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 light circuit | ||
| ECM (for 1NR-FE) | ||
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| Vehicle speed cannot be set (the cruise control indicator illuminates in green when the cruise control system is turned on using the cruise control switch (ON-OFF button), but the cruise control indicator goes out when the cruise control switch is pushed to -/SET). | Cruise control switch circuit | |
| ECM (for 1NR-FE) | Click here | |
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| Vehicle speed cannot be set (the cruise control indicator illuminates in green 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 *1 | ||
| Clutch switch circuit*2 | ||
| Combination meter assembly | ||
| ECM (for 1NR-FE) | ||
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| Vehicle speed control by the cruise control system is automatically canceled after it has started. | Stop light switch circuit | |
| Transmission control switch circuit *1 | ||
| Clutch switch circuit*2 | ||
| Cruise control switch circuit | ||
| Vehicle speed sensor circuit | ||
| Combination meter assembly | ||
| ECM (for 1NR-FE) | ||
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| Pulling back on the cruise control switch does not cancel vehicle speed control by the cruise control system. (The cruise control indicator remains illuminated in green.) | Cruise control switch circuit | |
| Combination meter assembly | ||
| ECM (for 1NR-FE) | ||
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| Pulling back on the cruise control switch does not cancel vehicle speed control by the cruise control system. (The cruise control indicator goes out.) | ECM (for 1NR-FE) | |
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| 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 in green.) | Vehicle speed sensor circuit | |
| ECM (for 1NR-FE) | ||
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| 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 out.) | ECM (for 1NR-FE) | |
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| Depressing the brake pedal does not cancel vehicle speed control by the cruise control system. (The cruise control indicator remains illuminated in green.) | Stop light switch circuit | |
| Combination meter assembly | ||
| ECM (for 1NR-FE) | ||
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| Depressing the brake pedal does not cancel vehicle speed control by the cruise control system. (The cruise control indicator goes out.) | ECM (for 1NR-FE) | |
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| Moving the shift lever does not cancel vehicle speed control by the cruise control system. (The cruise control indicator remains illuminated in green.) | Stop light switch circuit | |
| Transmission control switch circuit *1 | ||
| Clutch switch circuit*2 | ||
| Combination meter assembly | ||
| ECM (for 1NR-FE) | ||
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| Moving the shift lever does not cancel vehicle speed control by the cruise control system. (The cruise control indicator goes out.) | ECM (for 1NR-FE) | |
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| Vehicle speed control by the cruise control system is not canceled when paddle shift switch is operated. (The cruise control indicator remains illuminated in green.)*3 | Shift paddle switch circuit | |
| Combination meter assembly | ||
| ECM (for 1ZR-FAE) | ||
| Vehicle speed control by the cruise control system is not canceled when paddle shift switch is operated. (The cruise control indicator goes out.)*3 | ECM (for 1ZR-FAE) | |
| Hunting (Speed is not constant.) | Vehicle speed sensor circuit | |
| SFI system (for 1NR-FE) | ||
| SFI system (for 1ZR-FAE) | ||
| ECD system (for 1AD-FTV) | ||
| The cruise control indicator (green) remains blinking. | TC and CG terminal circuit | |
| ECM (for 1NR-FE) | ||
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) | ||
| The cruise control SET indicator does not illuminate. (Vehicle speed can be set) | Cruise SET indicator circuit | |
| ECM (for 1NR-FE) | ||
| ECM (for 1ZR-FAE) | ||
| ECM (for 1AD-FTV) |
*1: for CVT
*2: for Manual Transaxle
*3: w/ Shift Paddle Switch