DYNAMIC RADAR CRUISE CONTROL SYSTEM > PROBLEM SYMPTOMS TABLE

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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.

Dynamic Radar Cruise Control System
Symptom	Suspected Area	See page
The cruise control switch (ON-OFF button) cannot be turned on.	Driving support ECU power source circuit	Click here
	Cruise control switch circuit	Click here
	Cruise main indicator light circuit	Click here
	Power management control ECU	Click here
	Driving support ECU	Click here
Setting cannot be changed between constant speed control mode and vehicle-to-vehicle distance control mode.	Cruise control switch circuit	Click here
	Combination meter assembly	Click here
	Driving support ECU	Click here
Set distance cannot be changed.	Distance control switch circuit	Click here
	Combination meter assembly	Click here
	Driving support ECU	Click here
Setting cannot be canceled in vehicle-to-vehicle distance control mode.	Combination meter assembly	Click here
	Millimeter wave radar sensor assembly	Click here
	Driving support ECU	Click here
Vehicle speed setting cannot be performed. (The cruise control indicator light on combination meter illuminates when the cruise control switch is turned on, but turns off when operating SET function.)	Cruise control switch circuit	Click here
	Driving support ECU	Click here
Vehicle speed setting cannot be performed with the constant speed mode. (The cruise control indicator light on combination meter illuminates when the cruise control switch is turned on, and remains on when operating SET function is operating.)	Stop light switch circuit	Click here
	Vehicle speed sensor circuit	Click here
	Cruise control switch circuit	Click here
	Hybrid control system	Click here
	Driving support ECU	Click here
Vehicle speed setting cannot be performed with the vehicle-to-vehicle distance control mode. (The cruise control indicator light on combination meter illuminates when cruise control switch is turned on, and remains on when SET function is operating.)	Millimeter wave radar sensor	Click here
	Stop light switch circuit	Click here
	Vehicle speed sensor circuit	Click here
	Cruise control switch circuit	Click here
	Hybrid control system	Click here
	Wiper signal circuit	Click here
	Electronically controlled brake system	Click here
While vehicle is driven with cruise control on, the control is canceled.	Stop light switch circuit	Click here
	Hybrid control system	Click here
	Electronically controlled brake system	Click here
	Cruise control switch circuit	Click here
	Vehicle speed sensor circuit	Click here
	Wiper signal circuit	Click here
	Driving support ECU	Click here
Pulling back on the cruise control switch does not cancel the cruise control. (The cruise control indicator light remains on.)	Cruise control switch circuit	Click here
	Driving support ECU	Click here
Pulling back on the control switch does not cancel the cruise control. (The cruise control indicator light goes off.)	Driving support ECU	Click here
The cruise control is not canceled when vehicle speed drops below the low speed limit. (The cruise control indicator light remains on.)	Vehicle speed sensor circuit	Click here
	Driving support ECU	Click here
The cruise control is not canceled when vehicle speed drops below the low speed limit. (The cruise control indicator light goes off.)	Hybrid control system	Click here
	Driving support ECU	Click here
Depressing the brake pedal does not cancel the cruise control. (The cruise control indicator light remains on.)	Stop light switch circuit	Click here
	Driving support ECU	Click here
Depressing the brake pedal does not cancel the cruise control. (The cruise control indicator light goes off.)	Driving support ECU	Click here
Vehicle speed cannot be canceled with wiper HI. (The cruise control indicator light remains on.)	Wiper signal circuit	Click here
	Driving support ECU	Click here
Vehicle speed cannot be canceled with wiper HI. (The cruise control indicator light goes off.)	Hybrid control system	Click here
	Driving support ECU	Click here
Moving the shift lever does not cancel the cruise control. (The cruise control indicator light remains on.)	Hybrid control system	Click here
	Driving support ECU	Click here
Moving the shift lever does not cancel the cruise control. (The cruise control indicator light goes off.)	Driving support ECU	Click here
Hunting (Speed is not constant.)	Millimeter wave radar sensor assembly	Click here
	Vehicle speed sensor circuit	Click here
	SFI system	Click here
	Hybrid control system	Click here
	Driving support ECU	Click here
Even though front millimeter wave radar sensor is not dirty, CLEAN RADAR SENSOR is displayed.	Millimeter wave radar sensor assembly is dirty	-
	Adjust front millimeter wave radar sensor assembly	Click here
	Millimeter wave radar sensor assembly	Click here
No information on the multi-information display	Combination meter assembly	Click here
Beam axis of millimeter wave radar sensor cannot be adjusted (completed).	Check position, distance and angle of reflector	Click here
	Check installation of millimeter wave radar sensor	Click here
	Millimeter wave radar sensor assembly	Click here
	Driving support ECU	Click here
Alarm buzzer does not sound.	Power management control ECU	Click here
	Skid control buzzer circuit	Click here
	Electronically controlled brake system	Click here
	Millimeter wave radar sensor assembly	Click here
	Driving support ECU	Click here
No brake control (when decelerating)	Combination meter	Click here
	Electronically controlled brake system	Click here
	Driving support ECU	Click here
"SET" is not displayed on the multi-information display. (SET function operates normally.)	Combination meter assembly	Click here
	Driving support ECU	Click here
The cruise control indicator light remains blinking.	TC and CG terminal circuit	Click here
The cruise control indicator light remains blinking.	Driving support ECU	Click here