Problem Symptoms Table [08/2015 - 08/2019]

HINT:

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.
When open circuit indication is displayed during the self-check function, check for DTCs and troubleshoot according to each inspection procedure.

GENERAL

Symptom	Suspected Area	Refer To
System does not operate at all (self-check function does not operate)	Proceed to "Clearance Warning ECU Power Source Circuit"	Refer to Clearance Warning ECU Power Source Circuit [08/2015 - 08/2019]
	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]
System cannot be turned off	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]

SONAR FUNCTION

Symptom	Suspected Area	Refer To
Frozen indication is displayed in self-check function	Refer to Precaution	Refer to PRECAUTION [08/2015 - ]
	Replace ultrasonic sensor in part where frozen indication is displayed	-
	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]
Combination meter assembly (shift indicator) operates normally, but detection operates when shift lever is in P, or detection does not operate when shift lever is in any position except P (front corner ultrasonic sensor)	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]
Combination meter assembly (shift indicator) operates normally, but detection operates when shift lever is in P or R, or detection does not operate when shift lever is in any position except P or R (front center ultrasonic sensor)	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]
Combination meter assembly (shift indicator) operates normally, but detection operates when shift lever is in any position except R, or does not operate with the shift lever in R (rear ultrasonic sensor)	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]
Detection operation operates even when vehicle speed exceeds operation condition speed	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]

BUZZER FUNCTION

Symptom	Suspected Area	Refer To
Sonar detection operation is normal but buzzer operation is intermittent	Proceed to "Clearance Warning Buzzer Circuit"	Refer to Clearance Warning Buzzer Circuit [08/2015 - 08/2019]
	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]

DISPLAY FUNCTION

Symptom	Suspected Area	Refer To
Detection operation is normal but clearance sonar indicator does not illuminate	Combination meter assembly (Active Test)	Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2017] , or refer to DATA LIST / ACTIVE TEST [08/2017 - 08/2019]
	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]
Detection operation is normal but no sonar displays appear	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]
Detection operation is normal but sonar displays of multi-information display do not appear	Replace combination meter assembly	Refer to REMOVAL [08/2015 - 08/2019]
	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]
Detection operation is normal but sonar displays of multi-display do not appear	Replace multi-display assembly
	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]

SWITCH FUNCTION

Symptom	Suspected Area	Refer To
Clearance sonar main switch does not operate	Proceed to "B2660"	Refer to DTC B2660: Steering Wheel Switch Malfunction [08/2015 - 08/2019]
	Proceed to "Main Switch Circuit"	Refer to Main Switch Circuit [08/2015 - 08/2019]
	Replace clearance warning ECU	Refer to REMOVAL [08/2015 - 08/2019]