CRUISE CONTROL SYSTEM PROBLEM SYMPTOMS TABLE
Tech Tips
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Use the table below to help determine the cause of the problem symptom. 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.
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Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| The cruise control main switch cannot be turned on. | Cruise control switch circuit | |
| Cruise main indicator light circuit | ||
| No. 1 meter ECU sub-assembly | ||
| Meter display panel | ||
| ECM (for 1UR-FSE) | ||
| ECM (for 1UR-FE) | ||
| Vehicle speed cannot be set (the cruise control indicator light on the combination meter illuminates when the main switch is turned on, but turns off when SET function is operating). | Cruise control switch circuit | |
| ECM (for 1UR-FSE) | ||
| ECM (for 1UR-FE) | ||
| Vehicle speed cannot be set (the cruise control indicator light on the combination meter illuminates when the main switch is turned on, and remains illuminated when SET function is operating). | Cruise control switch circuit | |
| Stop light switch circuit | ||
| Electronically controlled brake system | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| No. 1 meter ECU sub-assembly | ||
| Meter display panel | ||
| ECM (for 1UR-FSE) | ||
| ECM (for 1UR-FE) | ||
| The cruise control is canceled while it is operating. | Cruise control switch circuit | |
| Stop light switch circuit | ||
| Electronically controlled brake system | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Transmission control switch circuit (for AA80F) | ||
| Transmission control switch circuit (for AA80E) | ||
| Skid control ECU (for LHD) | ||
| Skid control ECU (for RHD) | ||
| Park/neutral position sensor | ||
| No. 1 meter ECU sub-assembly | ||
| Meter display panel | ||
| ECM (for 1UR-FSE) | ||
| ECM (for 1UR-FE) | ||
| Pulling back on the control main switch does not cancel the cruise control. | Cruise control switch circuit | |
| ECM (for 1UR-FSE) | ||
| ECM (for 1UR-FE) | ||
| The cruise control is not canceled when vehicle speed drops below the low speed limit. | Electronically controlled brake system | |
| Skid control ECU (for LHD) | ||
| Skid control ECU (for RHD) | ||
| ECM (for 1UR-FSE) | ||
| ECM (for 1UR-FE) | ||
| Depressing the brake pedal does not cancel the cruise control. | Stop light switch circuit | |
| ECM (for 1UR-FSE) | ||
| ECM (for 1UR-FE) | ||
| Moving the shift lever does not cancel the cruise control. (The cruise control indicator light remains on.) | Automatic transmission system (for AA80F) | |
| Automatic transmission system (for AA80E) | ||
| Park/neutral position sensor (for AA80F) | ||
| Park/neutral position sensor (for AA80E) | ||
| Transmission floor shift assembly (for AA80F) | ||
| Transmission floor shift assembly (for AA80E) | ||
| ECM (for 1UR-FSE) | ||
| ECM (for 1UR-FE) | ||
| Operating the transmission shift switch does not cancel the cruise control. (w/ Shift Paddle Switch) | SFI system (for 1UR-FSE) | |
| SFI system (for 1UR-FE) | ||
| Shift paddle switch circuit | ||
| ECM | ||
| Hunting (Speed is not constant.) | SFI system (for 1UR-FSE) | |
| SFI system (for 1UR-FE) | ||
| Electronically controlled brake system | ||
| ECM (for 1UR-FSE) | ||
| ECM (for 1UR-FE) | ||
| Cruise set indicator light does not illuminate | Cruise SET indicator light circuit | |
| Cruise control switch circuit | ||
| No. 1 meter ECU sub-assembly | ||
| Meter display panel | ||
| ECM (for 1UR-FSE) | ||
| ECM (for 1UR-FE) | ||
| Cruise control cannot be canceled | Inspect VSC OFF switch | - |
| Both VSC and TRC are turned off | - |