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Problem Symptoms Table

HINT:

Use the table below to help determine the cause of the problem symptom. 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.

General 

PROBLEM SYMPTOMS CHART - GENERAL

Symptom Suspected Area See
System does not operate at all (self-check function does not operate) Clearance warning ECU power source circuit*1 CLEARANCE WARNING ECU POWER SOURCE CIRCUIT 
Parking assist ECU power source circuit*2 ECU POWER SOURCE CIRCUIT 
Clearance sonar main switch circuit CLEARANCE SONAR MAIN SWITCH CIRCUIT 
CAN communication system CAN COMMUNICATION SYSTEM
Clearance warning ECU*1 REMOVAL 
Parking assist ECU*2 REMOVAL 
Outer mirror switch REMOVAL
ECU does not operate, when clearance sonar main switch is turned to ON or OFF Read value using Techstream (EEPROM) DATA LIST/ACTIVE TEST 
Clearance warning ECU*1 REMOVAL 
Parking Assist ECU*2 REMOVAL 

Sonar function 

PROBLEM SYMPTOMS CHART - SONAR FUNCTION

Symptom Suspected Area See
Freeze condition is displayed as a result of self-check Remove ice, mud or snow from the ultrasonic sensor -
Open circuit in front sensors is displayed as a result of self-check (w/o advanced parking guidance system) Front left side sensor malfunction DTC C1AE0 FRONT LEFT SIDE SENSOR 
Front left sensor malfunction DTC C1AE1 FRONT LEFT SENSOR MALFUNCTION 
Front left center sensor malfunction DTC C1AE2 FRONT LEFT CENTER SENSOR 
Front right center sensor malfunction DTC C1AE3 FRONT RIGHT CENTER SENSOR 
Front right sensor malfunction DTC C1AE4 FRONT RIGHT SENSOR MALFUNCTION 
Front right side sensor malfunction DTC C1AE5 FRONT RIGHT SIDE SENSOR 
Clearance warning ECU REMOVAL 
Open circuit in front sensors is displayed as a result of self-check (w/ advanced parking guidance system) Front left sensor malfunction DTC C1AE1 FRONT LEFT SENSOR MALFUNCTION 
Front left center sensor malfunction DTC C1AE2 FRONT LEFT CENTER SENSOR 
Front right center sensor malfunction DTC C1AE3 FRONT RIGHT CENTER SENSOR 
Front right sensor malfunction DTC C1AE4 FRONT RIGHT SENSOR MALFUNCTION 
Front left side sensor malfunction DTC C1AE0 FRONT LEFT SIDE SENSOR 
Front right side sensor malfunction DTC C1AE5 FRONT RIGHT SIDE SENSOR 
Parking assist ECU REMOVAL 
Open circuit in rear sensors is displayed as a result of self-check Rear right sensor malfunction DTC C1AE9 REAR RIGHT SENSOR MALFUNCTION 
Rear right center sensor malfunction DTC C1AE8 REAR RIGHT CENTER SENSOR MALFUNCTION 
Rear left center sensor malfunction DTC C1AE7 REAR LEFT CENTER SENSOR MALFUNCTION 
Rear left sensor malfunction DTC C1AE6 REAR LEFT SENSOR MALFUNCTION 
Clearance warning ECU*1 REMOVAL 
Parking assist ECU*2 REMOVAL 
Detection operation operates even when vehicle speed is over 13 km/h (8 mph) CAN communication system CAN COMMUNICATION SYSTEM
Clearance warning ECU*1 REMOVAL 
Parking assist ECU*2 REMOVAL 

Display function 

PROBLEM SYMPTOMS CHART - DISPLAY FUNCTION

Symptom Suspected Area See
Detection operation is normal but sonar displays do not appear on multi-information display CAN communication system CAN COMMUNICATION SYSTEM
Clearance warning ECU*1 REMOVAL 
Parking assist ECU*2 REMOVAL 
Combination meter REMOVAL
Detection operation is normal but sonar displays do not appear on multi-display CAN communication system CAN COMMUNICATION SYSTEM
Clearance warning ECU*1 REMOVAL 
Parking assist ECU*2 REMOVAL 
Multi-display REMOVAL
Display and navigation assembly REMOVAL
Detection operation is normal but clearance sonar main switch indicator does not illuminate CAN communication system CAN COMMUNICATION SYSTEM
Clearance warning ECU*1 REMOVAL 
Parking assist ECU*2 REMOVAL 
Outer mirror switch REMOVAL

Buzzer function 

PROBLEM SYMPTOMS CHART - BUZZER FUNCTION

Symptom Suspected Area See
Detection operation is normal but buzzer operation is intermittent Front clearance warning buzzer circuit NO. 1 CLEARANCE WARNING BUZZER CIRCUIT 
Rear clearance warning buzzer circuit NO. 2 CLEARANCE WARNING BUZZER CIRCUIT 
Clearance warning ECU*1 CLEARANCE WARNING ECU (W/O ADVANCED PARKING GUIDANCE SYSTEM) 
Parking assist ECU*2 PARKING ASSIST ECU (W/ ADVANCED PARKING GUIDANCE SYSTEM) 
HINT:
*1: w/o Advanced parking guidance system
*2: w/ Advanced parking guidance system