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 switch (ON/OFF button). | Cruise control switch circuit | |
| Cruise main indicator circuit | ||
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Vehicle speed cannot be set (the cruise control indicator illuminates when the cruise control system is turned on using the cruise control switch (ON/OFF button), but the cruise control indicator goes off when the cruise control switch is pushed to -/SET). | Cruise control switch circuit | |
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Vehicle speed cannot be set (the cruise control indicator illuminates when the cruise control system is turned on using the cruise control switch (ON/OFF button), and it remains illuminated when the cruise control switch is pushed to -/SET). | Stop light switch circuit | |
| Vehicle speed sensor circuit | ||
| Cruise control switch circuit | ||
| Transmission control switch circuit (for A960E) | ||
| Transmission control switch circuit (for AA81E) | ||
| Combination meter assembly | ||
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Vehicle speed control by the cruise control system is automatically canceled after it has started. | Stop light switch circuit | |
| Transmission control switch circuit (for A960E) | ||
| Transmission control switch circuit (for AA81E) | ||
| Cruise control switch circuit | ||
| Vehicle speed sensor circuit | ||
| Combination meter assembly | ||
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Pulling back on the cruise control switch does not cancel vehicle speed control by the cruise control system. (The cruise control indicator remains illuminated.) | Cruise control switch circuit | |
| Combination meter assembly | ||
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Pulling back on the cruise control switch does not cancel vehicle speed control by the cruise control system. (The cruise control indicator goes off.) | ECM (for 2GR-FSE) | |
| ECM (for 4GR-FSE) | ||
| Vehicle speed control by the cruise control system is not canceled when vehicle speed drops below the low speed limit. (The cruise control indicator remains illuminated.) | Vehicle speed sensor circuit | |
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Vehicle speed control by the cruise control system is not canceled when vehicle speed drops below the low speed limit. (The cruise control indicator goes off.) | ECM (for 2GR-FSE) | |
| ECM (for 4GR-FSE) | ||
| Depressing the brake pedal does not cancel vehicle speed control by the cruise control system. (The cruise control indicator remains illuminated.) | Stop light switch circuit | |
| Combination meter assembly | ||
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Depressing the brake pedal does not cancel vehicle speed control by the cruise control system. (The cruise control indicator goes off.) | ECM (for 2GR-FSE) | |
| ECM (for 4GR-FSE) | ||
| Moving the shift lever does not cancel vehicle speed control by the cruise control system. (The cruise control indicator remains illuminated.) | Stop light switch circuit | |
| Transmission control switch circuit (for A960E) | ||
| Transmission control switch circuit (for AA81E) | ||
| Combination meter assembly | ||
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Moving the shift lever does not cancel vehicle speed control by the cruise control system. (The cruise control indicator goes off.) | ECM (for 2GR-FSE) | |
| ECM (for 4GR-FSE) | ||
| Vehicle speed control by the cruise control system is not canceled when paddle shift switch is operated. (The cruise control indicator remains illuminated.) | Shift paddle switch circuit (for A960E) | |
| Shift paddle switch circuit (for AA81E) | ||
| Combination meter assembly | ||
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Vehicle speed control by the cruise control system is not canceled when paddle shift switch is operated. (The cruise control indicator goes off.) | ECM (for 2GR-FSE) | |
| ECM (for 4GR-FSE) | ||
| Hunting (Speed is not constant.) | Vehicle speed sensor circuit | |
| SFI system (for 2GR-FSE) | ||
| SFI system (for 4GR-FSE (w/ Canister Pump Module)) | ||
| SFI system (for 4GR-FSE (w/o Canister Pump Module)) | ||
| The cruise control indicator remains blinking. | TC and CG terminal circuit | |
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| The cruise control SET indicator does not illuminate. (Vehicle speed can be set) | Cruise SET indicator circuit | |
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) |