Problem Symptoms Table

PRE-COLLISION SYSTEM

Symptom	Suspected Area	See
System operates when the possibility of collision does not exist	1. Check if inoperative conditions of the system are met	DIAGNOSTIC TROUBLE CODE CHART
	2. Millimeter wave radar sensor	REMOVAL
	3. Distance control ECU	REMOVAL
System does not operate when the possibility of collision exists	1. Check if inoperative conditions of the system are met	DIAGNOSTIC TROUBLE CODE CHART
	2. Millimeter wave radar sensor	REMOVAL
	3. Distance control ECU	REMOVAL
Neither normal system code nor DTC is output	1. Power source circuit	POWER SOURCE CIRCUIT
System does not operate normally even when normal system code is output and DTCs are not output	1. Power source circuit	POWER SOURCE CIRCUIT