PRE-COLLISION SYSTEM(for Stereo Camera Type) 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.
The pre-collision system uses the CAN communication system. First, confirm that there are no malfunction in the CAN communication system. Refer to How to Proceed with Troubleshooting.

Pre-Collision System
Symptom	Suspected Area	Link
"Pre-Collision System Unavailable" is displayed	Millimeter wave radar sensor assembly temperature malfunction	Click here
	Millimeter wave radar sensor assembly low voltage malfunction	Click here
	Object recognition camera temporarily unavailable	Click here
	Front side radar sensor RH temporarily unavailable	Click here
	Front side radar sensor LH temporarily unavailable	Click here
	Blind spot monitor sensor RH temporarily unavailable	Click here
	Blind spot monitor sensor LH temporarily unavailable	Click here
	Perform millimeter wave radar sensor assembly adjustment	Click here
	Millimeter wave radar sensor assembly	Click here
	Object recognition camera	Click here
	Front side radar sensor RH	Click here
	Front side radar sensor LH	Click here
	Blind spot monitor sensor RH	Click here
	Blind spot monitor sensor LH	Click here
	Driving support ECU assembly	Click here
"Pre-Collision System Unavailable Clean Sensor" is displayed	Foreign matter attached to millimeter wave radar sensor assembly	Click here
	Millimeter wave radar sensor assembly	Click here
	Driving support ECU assembly	Click here
"Front Camera Unavailable" is displayed	Object recognition camera temperature malfunction	Click here
	Object recognition camera low voltage malfunction	Click here
	Object recognition camera temporarily unavailable	Click here
	Object recognition camera	Click here
	Driving support ECU assembly	Click here
"Front Camera Unavailable Remove Debris On Windshield" is displayed	Foreign matter attached to object recognition camera or area of windshield in front of object recognition camera	Click here
	Object recognition camera	Click here
	Driving support ECU assembly	Click here
"Pre-Collision Seatbelt Unavailable" is displayed	Seat belt system	Click here
"VSC Turned Off Pre-Collision Brake System Unavailable" is displayed	Electronically controlled brake system	Click here
Pre-collision system cannot be canceled (PCS warning light does not illuminate)	Combination meter assembly (check if indicator illuminates using Active Test)	Click here
	Steering pad switch assembly	Click here
	Driving support ECU assembly	Click here
	Combination meter assembly	Click here