Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
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.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Intuitive parking assist system
INTUITIVE PARKING ASSIST SYSTEM - PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| System does not operate at all (Initial check function also does not operate) | Clearance warning ECU power source circuit | CLEARANCE WARNING ECU POWER SOURCE CIRCUIT |
| Clearance warning ECU | TERMINALS OF ECU | |
| Clearance warning indicator indicates front clearance sonar sensor is frozen | Clean the sensor surface | INTUITIVE PARKING ASSIST SYSTEM |
| Front clearance sonar sensor LH circuit | FRONT CLEARANCE SONAR SENSOR LH CIRCUIT | |
| Front clearance sonar sensor RH circuit | FRONT CLEARANCE SONAR SENSOR RH CIRCUIT | |
| Clearance warning ECU | TERMINALS OF ECU | |
| Clearance warning indicator indicates rear clearance sonar sensor is frozen | Clean the sensor surface | INTUITIVE PARKING ASSIST SYSTEM |
| Rear clearance sonar sensor LH circuit | REAR CLEARANCE SONAR SENSOR LH CIRCUIT | |
| Rear clearance sonar sensor RH circuit | REAR CLEARANCE SONAR SENSOR RH CIRCUIT | |
| Clearance warning ECU | TERMINALS OF ECU | |
| Clearance warning indicator indicates back sonar sensor is frozen | Clean the sensor surface | INTUITIVE PARKING ASSIST SYSTEM |
| Back sonar sensor LH circuit | BACK SONAR SENSOR LH CIRCUIT | |
| Back sonar sensor RH circuit | BACK SONAR SENSOR RH CIRCUIT | |
| Clearance warning ECU | TERMINALS OF ECU | |
| Clearance warning indicator indicates open in rear clearance sonar sensor circuit | Rear clearance sonar sensor RH circuit | REAR CLEARANCE SONAR SENSOR RH CIRCUIT |
| Back sonar sensor RH circuit | BACK SONAR SENSOR RH CIRCUIT | |
| Back sonar sensor LH circuit | BACK SONAR SENSOR LH CIRCUIT | |
| Rear clearance sonar sensor LH circuit | REAR CLEARANCE SONAR SENSOR LH CIRCUIT | |
| Clearance warning ECU | TERMINALS OF ECU | |
| Clearance warning indicator indicates open in front clearance sonar sensor circuit | Front clearance sonar sensor LH circuit | FRONT CLEARANCE SONAR SENSOR LH CIRCUIT |
| Front clearance sonar sensor RH circuit | FRONT CLEARANCE SONAR SENSOR RH CIRCUIT | |
| Clearance warning ECU | TERMINALS OF ECU | |
| System operates even when vehicle speed is 10 km/h (6.2 mph) or more | Vehicle speed signal circuit | VEHICLE SPEED SIGNAL CIRCUIT |
| Clearance warning ECU | TERMINALS OF ECU | |
| Although system operates, indicator does not illuminate | Indicator circuit | INDICATOR CIRCUIT |
| Clearance warning ECU | TERMINALS OF ECU | |
| Indicator does not dim at night, or illuminates dimly during daytime | Taillight circuit | TAILLIGHT RELAY CIRCUIT |
| Clearance warning ECU | TERMINALS OF ECU | |
| Although system operates, clearance warning buzzer does not sound | Clearance warning buzzer circuit | CLEARANCE WARNING BUZZER CIRCUIT |
| Clearance warning ECU | TERMINALS OF ECU | |
| Clearance warning buzzer volume is low | Adjust volume | ADJUSTMENT |
| Rear corner and back sonar operates when shift lever is not in R, or does not operate even when shift lever is in R | Park / Neutral position switch circuit | PARK / NEUTRAL POSITION SWITCH CIRCUIT |
| Clearance warning ECU | TERMINALS OF ECU |