- Main body ECU
- Blind spot monitor sensor RH
- Blind spot monitor sensor LH
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000001983Q |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: U1331; Software Incompatibility with Body Control Module "B"; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
DTC |
U1331 |
Software Incompatibility with Body Control Module "B" |
DESCRIPTION
This DTC is stored when the destination information of the main body ECU does not match that of the blind spot monitor sensors.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
U1331 |
Destination information of the main body ECU and blind spot monitor sensor do not match. |
|
CAUTION / NOTICE / HINT
NOTICE:
When checking for DTCs, make sure that the blind spot monitor system is on.
PROCEDURE
|
1. |
CONFIRM PART NUMBER (MAIN BODY ECU) |
(a) Check the main body ECU part number.
(1) Check if the part number of the main body ECU installed on the vehicle is correct.
OK:
The parts number is correct.
| NG |
|
|
|
2. |
CHECK DTC |
(a) Clear the DTCs (See page
![2018 - 2020 MY Sienna [11/2017 - ]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
).
(b) Recheck for DTCs and check if the same DTC is output again.
Result
|
Result |
Proceed to |
|---|---|
|
No DTC is output |
A |
|
DTC is output from the blind spot monitor sensor RH (Master) |
B |
|
DTC is output from the blind spot monitor sensor LH (Slave) |
C |
| A |
|
| B |
|
| C |
|
|
|