Problem Symptoms Table [08/2019 - ]
NOTE:
- Before replacing the ECM, refer to Registration.
Refer to REGISTRATION [08/2019 - 07/2021] , or refer to REGISTRATION [07/2021 - ]
- When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle and a DTC may be stored.
- When the millimeter wave radar sensor assembly has been replaced with a new one, it is necessary to perform millimeter wave radar sensor assembly adjustment and front radar acceleration sensor calibration, and to clear the vehicle control history.
Refer to ADJUSTMENT [08/2019 - ]
- When replacing the forward recognition camera, 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.
- If the forward recognition camera has been replaced with a new one or the windshield glass has been removed and installed, it is necessary to perform forward recognition camera adjustment.
HINT:
Forward recognition camera adjustment can be performed by using either One Time Recognition or Sequential Recognition.
One Time Recognition: Refer to ADJUSTMENT (ONE TIME RECOGNITION) [08/2019 - ]
Sequential Recognition: Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [08/2019 - ]
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.
- Determine the problem systems, then perform the respective inspection procedures.
- By using the vehicle control history, various control parameter history can be checked.
DYNAMIC RADAR CRUISE CONTROL SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| The dynamic radar cruise control system cannot be turned on using the cruise control main switch | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit [08/2019 - ] | |
| Cruise main indicator light circuit | Refer to Cruise Main Indicator Light Circuit [08/2019 - ] | |
| Forward recognition camera | Refer to REMOVAL [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| The dynamic radar cruise control mode cannot be changed between vehicle-to-vehicle distance control mode and constant speed control mode | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| The vehicle-to-vehicle distance cannot be changed | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] |
| Distance control switch circuit | Refer to Distance Control Switch Circuit [08/2019 - ] | |
| Forward recognition camera | Refer to REMOVAL [08/2019 - ] | |
| Vehicle speed setting cannot be performed (in constant speed control mode) | Fail-safe chart | Refer to FAIL-SAFE CHART [08/2019 - ] |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit [08/2019 - ] | |
| Stop light switch circuit | Refer to DTC P0571-62: Brake Switch "A" Signal Compare Failure [08/2019 - ] | |
| Automatic transaxle system (for U881E) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Automatic transaxle system (for U881F) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Vehicle stability control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] | |
| Forward recognition camera | Refer to REMOVAL [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Vehicle speed setting cannot be performed (in vehicle-to-vehicle distance control mode) | Front Radar Sensor Temporary Unavailable (Optical Axis Misalignment) history* | Refer to VEHICLE CONTROL HISTORY [08/2019 - ] |
| Fail-safe chart | Refer to FAIL-SAFE CHART [08/2019 - ] | |
| Forward recognition camera is temporarily unavailable | Refer to FAIL-SAFE CHART [08/2019 - ] | |
| Millimeter wave radar sensor assembly is dirty | Refer to FAIL-SAFE CHART [08/2019 - ] | |
| Millimeter wave radar sensor assembly beam axis not adjusted | Refer to ADJUSTMENT [08/2019 - ] | |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit [08/2019 - ] | |
| Automatic transaxle system (for U881E) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Automatic transaxle system (for U881F) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [08/2019 - ] | |
| Forward recognition camera | Refer to REMOVAL [08/2019 - ] | |
| Vehicle stability control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in constant speed control mode) | Fail-safe chart | Refer to FAIL-SAFE CHART [08/2019 - ] |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit [08/2019 - ] | |
| Stop light switch circuit | Refer to DTC P0571-62: Brake Switch "A" Signal Compare Failure [08/2019 - ] | |
| Automatic transaxle system (for U881E) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Automatic transaxle system (for U881F) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Vehicle stability control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in vehicle-to-vehicle distance control mode) | Fail-safe chart | Refer to FAIL-SAFE CHART [08/2019 - ] |
| Forward recognition camera is temporarily unavailable | Refer to FAIL-SAFE CHART [08/2019 - ] | |
| Millimeter wave radar sensor assembly is dirty | Refer to FAIL-SAFE CHART [08/2019 - ] | |
| Millimeter wave radar sensor assembly beam axis not adjusted | Refer to ADJUSTMENT [08/2019 - ] | |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit [08/2019 - ] | |
| Automatic transaxle system (for U881E) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Automatic transaxle system (for U881F) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [08/2019 - ] | |
| Forward recognition camera | Refer to REMOVAL [08/2019 - ] | |
