Problem Symptoms Table

HINT:

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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

DYNAMIC RADAR CRUISE CONTROL SYSTEM

Symptom	Suspected Area	See
Vehicle-to-vehicle distance cannot be changed with distance control switch	Steering pad switch with modulator	Refer to REMOVAL - Step 12
	Steering pad ECU	-
	Driving support ECU	Refer to REMOVAL
System cannot be changed to constant speed mode	Cruise control switch circuit	Refer to Cruise Control Switch Circuit
	Skid control ECU	Refer to REMOVAL
	Shift lever position sensor	Refer to INSPECTION
	Stop light switch circuit	Refer to DTC C1A05: Stop Light Switch Circuit
	CAN communication system	Refer to CAN COMMUNICATION SYSTEM
	Hybrid vehicle control ECU	Refer to REMOVAL
	Driving support ECU	Refer to REMOVAL
System cannot be changed to vehicle-to-vehicle distance control mode	Front millimeter wave radar sensor	Refer to REMOVAL
	Cruise control switch circuit	Refer to Cruise Control Switch Circuit
	Skid control ECU	Refer to REMOVAL
	Shift lever position sensor	Refer to INSPECTION
	Windshield wiper switch	Refer to REMOVAL
	Stop light switch circuit	Refer to DTC C1A05: Stop Light Switch Circuit
	CAN communication system	Refer to CAN COMMUNICATION SYSTEM
	Hybrid vehicle control ECU	Refer to REMOVAL
	Driving support ECU	Refer to REMOVAL
During constant speed mode operation, system is canceled	Cruise control switch circuit	Refer to Cruise Control Switch Circuit
	Skid control ECU	Refer to REMOVAL
	Shift lever position sensor	Refer to INSPECTION
	Stop light switch circuit	Refer to DTC C1A05: Stop Light Switch Circuit
	CAN communication system	Refer to CAN COMMUNICATION SYSTEM
	Hybrid vehicle control ECU	Refer to REMOVAL
	Driving support ECU	Refer to REMOVAL
During vehicle-to-vehicle distance control mode operation, system is canceled	Front millimeter wave radar sensor	Refer to REMOVAL
	Cruise control switch circuit	Refer to Cruise Control Switch Circuit
	Skid control ECU	Refer to REMOVAL
	Shift lever position sensor	Refer to INSPECTION
	Windshield wiper switch	Refer to REMOVAL
	Stop light switch circuit	Refer to DTC C1A05: Stop Light Switch Circuit
	CAN communication system	Refer to CAN COMMUNICATION SYSTEM
	Hybrid vehicle control ECU	Refer to REMOVAL
	Driving support ECU	Refer to REMOVAL
During constant speed mode operation, hunting occurs	Skid control ECU	Refer to REMOVAL
	CAN communication system	Refer to CAN COMMUNICATION SYSTEM
	Hybrid vehicle control ECU	Refer to REMOVAL
	Driving support ECU	Refer to REMOVAL
During vehicle-to-vehicle distance control mode operation, hunting occurs	Front millimeter wave radar sensor	Refer to REMOVAL
	Skid control ECU	Refer to REMOVAL
	CAN communication system	Refer to CAN COMMUNICATION SYSTEM
	Hybrid vehicle control ECU	Refer to REMOVAL
	Driving support ECU	Refer to REMOVAL
Shift lever cancel operation does not operate	Shift lever position sensor	Refer to INSPECTION
	Hybrid vehicle control ECU	Refer to REMOVAL
	CAN communication system	Refer to CAN COMMUNICATION SYSTEM
	Driving support ECU	Refer to REMOVAL
Low speed limit cancel operation does not operate	Skid control ECU	Refer to REMOVAL
	CAN communication system	Refer to CAN COMMUNICATION SYSTEM
	Driving support ECU	Refer to REMOVAL
During vehicle-to-vehicle distance control mode, wiper cancel operation does not operate	Windshield wiper switch	Refer to REMOVAL
	CAN communication system	Refer to CAN COMMUNICATION SYSTEM
	Driving support ECU	Refer to REMOVAL
Even though front millimeter wave radar sensor is not dirty, "CLEAN RADAR SENSOR" is displayed	Adjust front millimeter wave radar sensor	Refer to ADJUSTMENT
	Front millimeter wave radar sensor radiator grille is dirty	-