| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018YB2 |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: PRE-COLLISION: PRE-COLLISION SYSTEM: PROBLEM SYMPTOMS TABLE; 2018 - 2020 MY Sienna [11/2017 - ] | ||
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.
- The pre-collision system uses the CAN communication system. First, confirm that there are no malfunctions 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 |
Perform millimeter wave radar sensor assembly adjustment |
|
|
Millimeter wave radar sensor assembly temperature malfunction |
|
|
|
Millimeter wave radar sensor assembly low voltage malfunction |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Combination meter assembly |
|
|
|
Driving support ECU assembly |
|
|
|
"Pre-Collision System Unavailable Clean Sensor" is displayed |
Foreign matter attached to millimeter wave radar sensor assembly |
- |
|
Millimeter wave radar sensor assembly |
|
|
|
Combination meter assembly |
|
|
|
Driving support ECU assembly |
|
|
|
"Front Camera Unavailable" is displayed |
Check current condition of forward recognition camera based on related Data List items.
|
|
|
Forward recognition camera |
|
|
|
Combination meter assembly |
|
|
|
Driving support ECU assembly |
|
|
|
"Front Camera System Unavailable Clean Windshield" is displayed |
Foreign matter attached to forward recognition camera or area of windshield in front of forward recognition camera |
- |
|
Forward recognition camera |
|
|
|
Combination meter assembly |
|
|
|
Driving support ECU assembly |
|
|
|
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). |
|
|
|
Check installation condition of millimeter wave radar sensor assembly |
|
|
|
Perform millimeter wave radar sensor assembly adjustment |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Check installation condition of forward recognition camera |
|
|
|
Perform forward recognition camera adjustment |
|
|
|
Forward recognition camera |
|
|
|
Driving support ECU assembly |
|
|
|
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). |
|
|
Check installation condition of millimeter wave radar sensor assembly |
|
|
|
Perform millimeter wave radar sensor assembly adjustment |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Check installation condition of forward recognition camera |
|
|
|
Perform forward recognition camera adjustment |
|
|
|
Forward recognition camera |
|
|
|
Driving support ECU assembly |
|
|
|
Pre-collision system does not operate |
Check if pre-collision system is canceled |
- |
|
ECU power source circuit |
|
|
|
Driving support ECU assembly |
|
|
|
Pre-collision system cannot be canceled (PCS warning light does not illuminate) |
Combination meter assembly (check if indicator illuminates using Active Test) |
|
|
Driving support ECU assembly |
|
|
|
Combination meter assembly |
|
![2018 - 2020 MY Sienna [11/2017 - ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT](/t3Portal/stylegraphics/info.gif)
|
|