| Vehicle stability control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Hunting/vehicle speed is not constant (in constant speed control mode) | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] |
| Vehicle stability control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Hunting/vehicle speed is not constant (in vehicle-to-vehicle distance control mode) | Millimeter wave radar sensor assembly is dirty | Refer to FAIL-SAFE CHART [08/2019 - ] |
| Millimeter wave radar sensor assembly beam axis not adjusted | Refer to ADJUSTMENT [08/2019 - ] | |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Vehicle stability control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Vehicle speed control by the dynamic radar cruise control system is not canceled when the CANCEL switch is pushed | Cruise control switch circuit | Refer to Cruise Control Switch Circuit [08/2019 - ] |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Moving the shift lever does not cancel control of vehicle speed by the dynamic radar cruise control system | Park/neutral position switch assembly (for U881E) | Refer to REMOVAL [08/2019 - ] |
| Park/neutral position switch assembly (for U881F) | Refer to REMOVAL [08/2019 - ] | |
| Transmission floor shift assembly (for U881E) | Refer to INSPECTION [09/2015 - ] | |
| Transmission floor shift assembly (for U881F) | Refer to INSPECTION [08/2019 - ] | |
| Automatic transaxle system (for U881E) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Automatic transaxle system (for U881F) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Vehicle speed control by the dynamic radar cruise control system is not canceled when a shift paddle switch is operated | Automatic transaxle system (for U881E) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] |
| Automatic transaxle system (for U881F) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Shift paddle switch circuit (for U881E) | Refer to Shift Paddle Switch Circuit [08/2016 - ] | |
| Shift paddle switch circuit (for U881F) | Refer to Shift Paddle Switch Circuit [09/2015 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Depressing the brake pedal does not cancel control of vehicle speed by the dynamic radar cruise control system | Stop light switch circuit | Refer to DTC P0571-62: Brake Switch "A" Signal Compare Failure [08/2019 - ] |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Control cannot be canceled while the vehicle is stopped | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] |
| Vehicle stability control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] | |
| Electric parking brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] | |
| Seat belt warning system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Door courtesy switch circuit | Refer to Door Courtesy Switch Circuit [09/2015 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Control cannot be canceled by operating the parking brake | Electric parking brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Even though the millimeter wave radar sensor assembly and forward recognition camera are not dirty, the warning message "Radar Cruise Control Unavailable See Owner's Manual" is displayed | Millimeter wave radar sensor assembly | Refer to REMOVAL [08/2019 - ] |
| Forward recognition camera | Refer to REMOVAL [08/2019 - ] | |
| The vehicle approach warning buzzer does not sound | Skid control buzzer assembly | Refer to INSPECTION [09/2015 - ] |
| Check millimeter wave radar sensor assembly installation position | Refer to INSTALLATION [08/2019 - ] | |
| Check installation of forward recognition camera | Refer to INSTALLATION [08/2019 - ] | |
| Forward recognition camera | Refer to REMOVAL [08/2019 - ] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [08/2019 - ] | |
| Even though the vehicle approach warning buzzer is sounding, brake control is not performed to decelerate the vehicle | Vehicle stability control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] | |
| Forward recognition camera | Refer to REMOVAL [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Even though the SET function is operating, the cruise SET indicator does not illuminate | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] |
| Cruise SET indicator light circuit | Refer to Cruise SET Indicator Light Circuit [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| The cruise control indicator remains illuminated | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] |
| Cruise main indicator light circuit | Refer to Cruise Main Indicator Light Circuit [08/2019 - ] | |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| Indicators are not displayed on the multi-information display in the combination meter assembly | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] |
| ECM | Refer to REMOVAL [08/2019 - ] | |
| A buzzer does not sound when control of vehicle speed by the dynamic radar cruise control is canceled | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] |
| ECM | Refer to REMOVAL [08/2019 - ] |
- *: When "Radar Cruise Control Unavailable" is displayed and there is "Front Radar Sensor Temporary Unavailable (Optical Axis Misalignment)" history, the beam axis of the millimeter wave radar sensor assembly may be being aligned. In this case, wait for beam axis alignment to complete. When beam axis alignment is complete, "Radar Cruise Control Unavailable" stops being displayed.