DYNAMIC RADAR CRUISE CONTROL SYSTEM PROBLEM SYMPTOMS TABLE

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.

Dynamic Radar Cruise Control System
Symptom	Suspected Area	See page
Vehicle-to-vehicle distance cannot be changed with distance control switch	Distance control switch circuit	Click here
	Driving support ECU (for LHD)	Click here
	Driving support ECU (for RHD)	Click here
System cannot be changed to constant speed mode	Cruise control switch circuit	Click here
	Park/neutral position switch	Click here
	Stop light switch circuit	Click here
	CAN communication system	Click here
	ECM	Click here
	Driving support ECU (for LHD)	Click here
	Driving support ECU (for RHD)	Click here
System cannot be changed to vehicle-to-vehicle distance control mode	Millimeter wave radar sensor power source circuit	Click here
	Millimeter wave radar sensor	Click here
	Cruise control switch circuit	Click here
	Park/neutral position switch	Click here
	Windshield wiper switch circuit	Click here
	Stop light switch circuit	Click here
	CAN communication system	Click here
	ECM	Click here
	Driving support ECU (for LHD)	Click here
	Driving support ECU (for RHD)	Click here
During constant speed mode operation, system operation is canceled	Cruise control switch circuit	Click here
	Park/neutral position switch	Click here
	Stop light switch circuit	Click here
	CAN communication system	Click here
	ECM	Click here
	Driving support ECU (for LHD)	Click here
	Driving support ECU (for RHD)	Click here
During vehicle-to-vehicle distance control mode operation, system operation is canceled	Millimeter wave radar sensor power source circuit	Click here
	Millimeter wave radar sensor	Click here
	Cruise control switch circuit	Click here
	Park/neutral position switch	Click here
	Windshield wiper switch circuit	Click here
	Stop light switch circuit	Click here
	CAN communication system	Click here
	ECM	Click here
	Driving support ECU (for LHD)	Click here
	Driving support ECU (for RHD)	Click here
Shift lever cancel operation does not operate	Park/neutral position switch	Click here
	CAN communication system	Click here
	ECM	Click here
	Driving support ECU (for LHD)	Click here
	Driving support ECU (for RHD)	Click here
Low speed limit cancel operation does not operate	CAN communication system	Click here
	ECM	Click here
	Driving support ECU (for LHD)	Click here
	Driving support ECU (for RHD)	Click here
During vehicle-to-vehicle distance control mode, wiper cancel operation does not operate	Windshield wiper switch circuit	Click here
	CAN communication system	Click here
	Driving support ECU (for LHD)	Click here
	Driving support ECU (for RHD)	Click here
Even though millimeter wave radar sensor is not dirty, "CLEAN RADAR SENSOR" is displayed	Millimeter wave radar sensor radiator grille is dirty	-