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.
A part of the control history can be confirmed using the vehicle control history.
When replacing the combination meter assembly, make sure to replace it with a new one.
| Symptom | Suspected Area | Link |
|---|---|---|
| Cruise control main switch does not turn on (cruise control indicator does not illuminate) | CAN communication system | |
| Cruise main indicator circuit | ||
| Cruise control switch circuit | ||
| Combination meter assembly | ||
| Hybrid vehicle control ECU | ||
| Cruise control SET indicator does not illuminate (can be set) | CAN communication system | |
| Cruise control SET indicator light circuit | ||
| Hybrid vehicle control ECU | ||
| Cannot set cruise control (cruise control indicator illuminates when cruise control main switch is on, but turns off when cruise control is set) | Cruise control switch circuit | |
| Hybrid vehicle control ECU | ||
| Cannot set cruise control (cruise control indicator stays illuminated) | CAN communication system | |
| Electronically controlled brake system | ||
| Hybrid control system | ||
| Cruise control switch circuit | ||
| Stop light switch circuit | ||
| Integration Control & Panel Assembly | ||
| Combination meter assembly | ||
| Hybrid vehicle control ECU | ||
| When cruising, cruise control cancels (cruise control indicator stays illuminated) | CAN communication system | |
| Electronically controlled brake system | ||
| Hybrid control system | ||
| Cruise control switch circuit | ||
| Stop light switch circuit | ||
| Integration Control & Panel Assembly | ||
| Hybrid vehicle control ECU | ||
| Hunting (vehicle speed does not stabilize) | Hybrid control system | |
| SFI system (w/ EGR System) | ||
| SFI system (w/o EGR System) | ||
| Hybrid vehicle control ECU | ||
| Cannot cancel by CANCEL switch operation | Cruise control switch circuit | |
| Hybrid vehicle control ECU | ||
| Cannot cancel by vehicle speed (low speed limit) | Electronically controlled brake system | |
| Hybrid vehicle control ECU | ||
| Cannot cancel by shift lever operation | Hybrid control system | |
| Hybrid vehicle control ECU | ||
| Cannot cancel by brake operation | Stop light switch circuit | |
| Hybrid vehicle control ECU |