Toyota Yaris: Lane Tracing Assist System / Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
- When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle and a DTC may be stored.
-
When the forward recognition camera is replaced with a new one or the windshield glass is replaced or removed/installed, make sure to read Before Starting Adjustment, then perform optical axis alignment for the forward recognition camera and clear the vehicle control history for each system.
HINT:
Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment.
One time recognition: Click here
Sequential recognition: Click here
Driving Adjustment: Click here
- When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
HINT:
- If no problem symptoms are found when a DTC is output in the DTC check on the lane tracing assist system, check each symptom by checking the suspected areas in the order they are listed.
- Before performing failure diagnosis according to the following inspection points, check the forward recognition camera system power source circuit fuses and relays.
| Symptom | Suspected Area | Link |
|---|---|---|
| Lane tracing assist system cannot be enabled | Steering pad switch circuit |
|
| Forward recognition camera adjustment HINT: Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment. | One time recognition: Click here
Sequential recognition: Click here
Driving Adjustment: Click here
| |
| The LTA indicator light does not turn on or off even by operating the LTA Main Switch | Indicator circuit |
|
| Steering pad switch circuit |
| |
| Combination meter assembly |
| |
| The lane tracing assist system is not canceled even by operating the turn signals | Data List / Active Test (Check the item "Turn Switch (Right)", "Turn Switch(Left)") |
|
| Turn signal switch circuit |
| |
| The lane tracing assist system does not operate many times even when the white lines are visible | Check if operating conditions are met |
|
| Adjust forward recognition camera HINT: Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment. | One time recognition: Click here
Sequential recognition: Click here
Driving Adjustment: Click here
| |
| The lane tracing assist system is operating but the system control status is not displayed on the multi-information display | Data List/Active Test (LDA Control) |
|
| Combination meter assembly |
| |
| The lane departure warning function is on but the buzzer does not sound even when straying from white line | Combination meter assembly |
|
Utility
UTILITY NOTICE: If the forward recognition camera has been replaced due to a malfunction in the lane tracing assist system, make sure to perform forward recognition camera adjustment...
Diagnosis System
DIAGNOSIS SYSTEM DIAGNOSIS MODE FUNCTION (a) When a malfunction occurs in the lane tracing assist system, the LTA indicator light illuminates in yellow and a message is displayed on the multi-information display...
Other information:
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Front Seat Belt Pretensioners
The front seat belt pretensioners are designed to deploy in moderate or severe frontal, near frontal collisions.
In addition, the pretensioners operate when a side collision or a rollover accident is detected. The pretensioners operate differently depending on what types of air bags are equipped. For more details about the seat belt pretensioner operation, refer to the SRS Air Bag Deployment Criteria.
