PRE-CRASH SAFETY SYSTEM PROBLEM SYMPTOMS TABLE
Tech Tips
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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.
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Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Pre-crash safety system (all functions) does not operate | Power source circuit | |
| Buckle switch circuit | ||
| Seat belt control ECU | ||
| Only pre-crash brake does not operate | Satellite switch circuit | |
| Brake actuator assembly (skid control ECU) | ||
| System operates when the possibility of collision does not exist | Millimeter wave radar sensor | |
| Distance control ECU | ||
| System does not operate when the possibility of collision exists | Millimeter wave radar sensor | |
| Check if inoperative conditions of the system are met | ||
| Distance control ECU | ||
| Neither normal system code nor DTC is output | Power source circuit | |
| System does not operate normally even when normal system code is output and DTCs are not output | Power source circuit |