Problem Symptoms Table [06/2015 - 11/2018]
NOTE:
- When replacing the combination meter assembly, make sure to replace it with a new one.
- When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.
- When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.
Refer to ADJUSTMENT [06/2015 - 11/2018]
- Inspect the fuses for circuits related to this system before performing the following procedure.
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.
PRE-COLLISION SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| "Pre-collision System Malfunction Visit Your Dealer" is displayed | Driving support ECU assembly | Refer to REMOVAL [06/2015 - 11/2018] |
| Combination meter assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| "Pre-collision System Unavailable" is displayed | System determines that obstacles cannot be detected due to millimeter wave radar sensor assembly or radiator grille being dirty. If dirt is removed, normal control returns (dirt history can be checked using Data List). | - |
| System determines that millimeter wave radar sensor assembly cannot detect obstacles due to bad weather. If weather recovers, normal control returns (bad weather history can be checked using Data List). | - | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| Combination meter assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| Driving support ECU assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| Although there is possibility of collision, pre-crash safety control (all front collision controls) does not operate ("Pre-collision System Unavailable" is not displayed) | Vehicle condition/environment does not match pre-collision system operation conditions (Confirm control operation conditions) | Refer to SYSTEM DESCRIPTION [06/2015 - 11/2018] |
| Pre-collision system circuit | Refer to Pre-collision System Circuit [06/2015 - 11/2018] | |
| Check installation condition of millimeter wave radar sensor assembly | Refer to INSTALLATION [06/2015 - 11/2018] | |
| Perform millimeter wave radar sensor assembly adjustment | Refer to ADJUSTMENT [06/2015 - 11/2018] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| Driving support ECU assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| Although there is no possibility of collision, pre-collision system controls (all front crash controls) operate | Vehicle condition/environment match pre-collision system control operation conditions (Confirm control operation conditions) | Refer to SYSTEM DESCRIPTION [06/2015 - 11/2018] |
| pre-collision system circuit | Refer to Pre-collision System Circuit [06/2015 - 11/2018] | |
| Check installation condition of millimeter wave radar sensor assembly | Refer to INSTALLATION [06/2015 - 11/2018] | |
| Perform millimeter wave radar sensor assembly adjustment | Refer to ADJUSTMENT [06/2015 - 11/2018] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| Driving support ECU assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| Pre-collision system cannot be canceled (PCS warning indicator does not illuminate) | Check condition of pre-collision system cancel switch assembly | Refer to SYSTEM DESCRIPTION [06/2015 - 11/2018] |
| Combination meter assembly (Check if indicator illuminates using Active Test) | Refer to DATA LIST / ACTIVE TEST [06/2015 - 11/2018] | |
| Pre-collision system switch circuit | Refer to Pre-collision System Switch Circuit [06/2015 - 11/2018] | |
| Driving support ECU assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| Pre-collision system brake assist and pre-crash brake control cannot be canceled (PCS warning indicator does not illuminate) | Check condition of integration control and panel assembly (VSC OFF switch) | Refer to SYSTEM DESCRIPTION [06/2015 - 11/2018] |
| Combination meter assembly (Check if indicator illuminates using Active Test) | Refer to DATA LIST / ACTIVE TEST [06/2015 - 11/2018] | |
| Electronically controlled brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - ] | |
| Driving support ECU assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| Pre-collision system sensitivity cannot be changed (multi-information display sensitivity setting screen does not display) | Check condition of pre-collision system cancel switch assembly | Refer to SYSTEM DESCRIPTION [06/2015 - 11/2018] |
| Pre-collision system switch circuit | Refer to Pre-collision System Switch Circuit [06/2015 - 11/2018] | |
| Combination meter assembly | Refer to REMOVAL [06/2015 - 11/2018] | |
| Driving support ECU assembly | Refer to REMOVAL [06/2015 - 11/2018] |