Last Modified: 08-21-2023 |
6.11:8.1.0 |
Doc ID: RM100000001AZ9B |
Model Year Start: 2019 |
Model: Avalon |
Prod Date Range: [04/2018 - 08/2021] |
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): U0073,U0100,U0123,U0126,U0142,U0151; Control Module Communication Bus Off; 2019 - 2021 MY Avalon [04/2018 - 08/2021] |
DTC
|
U0073
|
Control Module Communication Bus Off
|
DTC
|
U0100
|
Lost Communication With ECM/PCM "A"
|
DTC
|
U0123
|
Lost Communication With Yaw Rate Sensor Module
|
DTC
|
U0126
|
Lost Communication With Steering Angle Sensor Module
|
DTC
|
U0142
|
Lost Communication with Body Control Module "B"
|
DTC
|
U0151
|
Lost Communication With Restraints Control Module
|
DESCRIPTION
The skid control ECU (brake actuator assembly) receives signals from the ECM, steering angle sensor, yaw rate and acceleration sensor (airbag sensor assembly), airbag sensor assembly and main body ECU (multiplex network body ECU) via CAN communication.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
U0073
|
Control Module Communication Bus Off
|
The +BS terminal voltage is between 9.6 and a 16.5 V and a bus OFF state occurs for 0.1 seconds or more.
|
CAN communication system
|
U0100
|
Lost Communication With ECM/PCM "A"
|
The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals cannot be sent to the ECM for 2 seconds or more.
|
-
CAN communication system
-
Skid control ECU (brake actuator assembly)
-
ECM
|
U0123
|
Lost Communication With Yaw Rate Sensor Module
|
The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals from the yaw rate and acceleration sensor cannot be received for 1 second or more.
|
-
CAN communication system
-
Skid control ECU (brake actuator assembly)
-
Yaw rate and acceleration sensor (airbag sensor assembly)
|
U0126
|
Lost Communication With Steering Angle Sensor Module
|
The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals from the steering angle sensor cannot be received for 1 second or more.
|
-
CAN communication system
-
Skid control ECU (brake actuator assembly)
-
Steering angle sensor
|
U0142
|
Lost Communication with Body Control Module "B"
|
The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, data cannot be received from main body ECU (multiplex network body ECU) continuously for 2 seconds or more.
|
-
CAN communication system
-
Skid control ECU (brake actuator assembly)
-
Main body ECU (multiplex network body ECU)
|
U0151
|
Lost Communication With Restraints Control Module
|
The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals from the airbag sensor assembly cannot be received for 5 seconds or more.
|
-
CAN communication system
-
Skid control ECU (brake actuator assembly)
-
Airbag sensor assembly
|
PROCEDURE
1.
|
CHECK DTC OUTPUT (HEALTH CHECK)
|
(a) Clear the DTCs.
Chassis > ABS/VSC/TRAC/EPB > Clear DTCs
(b) Turn the engine switch off.
(c) Turn the engine switch on (IG).
(d) Enter the following menus: System Select / Health Check.
(e) Check for DTCs.
Result
|
Proceed to
|
DTCs for related systems are output together with DTC U0073, U0100, U0123, U0126, U0142 or U0151.
|
A
|
U0073, U0100, U0123, U0126, U0142 or U0151 is output
|
B
|
DTCs are not output
|
C
|
A |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART (RELATED SYSTEM)
|
|