Inspection Procedure 4: One or more of the reversing sensor (corner sensor/back sensor) does not detect the obstacle.
Inspection Procedure 5: The reversing sensor indicator keeps flashing.


caution
  • Before replacing the ECU or sensor, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
  • When the illuminated licence plate is installed, the sensors may not operate because of noise from the plate. (When the ultrasonic noise is received, the bass toned buzzer sound continuously. When the ultrasonic noise stops, the normal operation will be resumed immediately.)

COMMENTS ON TROUBLE SYMPTOM


If one or more of the reversing sensors (corner sensor/back sensor) cannot detect obstacles, the wires and connectors, reversing sensors (corner sensor/back sensor), or the corner sensor/back sensor-ECU may have abnormalities. Also, if one or more of the sensors has an abnormality (open circuit, malfunction, etc.), the corner sensor/back sensor-ECU informs the abnormality by making the reversing sensor indicator flash.
note
  • If the corner sensor/back sensor-ECU detects an abnormality (open circuit, malfunction, etc.) with one or more of the sensors, it turns off the relevant sensor and sounds the high toned buzzer for 5 seconds. The reversing sensor indicator illuminates while the system is being operated until the relevant sensor returns to normal.
  • If ultrasonic noise is received with one or more of the sensor, the corner sensor/back sensor-ECU sounds the low toned buzzer continuously. When the ultrasonic noise is stopped, the sensor returns to normal. (The reversing sensor indicator does not flash.)

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. Check the reversing sensor (corner sensor/back sensor) for interference.


Q. Are there anything that interferes with the communication (things that generate radio waves such as magnets and an air-cleaning device that has a power plug) near the reversing sensor (corner sensor/back sensor)?

Move away or remove things that interfere with the communication (things that generate radio waves such as magnets and a air-cleaning device that has a power plug) near the reversing sensor (corner sensor/back sensor).

Go to Step 2

STEP 2. M.U.T.-III diagnosis code


Check if diagnosis code is set to the reversing sensor (corner sensor/back sensor).

Q. Is the diagnosis code set?

Refer to .

Go to Step 3.

STEP 3. Trouble symptom recheck


Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).

Replace the corner sensor/back sensor-ECU.