Note
Before replacing the ECM, refer to Service Bulletin.
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 (ON-OFF button) (The cruise control indicator does not illuminate) | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Cruise control indicator light circuit | ||
| Cruise control switch circuit | ||
| Combination meter assembly | ||
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FKS) | ||
| The cruise control SET indicator does not illuminate (Vehicle speed can be set) | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Cruise SET indicator light circuit | ||
| Combination meter assembly | ||
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FKS) | ||
| Vehicle speed cannot be set (The cruise control indicator illuminates when the cruise control system is turned on using the cruise control main switch (ON-OFF button), but the cruise control indicator turns off when the cruise control main switch is pushed to -/SET) | Cruise control switch circuit | |
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FKS) | ||
| Vehicle speed cannot be set (The cruise control indicator illuminates when the cruise control system is turned on using the cruise control main switch (ON-OFF button), and it remains illuminated when the cruise control main switch is pushed to -/SET) | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Vehicle stability control system | ||
| Continuously variable transaxle system (for 2AR-FE) | ||
| Automatic transaxle system (for 2GR-FKS) | ||
| Cruise control switch circuit | ||
| Stop light switch circuit | ||
| VSC OFF switch (Combination switch assembly) | ||
| Combination meter assembly | ||
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FKS) | ||
| Vehicle speed control by the cruise control system is automatically canceled after it has started | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Vehicle stability control system | ||
| Continuously variable transaxle system (for 2AR-FE) | ||
| Automatic transaxle system (for 2GR-FKS) | ||
| Cruise control switch circuit | ||
| Stop light switch circuit | ||
| VSC OFF switch (Combination switch assembly) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FKS) | ||
| Hunting (Speed is not constant) | Continuously variable transaxle system (for 2AR-FE) | |
| Automatic transaxle system (for 2GR-FKS) | ||
| SFI system (for 2AR-FE) | ||
| SFI system (for 2GR-FKS) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FKS) | ||
| Pulling back on the cruise control main switch does not cancel vehicle speed control by the cruise control system | Cruise control switch circuit | |
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FKS) | ||
| Vehicle speed control by the cruise control system is not canceled when vehicle speed drops below the low speed limit | Vehicle stability control system | |
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FKS) | ||
| Moving the shift lever does not cancel vehicle speed control by the cruise control system | Park/Neutral position switch assembly (for 2AR-FE) | |
| Park/Neutral position switch assembly (for 2GR-FKS) | ||
| Shift lock control unit assembly (for 2AR-FE) | ||
| Shift lock control unit assembly (for 2GR-FKS) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FKS) | ||
| Depressing the brake pedal does not cancel vehicle speed control by the cruise control system | Stop light switch circuit | |
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FKS) |