Problem Symptoms Table [11/2014 - ]
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.
PRE-COLLISION SYSTEM
| Symptom | Suspected Area | Reference |
|---|---|---|
| System does not operate normally even when DTCs are not output | Pre-collision system cancel switch circuit | Refer to Pre-collision System Cancel Switch Circuit [11/2014 - ] |
| Only pre-collision brake operation is not performed | Pre-collision system cancel switch circuit | Refer to Pre-collision System Cancel Switch Circuit [11/2014 - ] |
| Driving support ECU assembly | Refer to REMOVAL [11/2014 - ] | |
| Skid control ECU | Refer to REMOVAL [11/2014 - ] | |
| Although there is no possibility of collision, pre-collision controls (all front collision controls) operate | Proceed to "Cases of Unnecessary Pre-collision System Operation" (Although there is no possibility of collision, the millimeter wave radar sensor detects an object and activates the pre-collision system) | Refer to SYSTEM DESCRIPTION [11/2014 - ] |
| Check installation condition of millimeter wave radar sensor | Refer to INSTALLATION [11/2014 - ] | |
| Perform millimeter wave radar sensor adjustment | Refer to ADJUSTMENT [11/2014 - ] | |
| Millimeter wave radar sensor | Refer to REMOVAL [11/2014 - ] | |
| Driving support ECU assembly | Refer to REMOVAL [11/2014 - ] | |
| Although there is possibility of collision, pre-collision controls (all front collision controls) do not operate | Pre-collision system cancel switch circuit | Refer to Pre-collision System Cancel Switch Circuit [11/2014 - ] |
| Vehicle condition/environment does not match pre-collision control operation conditions (Confirm control operation conditions) | Refer to SYSTEM DESCRIPTION [11/2014 - ] | |
| Check installation condition of millimeter wave radar sensor | Refer to INSTALLATION [11/2014 - ] | |
| Perform millimeter wave radar sensor adjustment | Refer to ADJUSTMENT [11/2014 - ] | |
| Millimeter wave radar sensor | Refer to REMOVAL [11/2014 - ] | |
| Driving support ECU assembly | Refer to REMOVAL [11/2014 - ] | |
| Pre-collision system OFF (pre-collision brake) does not operate | LED (perform Active test) | Refer to DATA LIST/ACTIVE TEST [11/2014 - ] |
| Pre-collision system cancel switch circuit | Refer to Pre-collision System Cancel Switch Circuit [11/2014 - ] | |
| Combination meter sub-assembly | Refer to DISASSEMBLY [11/2014 - ] | |
| Skid control ECU | Refer to REMOVAL [11/2014 - ] | |
| Pre-collision system cannot be canceled (PCS warning light does not illuminate) | Combination meter sub-assembly (Check if indicator illuminates using Active Test) | Refer to DATA LIST/ACTIVE TEST [11/2014 - ] |
| Pre-collision system cancel switch circuit | Refer to Pre-collision System Cancel Switch Circuit [11/2014 - ] | |
| Driving support ECU assembly | Refer to REMOVAL [11/2014 - ] | |
| Pre-collision brake assist and pre-collision brake control cannot be canceled (PCS warning indicator does not illuminate) | Combination meter sub-assembly (Check if indicator illuminates using Active Test) | Refer to DATA LIST/ACTIVE TEST [11/2014 - ] |
| VSC OFF switch circuit | Refer to VSC OFF Switch Circuit [11/2014 - ] | |
| Driving support ECU assembly | Refer to REMOVAL [11/2014 - ] | |
| Pre-collision sensitivity switching function cannot be operated (Pre-collision system sensitivity indicator is not displayed) | Pre-collision system cancel switch circuit | Refer to Pre-collision System Cancel Switch Circuit [11/2014 - ] |
| Combination meter sub-assembly | Refer to DISASSEMBLY [11/2014 - ] | |
| Driving support ECU assembly | Refer to REMOVAL [11/2014 - ] |