Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VJSY |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 - 11/2017] |
Title: PRE-COLLISION: PRE-COLLISION SYSTEM: U0122,U0123,U0126,U0140,U0151,U1100; Lost Communication with Vehicle Dynamics Control Module; 2016 - 2017 MY Sienna [12/2015 - 11/2017] |
DTC
|
U0122
|
Lost Communication with Vehicle Dynamics Control Module
|
DTC
|
U0123
|
Lost Communication with Yaw Rate Sensor Module
|
DTC
|
U0126
|
Lost Communication with Steering Angle Sensor Module
|
DTC
|
U0140
|
Lost Communication with Main Body ECU
|
DTC
|
U0151
|
Lost Communication with Airbag ECU
|
DTC
|
U1100
|
Lost Communication with Seat Belt Control ECU
|
DESCRIPTION
-
The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle. Based on this information, the driving support ECU sends pre-collision control operation signals. These DTCs are stored when a communication malfunction occurs between the sensors and ECUs that detect collisions, or between ECUs that perform the pre-collision control.
DTC No.
|
DTC Detection Condition
|
Trouble Area
|
U0122
|
-
When the ignition switch is ON, a communication error between the skid control ECU and the driving support ECU is detected for approximately. 5 seconds.
-
When the ignition switch is ON, a communication error between the skid control ECU assembly and the seat belt control ECU is detected for approximately. 3 seconds.
|
-
Brake actuator (skid control ECU)
-
CAN communication system
-
Seat belt control ECU
-
Driving support ECU
|
U0123
|
When the ignition switch is ON, a communication error between the yaw rate sensor and the driving support ECU is detected for approximately. 1 second.
|
-
Yaw rate sensor
-
CAN communication system
-
Driving support ECU
|
U0126
|
When the ignition switch is ON, a communication error between the steering sensor and the driving support ECU is detected for approximately. 1 second.
|
-
Steering angle sensor
-
CAN communication system
-
Driving support ECU
|
U0140
|
While ignition switch is ON, communication stop between main body ECU and seat belt control ECU continues for 6 seconds or more.
|
-
Main body ECU
-
CAN communication system
-
Seat belt control ECU
|
U0151
|
While ignition switch is ON, communication stop between center airbag sensor and seat belt control ECU continues for 6 seconds or more.
|
-
Center airbag sensor assembly
-
CAN communication system
-
Seat belt control ECU
|
U1100
|
When the ignition switch is ON, a communication error between the seat belt control ECU and the driving support ECU is detected for approximately. 9 seconds.
|
-
Seat belt control ECU
-
CAN communication system
-
Driving support ECU
|
CAUTION / NOTICE / HINT
NOTICE:
-
Inspect the fuses for circuits related to this system between performing the following inspection procedure.
-
Confirm that the connector is securely connected, as a partially connected connector is suspected for the cause of this DTC.
PROCEDURE
1.
|
CHECK FOR DTCs (PRE-COLLISION 2)
|
(a) Clear the DTCs (See page
).
(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check the DTCs (See page
).
Result
Result
|
Proceed to
|
CAN communication system DTCs are not output
|
A
|
CAN communication system DTCs are output
|
B
|
A |
|
USE SIMULATION METHOD TO CHECK
|
B |
|
GO TO CAN COMMUNICATION SYSTEM
(See page
)
|
|