMORY SWITCH CIRCUIT |
| Multiplex communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Front power seat switch LH (Position control ECU) | - | |
| No Memory Functions Operate or All Memory Functions Operate Briefly and then Stop (Manual Functions OK) | Driver side ECU power source circuit | DRIVER SIDE ECU POWER SOURCE CIRCUIT |
| Front power seat switch LH (Position control ECU) | - | |
| One Memory Function does not Operate or Operates Briefly and then Stops (manual functions OK) | Front seat assembly LH (Power seat motor) | FRONT SEAT ASSEMBLY |
| Front power seat switch LH (Position control ECU) | - | |
| Wireless Transmitter Memory Function does not Operate | Perform the operation check | OPERATION CHECK |
| Check the wireless door lock operation | OPERATION CHECK | |
| Driver side seat memory switch circuit | DRIVER SIDE SEAT MEMORY SWITCH CIRCUIT | |
| Multiplex communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Front power seat switch LH (Position control ECU) | - | |
| Wireless-linked Return Function does not Operate | Perform the operation check | OPERATION CHECK |
| Check the wireless door lock operation | OPERATION CHECK | |
| Driver side seat memory switch circuit | DRIVER SIDE SEAT MEMORY SWITCH CIRCUIT | |
| Drive side power seat motor circuit | DRIVER SIDE POWER SEAT MOTOR CIRCUIT | |
| Multiplex communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Front power seat switch LH (Position control ECU) | - |
Front Power Seat Control System (Front Passenger Seat)
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Power Seat does not Operate (Manual or Memorized Position) | Front passenger side ECU power source circuit | FRONT PASSENGER SIDE ECU POWER SOURCE CIRCUIT |
| Front power seat switch RH (Position control ECU) | - | |
| One of the Power Seat Functions does not Operate (Manual or Memorized Position) | Front passenger side power seat motor circuit | FRONT PASSENGER SIDE POWER SEAT MOTOR CIRCUIT |
| Front power seat switch RH (Position control ECU) | - | |
| One or All Manual Seat Functions do not Operate (Memorized Positions OK) | Front power seat switch RH (Position control ECU) | POWER SEAT SWITCH |
| Memory Function does not Operate | Front passenger side seat memory switch circuit | FRONT PASSENGER SIDE SEAT MEMORY SWITCH CIRCUIT |
| Multiplex communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Front power seat switch RH (Position control ECU) | - | |
| No Memory Functions Operate or All Memory Functions Operate Briefly and then Stop (Manual Functions OK) | Front passenger side ECU power source circuit | FRONT PASSENGER SIDE ECU POWER SOURCE CIRCUIT |
| Front power seat switch RH (Position control ECU) | - | |
| One Memory Function does not Operate Briefly and then Stops (Manual Functions OK) | Front seat assembly RH (Power seat motor) | FRONT SEAT ASSEMBLY |
| Front power seat switch RH (Position control ECU) | - |