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 | See page |
---|---|---|
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 | ||
CAN communication system | ||
ECM (for 6AR-FSE) | ||
ECM (for 2AR-FE) | ||
ECM (for 2GR-FE) | ||
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 out when the cruise control switch is pushed to -/SET) | Cruise control switch circuit | |
ECM (for 6AR-FSE) | ||
ECM (for 2AR-FE) | ||
ECM (for 2GR-FE) | ||
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 (for 6AR-FSE) | |
Stop light switch circuit (for 2AR-FE, 2GR-FE) | ||
Vehicle speed sensor circuit (for 6AR-FSE) | ||
Vehicle speed sensor circuit (for 2AR-FE, 2GR-FE) | ||
Cruise control switch circuit | ||
Transmission control switch circuit (for U760E) | ||
Transmission control switch circuit (for U761E) | ||
Transmission control switch circuit (for U660E) | ||
Combination meter assembly | ||
ECM (for 6AR-FSE) | ||
ECM (for 2AR-FE) | ||
ECM (for 2GR-FE) | ||
Vehicle speed control by the cruise control system is automatically canceled after it has started | Stop light switch circuit (for 6AR-FSE) | |
Stop light switch circuit (for 2AR-FE, 2GR-FE) | ||
Transmission control switch circuit (for U760E) | ||
Transmission control switch circuit (for U761E) | ||
Transmission control switch circuit (for U660E) | ||
Cruise control switch circuit | ||
Vehicle speed sensor circuit (for 6AR-FSE) | ||
Vehicle speed sensor circuit (for 2AR-FE, 2GR-FE) | ||
Combination meter assembly | ||
ECM (for 6AR-FSE) | ||
ECM (for 2AR-FE) | ||
ECM (for 2GR-FE) | ||
Pulling back on the cruise control switch does not cancel vehicle speed control by the cruise control system (The cruise control SET indicator remains illuminate) | Cruise control switch circuit | |
Combination meter assembly | ||
CAN communication system | ||
ECM (for 6AR-FSE) | ||
ECM (for 2AR-FE) | ||
ECM (for 2GR-FE) | ||
Pulling back on the cruise control switch does not cancel vehicle speed control by the cruise control system (The cruise control SET indicator goes out) | ECM (for 2AR-FE) | |
ECM (for 6AR-FSE) | ||
ECM (for 2GR-FE) | ||
Vehicle speed control by the cruise control system is not canceled when vehicle speed drops below the low speed limit (The cruise control SET indicator remains illuminated) | Vehicle speed sensor circuit (for 6AR-FSE) | |
Vehicle speed sensor circuit (for 2AR-FE, 2GR-FE) | ||
ECM (for 6AR-FSE) | ||
ECM (for 2AR-FE) | ||
ECM (for 2GR-FE) | ||
Vehicle speed control by the cruise control system is not canceled when vehicle speed drops below the low speed limit (The cruise control SET indicator goes out) | ECM (for 2AR-FE) | |
ECM (for 6AR-FSE) | ||
ECM (for 2GR-FE) | ||
Depressing the brake pedal does not cancel vehicle speed control by the cruise control system (The cruise control SET indicator remains illuminated) | Stop light switch circuit (for 6AR-FSE) | |
Stop light switch circuit (for 2AR-FE, 2GR-FE) | ||
Combination meter assembly | ||
ECM (for 6AR-FSE) | ||
ECM (for 2AR-FE) | ||
ECM (for 2GR-FE) | ||
Depressing the brake pedal does not cancel vehicle speed control by the cruise control system (The cruise control SET indicator goes out) | ECM (for 2AR-FE) | |
ECM (for 6AR-FSE) | ||
ECM (for 2GR-FE) | ||
Moving the shift lever does not cancel vehicle speed control by the cruise control system (The cruise control indicator SET light remains illuminated) | Transmission control switch circuit (for U760E) | |
Transmission control switch circuit (for U761E) | ||
Transmission control switch circuit (for U660E) | ||
Combination meter assembly | ||
ECM (for 6AR-FSE) | ||
ECM (for 2AR-FE) | ||
ECM (for 2GR-FE) | ||
Moving the shift lever does not cancel vehicle speed control by the cruise control system (The cruise control indicator SET light goes out) | ECM (for 2AR-FE) | |
ECM (for 6AR-FSE) | ||
ECM (for 2GR-FE) | ||
Vehicle speed control by the cruise control system is not canceled when shift paddle switch is operated. (The cruise control SET indicator remains illuminated)* | Shift paddle switch circuit | |
Combination meter assembly | ||
ECM (for 2AR-FE) | ||
Vehicle speed control by the cruise control system is not canceled when shift paddle switch is operated. (The cruise control SET indicator goes out)* | ECM (for 2AR-FE) | |
Hunting (Speed is not constant) | Vehicle speed sensor circuit (for 6AR-FSE) | |
Vehicle speed sensor circuit (for 2AR-FE, 2GR-FE) | ||
SFI system (for 6AR-FSE) | ||
SFI system (for 2AR-FE) | ||
SFI system (for 2GR-FE) | ||
The cruise control indicator remains blinking | TC and CG terminal circuit | |
Combination meter assembly | ||
ECM (for 6AR-FSE) | ||
ECM (for 2AR-FE) | ||
ECM (for 2GR-FE) | ||
The cruise control SET indicator does not illuminate (Vehicle speed can be set) | Cruise SET indicator light circuit | |
Combination meter assembly | ||
ECM (for 6AR-FSE) | ||
ECM (for 2AR-FE) | ||
ECM (for 2GR-FE) |
*: w/ Shift Paddle Switch