DYNAMIC RADAR CRUISE CONTROL SYSTEM PROBLEM SYMPTOMS TABLE

Tip:

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.

Table 1. Dynamic Radar Cruise Control System
Symptom	Suspected Area	Link
Cruise control switch cannot be turned on (Cruise control indicator in combination meter assembly does not illuminate)	Cruise control switch circuit	Click here
	Driving support ECU power source circuit	Click here
	Cruise control indicator light circuit	Click here
	CAN communication system	Click here
	Combination meter assembly	Click here
	ECM	Click here
	Driving support ECU	Click here
Vehicle-to-vehicle distance cannot be changed with distance control switch	Distance control switch circuit	Click here
	Driving support ECU	Click here
System cannot be changed to constant speed mode	Cruise control switch circuit	Click here
	CAN communication system	Click here
	ECM	Click here
	Combination meter assembly	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 assembly	Click here
	Cruise control switch circuit	Click here
	CAN communication system	Click here
	ECM	Click here
	Driving support ECU	Click here
	Combination meter assembly	Click here
During constant speed mode operation, system operation is canceled	Cruise control switch circuit	Click here
	Park/neutral position switch assembly	Click here
	Stop light switch circuit	Click here
	CAN communication system	Click here
	ECM	Click here
	Driving support ECU	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 assembly	Click here
	Cruise control switch circuit	Click here
	Park/neutral position switch assembly	Click here
	Wiper signal circuit	Click here
	Stop light switch circuit	Click here
	CAN communication system	Click here
	ECM	Click here
Shift lever cancel operation does not operate	Park/neutral position switch assembly	Click here
	CAN communication system	Click here
	ECM	Click here
	Driving support ECU	Click here
Low speed limit cancel operation does not operate	CAN communication system	Click here
	ECM	Click here
	Driving support ECU	Click here
During vehicle-to-vehicle distance control mode, wiper cancel operation does not operate	Wiper signal circuit	Click here
	CAN communication system	Click here
	ECM	Click here
	Driving support ECU	Click here
Even though millimeter wave radar sensor is not dirty, "CLEAN RADAR SENSOR" is displayed	Millimeter wave radar sensor radiator grille is dirty	-
	Combination meter assembly	Click here
	CAN communication system	Click here
	Driving support ECU	Click here
	ECM	Click here
No information on multi-information display	Combination meter assembly	Click here
	CAN communication system	Click here
	Driving support ECU	Click here
	ECM	Click here
Beam axis of millimeter wave radar sensor assembly cannot be adjusted	Check installation millimeter wave radar sensor assembly	Click here
	Millimeter wave radar sensor assembly	Click here
	Driving support ECU	Click here
Alarm buzzer does not sound	Skid control buzzer circuit	Click here
	Millimeter wave radar sensor assembly	Click here
	ECM	Click here
	Driving support ECU	Click here
No brake control (When decelerating)	Vehicle stability control system	Click here
	ECM	Click here
	Driving support ECU	Click here
Cruise control SET indicator light does not come on (SET function operates normally)	Cruise control SET indicator light	Click here
	Combination meter assembly	Click here
	CAN communication system	Click here
	ECM	Click here