Problem Symptoms Table [11/2017 - 01/2023]
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.
- The pre-collision system uses the CAN communication system. First, confirm that there are no malfunction in the CAN communication system. Refer to How to Proceed with Troubleshooting.
PRE-COLLISION SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| "Pre-Collision System Unavailable" is displayed | History of millimeter wave radar sensor assembly front beam misalignment (vertical)* | Refer to DATA LIST / ACTIVE TEST [11/2017 - 03/2019] , or refer to DATA LIST / ACTIVE TEST [03/2019 - 01/2023] |
| Perform millimeter wave radar sensor assembly adjustment | Refer to ADJUSTMENT [11/2017 - 03/2019] , or refer to ADJUSTMENT [03/2019 - 01/2023] | |
| Millimeter wave radar sensor assembly temperature malfunction | Refer to DATA LIST / ACTIVE TEST [11/2017 - 03/2019] , or refer to DATA LIST / ACTIVE TEST [03/2019 - 01/2023] | |
| Millimeter wave radar sensor assembly low voltage malfunction | Refer to DATA LIST / ACTIVE TEST [11/2017 - 03/2019] , or refer to DATA LIST / ACTIVE TEST [03/2019 - 01/2023] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [11/2017 - 01/2023] | |
| Combination meter assembly | Refer to REMOVAL [09/2014 - ] | |
| Driving support ECU assembly | Refer to REMOVAL [09/2014 - 01/2023] | |
| "Pre-Collision System Unavailable Clean Sensor" is displayed | Foreign matter attached to millimeter wave radar sensor assembly | - |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [11/2017 - 01/2023] | |
| Combination meter assembly | Refer to REMOVAL [09/2014 - ] | |
| Driving support ECU assembly | Refer to REMOVAL [09/2014 - 01/2023] | |
| "Front Camera Unavailable" is displayed | Check current condition of forward recognition camera based on related Data List items.
|
Refer to DATA LIST / ACTIVE TEST [11/2017 - 01/2023] |
| Forward recognition camera | Refer to REMOVAL [11/2017 - 01/2023] | |
| Combination meter assembly | Refer to REMOVAL [09/2014 - ] | |
| Driving support ECU assembly | Refer to REMOVAL [09/2014 - 01/2023] | |
| "Front Camera Unavailable Remove Debris On Windshield" is displayed | Foreign matter attached to forward recognition camera or area of windshield in front of forward recognition camera | - |
| Forward recognition camera | Refer to REMOVAL [11/2017 - 01/2023] | |
| Combination meter assembly | Refer to REMOVAL [09/2014 - ] | |
| Driving support ECU assembly | Refer to REMOVAL [09/2014 - 01/2023] | |
| Although there is possibility of collision, pre-collision controls (all controls) do not operate ("Pre-collision System Unavailable" is not displayed) | Check if pre-collision system is canceled | - |
| Vehicle condition/environment does not match the pre-collision system operation conditions (Confirm control operation conditions). | Refer to SYSTEM DESCRIPTION [11/2017 - 01/2023] | |
| Check installation condition of millimeter wave radar sensor assembly | Refer to INSTALLATION [11/2017 - 01/2023] | |
| Perform millimeter wave radar sensor assembly adjustment | Refer to ADJUSTMENT [11/2017 - 03/2019] , or refer to ADJUSTMENT [03/2019 - 01/2023] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [11/2017 - 01/2023] | |
| Check installation condition of forward recognition camera | Refer to INSTALLATION [11/2017 - 01/2023] | |
| Perform forward recognition camera adjustment | Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [11/2017 - 01/2023] | |
| Forward recognition camera | Refer to REMOVAL [11/2017 - 01/2023] | |
| Driving support ECU assembly | Refer to REMOVAL [09/2014 - 01/2023] | |
| Although there is no possibility of collision, pre-collision controls (all controls) operate | Vehicle condition/environment does not match the pre-collision system operation conditions (Confirm control operation conditions). | Refer to SYSTEM DESCRIPTION [11/2017 - 01/2023] |
| Check installation condition of millimeter wave radar sensor assembly | Refer to INSTALLATION [11/2017 - 01/2023] | |
| Perform millimeter wave radar sensor assembly adjustment | Refer to ADJUSTMENT [11/2017 - 03/2019] , or refer to ADJUSTMENT [03/2019 - 01/2023] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [11/2017 - 01/2023] | |
| Check installation condition of forward recognition camera | Refer to INSTALLATION [11/2017 - 01/2023] | |
| Perform forward recognition camera adjustment | Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [11/2017 - 01/2023] | |
| Forward recognition camera | Refer to REMOVAL [11/2017 - 01/2023] | |
| Driving support ECU assembly | Refer to REMOVAL [09/2014 - 01/2023] | |
| Pre-collision system does not operate | Check if pre-collision system is canceled | - |
| ECU power source circuit | Refer to ECU Power Source Circuit [11/2017 - 01/2023] | |
| Driving support ECU assembly | Refer to REMOVAL [09/2014 - 01/2023] | |
| Pre-collision system cannot be canceled (PCS warning light does not illuminate) | Combination meter assembly (check if indicator illuminates using Active Test) | Refer to DATA LIST / ACTIVE TEST [11/2017 - 03/2019] , or refer to DATA LIST / ACTIVE TEST [03/2019 - 01/2023] |
| Driving support ECU assembly | Refer to REMOVAL [09/2014 - 01/2023] | |
| Combination meter assembly | Refer to REMOVAL [09/2014 - ] |
- *: If "Pre-Collision System Unavailable." is displayed on the multi-information display and there is front beam axis misalignment (vertical) history, the millimeter wave radar sensor assembly may be performing beam axis alignment correction. In this case, the message will disappear when the millimeter wave radar sensor assembly front beam axis adjustment has completed.
"Pre-Collision System Unavailable." disappears when the millimeter wave radar sensor assembly beam axis alignment correction has completed.
Make sure to delete the beam axis misalignment history when the millimeter wave radar sensor assembly beam axis alignment correction has completed.
Refer to UTILITY [11/2017 - 01/2023]