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 cruise control system cannot be turned on using the cruise control main switch (The cruise control indicator does not illuminate) | CAN communication system | |
| Cruise control indicator light circuit | ||
| Steering pad switch circuit | ||
| Combination meter assembly | ||
| Hybrid vehicle control ECU assembly | ||
| The cruise control SET indicator does not illuminate (Vehicle speed can be set) | CAN communication system | |
| Cruise SET indicator light circuit | ||
| Combination meter assembly | ||
| Hybrid vehicle control ECU assembly | ||
| Vehicle speed cannot be set (The cruise control indicator illuminates when the cruise control system is turned on using the cruise control main switch, but the cruise control indicator turns off when the -SET switch is pushed) | Steering pad switch circuit | |
| Hybrid vehicle control ECU assembly | ||
| Vehicle speed cannot be set (The cruise control indicator illuminates when the cruise control system is turned on using the cruise control main switch, and it remains illuminated when the -SET switch is pushed) | Inspect the fail-safe control list | |
| CAN communication system | ||
| Electronically controlled brake system | ||
| Hybrid control system | ||
| Steering pad switch circuit | ||
| Stop light switch circuit | ||
| Combination meter assembly | ||
| Hybrid vehicle control ECU assembly | ||
| Vehicle speed control by the cruise control system is automatically canceled after it has started | Inspect the fail-safe control list | |
| CAN communication system | ||
| Electronically controlled brake system | ||
| Hybrid control system | ||
| Steering pad switch circuit | ||
| Stop light switch circuit | ||
| Hybrid vehicle control ECU assembly | ||
| Hunting (Speed is not constant) | Hybrid control system | |
| SFI system (w/ Canister pump module) | ||
| SFI system (w/o Canister pump module) | ||
| Hybrid vehicle control ECU assembly | ||
| Vehicle speed control by the cruise control system is not canceled when the CANCEL switch is pushed. | Steering pad switch circuit | |
| Hybrid vehicle control ECU assembly | ||
| Vehicle speed control by the cruise control system is not canceled when vehicle speed drops below the low speed limit | Electronically controlled brake system | |
| Hybrid vehicle control ECU assembly | ||
| Moving the shift lever does not cancel vehicle speed control by the cruise control system | Electronic shift lever system | |
| Transmission floor shift assembly | ||
| Hybrid vehicle control ECU assembly | ||
| Depressing the brake pedal does not cancel vehicle speed control by the cruise control system | Stop light switch circuit | |
| Hybrid vehicle control ECU assembly |