DYNAMIC RADAR CRUISE CONTROL SYSTEM PROBLEM SYMPTOMS TABLE
Tech Tips
-
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 this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Vehicle-to-vehicle distance cannot be changed with distance control switch | Steering pad switch assembly | |
| Steering pad ECU | - | |
| Driving support ECU | ||
| System cannot be changed to constant speed mode | Cruise control switch circuit | |
| Skid control ECU (for LHD) | ||
| Skid control ECU (for RHD) | ||
| Shift lever position sensor | ||
| Stop light switch | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Hybrid vehicle control ECU | ||
| Driving support ECU | ||
| System cannot be changed to vehicle-to-vehicle distance control mode | Front millimeter wave radar sensor | |
| Cruise control switch circuit | ||
| Skid control ECU (for LHD) | ||
| Skid control ECU (for RHD) | ||
| Shift lever position sensor | ||
| Windshield wiper switch | ||
| Stop light switch | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Hybrid vehicle control ECU | ||
| Driving support ECU | ||
| During constant speed mode operation, system is canceled | Cruise control switch circuit | |
| Skid control ECU (for LHD) | ||
| Skid control ECU (for RHD) | ||
| Shift lever position sensor | ||
| Stop light switch | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Hybrid vehicle control ECU | ||
| Driving support ECU | ||
| During vehicle-to-vehicle distance control mode operation, system is canceled | Front millimeter wave radar sensor | |
| Cruise control switch circuit | ||
| Skid control ECU (for LHD) | ||
| Skid control ECU (for RHD) | ||
| Shift lever position sensor | ||
| Windshield wiper switch | ||
| Stop light switch circuit | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Hybrid vehicle control ECU | ||
| Driving support ECU | ||
| During constant speed mode operation, hunting occurs | Skid control ECU (for LHD) | |
| Skid control ECU (for RHD) | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Hybrid vehicle control ECU | ||
| Driving support ECU | ||
| During vehicle-to-vehicle distance control mode operation, hunting occurs | Front millimeter wave radar sensor | |
| Skid control ECU (for LHD) | ||
| Skid control ECU (for RHD) | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Hybrid vehicle control ECU | ||
| Driving support ECU | ||
| Shift lever cancel operation does not operate | Shift lever position sensor | |
| Hybrid vehicle control ECU | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Driving support ECU | ||
| Low speed limit cancel operation does not operate | Skid control ECU (for LHD) | |
| Skid control ECU (for RHD) | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Driving support ECU | ||
| During vehicle-to-vehicle distance control mode, wiper cancel operation does not operate | Windshield wiper switch | |
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Driving support ECU | ||
| Even though front millimeter wave radar sensor is not dirty, "CLEAN RADAR SENSOR" is displayed | Adjust front millimeter wave radar sensor | |
| Front millimeter wave radar sensor radiator grille is dirty | - | |
| Cruise control SET indicator lights does not come on (SET function operates normally) | Cruise SET indicator light circuit | |
| Hybrid vehicle control ECU | ||
| Driving support ECU |