PRE-CRASH SAFETY SYSTEM 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.
| Symptom | Suspected Area | See page |
|---|---|---|
| "Check PCS system" is displayed | Seat belt control ECU | |
| Combination meter assembly | ||
| Driving support ECU | ||
| "PCS temporarily not available" is displayed | System determines that obstacles cannot be detected due to front millimeter wave radar sensor or radiator grille being dirty. If dirt is removed, normal control returns (dirt history can be checked using Data List). | - |
| System determines that obstacles cannot be detected due to rear millimeter wave radar sensor or rear bumper cover being dirty. If dirt is removed, normal control returns (dirt history can be checked using Data List). | - | |
| System determines that millimeter wave radar sensor assembly cannot detect obstacles due to bad weather. If weather recovers, normal control returns (bad weather history can be checked using Data List). | - | |
| When seat belt is retracted a certain number of times, overheating prevention fail-safe function of seat belt control ECU operates. If ECU temperature drops, normal control returns. | - | |
| Millimeter wave radar sensor assembly | ||
| Seat belt control ECU | ||
| Driving support ECU | ||
| Driver monitor camera (w/ Driver monitor camera) | ||
| Although there is possibility of collision, pre-crash control (all front collision controls) does not operate ("PCS temporarily not available" is not displayed) | Vehicle condition/environment does not match pre-crash control operation conditions (confirm control operation conditions) | - |
| Check installation condition of millimeter wave radar sensor assembly | ||
| Perform millimeter wave radar sensor assembly adjustment | ||
| Millimeter wave radar sensor assembly | ||
| Driving support ECU | ||
| Although there is no possibility of collision, pre-crash control (all front collision controls) operates | Check installation condition of millimeter wave radar sensor | |
| Perform millimeter wave radar sensor adjustment | ||
| Millimeter wave radar sensor assembly | ||
| Driving support ECU | ||
| Only pre-crash seat belt does not operate | Buckle switch error (malfunction in which DTC is not output, such as when buckle switch is stuck ON or OFF) | - |
| Seat belt control ECU | ||
| Pre-crash safety system cannot be canceled (pre-crash warning indicator does not blink) | Combination meter assembly (check if indicator illuminates using Active Test) | |
| Inspect pre-crash system cancel switch assembly | ||
| Wire harness between pre-crash system cancel switch and driving support ECU | - | |
| Driving support ECU |