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 switch (ON/OFF) | CAN communication system (for RHD with Central Gateway ECU) | |
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Cruise control switch circuit | ||
| Cruise main indicator light circuit | ||
| Combination meter assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| The cruise control mode cannot be changed between vehicle-to-vehicle distance control mode and constant speed control mode | CAN communication system (for RHD with Central Gateway ECU) | |
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Cruise control switch circuit | ||
| Combination meter assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| The vehicle-to-vehicle distance cannot be changed | CAN communication system (for RHD with Central Gateway ECU) | |
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Cruise control switch circuit | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| Vehicle speed setting cannot be performed (in constant speed control mode) | VSC is turned off | - |
| CAN communication system (for RHD with Central Gateway ECU) | ||
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Cruise control switch circuit | ||
| Stop light switch circuit | ||
| Automatic transaxle system (for U660F) | ||
| Automatic transaxle system (for U760E) | ||
| Automatic transaxle system (for U760F) | ||
| Automatic transaxle system (for K111) | ||
| Automatic transaxle system (for K111F) | ||
| Automatic transaxle system (for K114) | ||
| Automatic transaxle system (for K114F) | ||
| Vehicle stability control system | ||
| Driving support ECU assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Vehicle speed setting cannot be performed (in vehicle-to-vehicle distance control mode) | VSC is turned off | - |
| The forward recognition camera is temporarily unavailable | - | |
| Millimeter wave radar sensor is dirty | - | |
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| CAN communication system (for RHD with Central Gateway ECU) | ||
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Cruise control switch circuit | ||
| Automatic transaxle system (for U660F) | ||
| Automatic transaxle system (for U760E) | ||
| Automatic transaxle system (for U760F) | ||
| Automatic transaxle system (for K111) | ||
| Automatic transaxle system (for K111F) | ||
| Automatic transaxle system (for K114) | ||
| Automatic transaxle system (for K114F) | ||
| Millimeter wave radar sensor assembly | ||
| Forward recognition camera | ||
| Vehicle stability control system | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in constant speed control mode) | VSC is turned off | - |
| CAN communication system (for RHD with Central Gateway ECU) | ||
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Cruise control switch circuit | ||
| Stop light switch circuit | ||
| Automatic transaxle system (for U660F) | ||
| Automatic transaxle system (for U760E) | ||
| Automatic transaxle system (for U760F) | ||
| Automatic transaxle system (for K111) | ||
| Automatic transaxle system (for K111F) | ||
| Automatic transaxle system (for K114) | ||
| Automatic transaxle system (for K114F) | ||
| Vehicle stability control system | ||
| Driving support ECU assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in vehicle-to-vehicle distance control mode) | VSC is turned off | - |
| Millimeter wave radar sensor is dirty | - | |
| The forward recognition camera is temporarily unavailable | - | |
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| CAN communication system (for RHD with Central Gateway ECU) | ||
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Cruise control switch circuit | ||
| Automatic transaxle system (for U660F) | ||
| Automatic transaxle system (for U760E) | ||
| Automatic transaxle system (for U760F) | ||
| Automatic transaxle system (for K111) | ||
| Automatic transaxle system (for K111F) | ||
| Automatic transaxle system (for K114) | ||
| Automatic transaxle system (for K114F) | ||
| Millimeter wave radar sensor assembly | ||
| Forward recognition camera | ||
| Vehicle stability control system | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Hunting/vehicle speed is not constant (in constant speed control mode) | CAN communication system (for RHD with Central Gateway ECU) | |
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Vehicle stability control system | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Hunting/vehicle speed is not constant (in vehicle-to-vehicle distance control mode) | Millimeter wave radar sensor is dirty | - |
| CAN communication system (for RHD with Central Gateway ECU) | ||
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Vehicle stability control system | ||
| Driving support ECU assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Pulling the cruise control switch to CANCEL does not cancel control of vehicle speed by the dynamic radar cruise control system | Cruise control switch circuit | |
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Moving the shift lever does not cancel control of vehicle speed by the dynamic radar cruise control system | Park/neutral position switch assembly (for U660F) | |
| Park/neutral position switch assembly (for U760E) | ||
| Park/neutral position switch assembly (for U760F) | ||
| Park/neutral position switch assembly (for K111) | ||
| Park/neutral position switch assembly (for K111F) | ||
| Park/neutral position switch assembly (for K114) | ||
| Park/neutral position switch assembly (for K114F) | ||
| Shift lock control unit assembly (for U660F) | ||
| Shift lock control unit assembly (for U760E) | ||
| Shift lock control unit assembly (for U760F) | ||
| Shift lock control unit assembly (for K111) | ||
| Shift lock control unit assembly (for K111F) | ||
| Shift lock control unit assembly (for K114) | ||
| Shift lock control unit assembly (for K114F) | ||
| Automatic transaxle system (for U660F) | ||
| Automatic transaxle system (for U760E) | ||
| Automatic transaxle system (for U760F) | ||
| Automatic transaxle system (for K111) | ||
| Automatic transaxle system (for K111F) | ||
| Automatic transaxle system (for K114) | ||
| Automatic transaxle system (for K114F) | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Vehicle speed control by the cruise control system is not canceled when the paddle shift switch is operated | Shift paddle switch circuit (for K114F) | |
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Depressing the brake pedal does not cancel control of vehicle speed by the dynamic radar cruise control system | Stop light switch circuit | |
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Depressing the clutch pedal does not cancel control of vehicle speed by the dynamic radar cruise control system (for Manual Transaxle) | Clutch switch circuit | |
| ECM (for 2WW) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| 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 | Skid control buzzer circuit | |
| Check installation of millimeter wave radar sensor | ||
| Check installation of forward recognition camera | ||
| Forward recognition camera | ||
| Millimeter wave radar sensor assembly | ||
| Driving support ECU assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Even though the vehicle approach warning buzzer is sounding, brake control is not performed when decelerating | Vehicle stability control system | |
| CAN communication system (for RHD with Central Gateway ECU) | ||
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Driving support ECU assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Even though the SET function is operating, the cruise control SET indicator does not illuminate | CAN communication system (for RHD with Central Gateway ECU) | |
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Cruise control SET indicator light circuit | ||
| Combination meter assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| The cruise control indicator remains illuminated | CAN communication system (for RHD with Central Gateway ECU) | |
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Combination meter assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| Indicators are not illuminated on the multi-information display in the combination meter assembly | CAN communication system (for RHD with Central Gateway ECU) | |
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Combination meter assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| The buzzer does not sound when control of vehicle speed by the dynamic radar cruise control is canceled | CAN communication system (for RHD with Central Gateway ECU) | |
| CAN communication system (for LHD with Central Gateway ECU) | ||
| Combination meter assembly | ||
| ECM (for 2WW) | ||
| ECM (for 2AD-FHV) | ||
| ECM (for 2AD-FTV) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 3ZR-FAE) | ||
| ECM (for 3ZR-FE) | ||
| The dynamic radar cruise control system speed control is not canceled even when the shift lever is in neutral for a certain period of time. (for 3ZR-FAE, Manual Transaxle) | CAN communication system (for LHD with Central Gateway ECU) | |
| Stop and start system (for 3ZR-FAE) | ||
| ECM (for 3ZR-FAE) |