Problem Symptoms Table
HINT:
- 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.
CRUISE CONTROL SYSTEM
| Symptom | Suspected Area | Reference |
|---|---|---|
| The cruise control main switch cannot be turned on. | Cruise control switch circuit | Refer to Cruise Control Switch Circuit |
| CRUISE main indicator light circuit | Refer to Cruise Main Indicator Light Circuit | |
| Hybrid vehicle control ECU | Refer to REMOVAL | |
| Vehicle speed setting cannot be performed. (The cruise main 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 | Refer to Cruise Control Switch Circuit |
| Hybrid vehicle control ECU | Refer to REMOVAL | |
| Vehicle speed setting cannot be performed. (The cruise main indicator light on the combination meter illuminates when the main switch is turned on, and remains illuminated when SET function is operating.) | Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit |
| Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor "A" | |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit | |
| Hybrid control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Hybrid vehicle control ECU | Refer to REMOVAL | |
| The cruise control is canceled while it is operating. | Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit |
| Hybrid control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Electronically controlled brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit | |
| Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor "A" | |
| Hybrid vehicle control ECU | Refer to REMOVAL | |
| Pulling back on the control main switch does not cancel the cruise control. (The cruise main indicator light remains on.) | Cruise control switch circuit | Refer to Cruise Control Switch Circuit |
| Hybrid vehicle control ECU | Refer to REMOVAL | |
| Pulling back on the control main switch does not cancel the cruise control. (The cruise main indicator light goes off.) | Hybrid vehicle control ECU | Refer to REMOVAL |
| The cruise control is not canceled when vehicle speed drops below the low speed limit. (The cruise main indicator light remains on.) | Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor "A" |
| Hybrid vehicle control ECU | Refer to REMOVAL | |
| The cruise control is not canceled when vehicle speed drops below the low speed limit. (The cruise main indicator light goes off.) | Hybrid vehicle control ECU | Refer to REMOVAL |
| Depressing the brake pedal does not cancel the cruise control. (The cruise main indicator light remains on.) | Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit |
| Hybrid vehicle control ECU | Refer to REMOVAL | |
| Depressing the brake pedal does not cancel the cruise control. (The cruise indicator main light goes off.) | Hybrid vehicle control ECU | Refer to REMOVAL |
| Moving the shift lever does not cancel the cruise control. (The cruise main indicator light remains on.) | Hybrid control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Hybrid vehicle control ECU | Refer to REMOVAL | |
| Moving the shift lever does not cancel the cruise control. (The cruise indicator main light goes off.) | Hybrid vehicle control ECU | Refer to REMOVAL |
| Hunting (Speed is not constant.) | Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor "A" |
| SFI system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Hybrid vehicle control ECU | Refer to REMOVAL | |
| The cruise main indicator light remains blinking. | TC and CG terminal circuit | Refer to TC and CG Terminal Circuit |
| Hybrid vehicle control ECU | Refer to REMOVAL | |
| The "SET" indicator does not come on. (SET function operates normally.) | Cruise SET indicator light circuit | Refer to Cruise SET Indicator Light Circuit |
| Hybrid vehicle control ECU | Refer to REMOVAL |