CLEARANCE SONAR SYSTEM PROBLEM SYMPTOMS TABLE

Tech Tips

Before performing verification listed in the table below, check the fuse and relay.
Check the circuits for each problem symptom in the order given in the table below, and proceed to the relevant page.

CLEARANCE SONAR SYSTEM:
Symptom	Suspected area	See page
Entirely inoperative (Self check does not function).	1. Clearance sonar main switch circuit	Click here
	2. Clearance warning indicator	Click here
	3. Clearance warning ECU	Click here
Only back sonar does not function (Self check functions normally).	1. Back sonar sensor LH circuit	Click here
	2. Back sonar sensor RH circuit	Click here
	3. Clearance warning ECU	Click here
Only clearance sonar does not function (Self check functions normally).	1. Front clearance sonar LH circuit	Click here
	2. Front clearance sonar RH circuit	Click here
	3. Rear clearance sonar LH circuit	Click here
	4. Rear clearance sonar RH circuit	Click here
	5. Clearance warning ECU	Click here
Although detection can be done, sometimes no buzzer sounds.	1. Clearance warning buzzer circuit	Click here
	2. Clearance warning indicator	Click here
	3. Clearance warning ECU	Click here
Although detection can be done, sometimes the indicator does not light.	1. Indicator circuit	Click here
	2. Clearance warning indicator	Click here
	3. Clearance warning ECU	Click here
"Disconnected" or "Frozen" is displayed during the self check.	1. Back sonar sensor LH circuit	Click here
	2. Back sonar sensor RH circuit	Click here
	3. Front clearance sonar LH circuit	Click here
	4. Front clearance sonar RH circuit	Click here
	5. Rear clearance sonar LH circuit	Click here
	6. Rear clearance sonar RH circuit	Click here
	7. Clearance warning ECU	Click here
	8. Sensor is wet or frozen	-
The system operates with the shift lever not in R position, or does not operate with the shift lever in R position (Back sonar and rear clearance sonar).	1. Reverse signal circuit	Click here
	2. Clearance warning ECU	Click here
Detection can be done although the vehicle speed is 10km/h (6 mph) or more.	1. Speed signal circuit	Click here
	2. Clearance warning ECU	Click here
Buzzer volume is too low.	1. Adjust buzzer volume	Click here