Note
When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.
When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.
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. As a result, a DTC may be stored.
If the forward recognition camera has been replaced with a new one, be sure to perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.
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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| The dynamic radar cruise control system cannot be turned on using the cruise control main switch | CAN communication system | |
| Steering pad switch circuit | ||
| Cruise main indicator light circuit | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| The dynamic radar cruise control mode cannot be changed between vehicle-to-vehicle distance control mode and constant speed control mode | CAN communication system | |
| Steering pad switch circuit | ||
| Combination meter assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| The vehicle-to-vehicle distance cannot be changed | CAN communication system | |
| Distance control switch circuit | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| Vehicle speed setting cannot be performed (in constant speed control mode) | Fail-safe chart | |
| CAN communication system | ||
| Steering pad switch circuit | ||
| Stop light switch circuit | ||
| SFI system (for 8GR-FKS) | ||
| SFI system (for V35A-FTS (w/ Canister Pump Module)) | ||
| SFI system (for V35A-FTS (w/o Canister Pump Module)) | ||
| Electronically Controlled Brake System (w/ Vacuum Brake Booster) | ||
| Electronically Controlled Brake System (w/o Vacuum Brake Booster) | ||
| Driving support ECU assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Vehicle speed setting cannot be performed (in vehicle-to-vehicle distance control mode) | Millimeter wave radar sensor assembly front radar incorrect axis gap (vertical) history* | |
| Fail-safe chart | ||
| Forward recognition camera is temporarily unavailable | ||
| Millimeter wave radar sensor is dirty | ||
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| CAN communication system | ||
| Steering pad switch circuit | ||
| SFI system (for 8GR-FKS) | ||
| SFI system (for V35A-FTS (w/ Canister Pump Module)) | ||
| SFI system (for V35A-FTS (w/o Canister Pump Module)) | ||
| Millimeter wave radar sensor assembly | ||
| Forward recognition camera | ||
| Electronically Controlled Brake System (w/ Vacuum Brake Booster) | ||
| Electronically Controlled Brake System (w/o Vacuum Brake Booster) | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in constant speed control mode) | Fail-safe chart | |
| CAN communication system | ||
| Steering pad switch circuit | ||
| Stop light switch circuit | ||
| SFI system (for 8GR-FKS) | ||
| SFI system (for V35A-FTS (w/ Canister Pump Module)) | ||
| SFI system (for V35A-FTS (w/o Canister Pump Module)) | ||
| Electronically Controlled Brake System (w/ Vacuum Brake Booster) | ||
| Electronically Controlled Brake System (w/o Vacuum Brake Booster) | ||
| Driving support ECU assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in vehicle-to-vehicle distance control mode) | Fail-safe chart | |
| Forward recognition camera is temporarily unavailable | ||
| Millimeter wave radar sensor is dirty | ||
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| CAN communication system | ||
| Steering pad switch circuit | ||
| SFI system (for 8GR-FKS) | ||
| SFI system (for V35A-FTS (w/ Canister Pump Module)) | ||
| SFI system (for V35A-FTS (w/o Canister Pump Module)) | ||
| Millimeter wave radar sensor assembly | ||
| Forward recognition camera | ||
| Electronically Controlled Brake System (w/ Vacuum Brake Booster) | ||
| Electronically Controlled Brake System (w/o Vacuum Brake Booster) | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Hunting/vehicle speed is not constant (in constant speed control mode) | CAN communication system | |
| Electronically Controlled Brake System (w/ Vacuum Brake Booster) | ||
| Electronically Controlled Brake System (w/o Vacuum Brake Booster) | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Hunting/vehicle speed is not constant (in vehicle-to-vehicle distance control mode) | Millimeter wave radar sensor assembly is dirty | |
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| CAN communication system | ||
| Electronically Controlled Brake System (w/ Vacuum Brake Booster) | ||
| Electronically Controlled Brake System (w/o Vacuum Brake Booster) | ||
| Driving support ECU assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Vehicle speed control by the dynamic radar cruise control system is not canceled when CANCEL switch is pushed | Steering pad switch circuit | |
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Moving the shift lever does not cancel control of vehicle speed by the dynamic radar cruise control system | Electronic shift lever system (for AGA0E) for 8GR-FKS)) | |
| Electronic shift lever system (for AGA0E) for V35A-FTS)) | ||
| Electronic shift lever system (for AGA0F) | ||
| Transmission floor shift assembly (for AGA0E) | ||
| Transmission floor shift assembly (for AGA0F) | ||
| SFI system (for 8GR-FKS) | ||
| SFI system (for V35A-FTS (w/ Canister Pump Module)) | ||
| SFI system (for V35A-FTS (w/o Canister Pump Module)) | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Depressing the brake pedal does not cancel control of vehicle speed by the dynamic radar cruise control system | Stop light switch circuit | |
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Control cannot be canceled while the vehicle is stopped (w/ Full-speed Following Function) | Electronically Controlled Brake System (w/ Vacuum Brake Booster) | |
| Electronically Controlled Brake System (w/o Vacuum Brake Booster) | ||
| CAN communication system | ||
| Door courtesy switch circuit | ||
| Seat belt warning system | ||
| Theft deterrent system | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Parking brake ECU assembly | ||
| Even though the electric parking brake is operating, control cannot be canceled | Electronically Controlled Brake System (w/ Vacuum Brake Booster) | |
| Electronically Controlled Brake System (w/o Vacuum Brake Booster) | ||
| CAN communication system | ||
| Parking brake ECU assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Driving support ECU assembly | ||
| Even though the millimeter wave radar sensor is not dirty, the warning message "Clean Sensor" is displayed | Millimeter wave radar sensor assembly | |
| The vehicle approach warning buzzer does not sound | Meter / Gauge System | |
| Check millimeter wave radar sensor assembly installation position | ||
| Check installation of forward recognition camera | ||
| Forward recognition camera | ||
| Millimeter wave radar sensor assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Driving support ECU assembly | ||
| Even though the vehicle approach warning buzzer is sounding, brake control is not performed when decelerating | CAN communication system | |
| Electronically Controlled Brake System (w/ Vacuum Brake Booster) | ||
| Electronically Controlled Brake System (w/o Vacuum Brake Booster) | ||
| Driving support ECU assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Even though the SET function is operating, the cruise SET indicator does not illuminate | CAN communication system | |
| Cruise SET indicator light circuit | ||
| Combination meter assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| The cruise control indicator remains illuminated | CAN communication system | |
| Combination meter assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| Indicators are not illuminated on the multi-information display in the combination meter assembly | CAN communication system | |
| Combination meter assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) | ||
| The buzzer does not sound when control of vehicle speed by the dynamic radar cruise control is canceled | CAN communication system | |
| Combination meter assembly | ||
| ECM (for 8GR-FKS) | ||
| ECM (for V35A-FTS) |
*: When the "Radar Cruise Control Unavailable" message is displayed and "Front Radar Incorrect Axis Gap (Vertical) History: ON" is output, the millimeter wave radar sensor may be automatically performing beam axis calibration. In this case, the display is turned off due to beam axis adjustment being performed. Automatic calibration is complete when the "Radar Cruise Control Unavailable" messages turns off.