Problem Symptoms Table
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.
GENERAL
| Symptom | Suspected Area | See |
|---|---|---|
| System does not operate at all (self-check function does not operate) | Clearance warning ECU power source circuit | Refer to Clearance Warning ECU Power Source Circuit |
| Clearance sonar main switch circuit | Refer to Clearance Sonar Main Switch Circuit | |
| Vehicle wire harness or connector (BEAN communication) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Clearance warning ECU | Refer to REMOVAL | |
| Satellite switch (clearance sonar main switch) | Refer to REMOVAL | |
| Combination meter assembly | Refer to REMOVAL |
SONAR FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Ultrasonic sensor (clearance sonar) does not operate (self-check function operates normally) | Front left sensor (ultrasonic sensor) malfunction | Refer to DTC B2232: Front Left Sensor Malfunction |
| Front right sensor (ultrasonic sensor) malfunction | Refer to DTC B2235: Front Right Sensor Malfunction | |
| Rear left sensor (ultrasonic sensor) malfunction | Refer to DTC B2237: Rear Left Sensor Malfunction | |
| Rear right sensor (ultrasonic sensor) malfunction | Refer to DTC B2241: Rear Right Sensor Malfunction | |
| Clearance warning ECU | Refer to REMOVAL | |
| Ultrasonic sensor (back sonar) does not operate (self-check function operates normally) | Rear left center sensor (ultrasonic sensor) malfunction | Refer to DTC B2238: Rear Left Center Sensor Malfunction |
| Rear right center sensor (ultrasonic sensor) malfunction | Refer to DTC B2239: Rear Right Center Sensor Malfunction | |
| Clearance warning ECU | Refer to REMOVAL | |
| Open circuit is displayed in self-check function | Front left sensor (ultrasonic sensor) malfunction | Refer to DTC B2232: Front Left Sensor Malfunction |
| Front right sensor (ultrasonic sensor) malfunction | Refer to DTC B2235: Front Right Sensor Malfunction | |
| Rear left sensor (ultrasonic sensor) malfunction | Refer to DTC B2237: Rear Left Sensor Malfunction | |
| Rear right sensor (ultrasonic sensor) malfunction | Refer to DTC B2241: Rear Right Sensor Malfunction | |
| Rear left center sensor (ultrasonic sensor) malfunction | Refer to DTC B2238: Rear Left Center Sensor Malfunction | |
| Rear right center sensor (ultrasonic sensor) malfunction | Refer to DTC B2239: Rear Right Center Sensor Malfunction | |
| Clearance warning ECU | Refer to REMOVAL | |
| Combination meter assembly (shift indicator) operates normally, but detection operates when shift lever in P, or detection does not operate when shift lever is not in P | Vehicle wire harness or connector (BEAN communication) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Clearance warning ECU | Refer to REMOVAL | |
| Combination meter assembly (speedometer) operates normally, but errors occur when vehicle speed exceeds 6 mph (10 km/h) | Vehicle wire harness or connector (BEAN communication) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Clearance warning ECU | Refer to REMOVAL | |
| Combination meter assembly | Refer to REMOVAL | |
| Combination meter assembly (shift indicator) operates normally, but detection operates when shift lever is not in R, or does not operate with the shift lever in R (rear ultrasonic sensor) | Vehicle wire harness or connector (BEAN communication) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Clearance warning ECU | Refer to REMOVAL | |
| Freeze condition is displayed in self-check function | Remove ice, mud or snow from the ultrasonic sensor | - |
BUZZER FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Sonar detection operation is normal but buzzer operation is intermittent | No. 1 clearance warning buzzer circuit | Refer to No. 1 Clearance Warning Buzzer Circuit |
| Clearance warning ECU | Refer to REMOVAL |
DISPLAY FUNCTION
| Symptom | Suspected Area | See |
|---|---|---|
| Detection operation is normal but sonar displays of multi-information display do not appear | Vehicle wire harness or connector (BEAN communication) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Clearance warning ECU | Refer to REMOVAL | |
| Combination meter assembly | Refer to REMOVAL | |
| Detection operation is normal but sonar displays of display and navigation module display do not appear*1 | Vehicle wire harness or connector (BEAN communication) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Clearance warning ECU | Refer to REMOVAL | |
| Display and navigation module display | Refer to REMOVAL |
*1: w/ Multi-display